889 lines
37 KiB
Makefile
889 lines
37 KiB
Makefile
#######################################################################
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# This GNU makefile drives the build of the sqlite3 WASM
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# components. It is not part of the canonical build process.
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#
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# This build assumes a Linux platform and is not intended for
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# general-purpose client-level use, except for creating builds with
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# custom configurations. It is primarily intended for the sqlite
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# project's own development of the JS/WASM components.
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#
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# Primary targets:
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#
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# default, all = build in dev mode
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#
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# o0, o1, o2, o3, os, oz = full clean/rebuild with the -Ox level indicated
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# by the target name. Rebuild is necessary for all components to get
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# the desired optimization level.
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#
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# quick, q = do just a minimal build (sqlite3.js/wasm, tester1) for
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# faster development-mode turnaround.
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#
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# qo2, qoz = a combination of quick+o2/oz.
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#
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# dist = create end user deliverables. Add dist.build=oX to build
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# with a specific optimization level, where oX is one of the
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# above-listed o? or qo? target names.
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#
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# snapshot = like dist, but uses a zip file name which clearly
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# marks it as a prerelease/snapshot build.
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#
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# clean = clean up
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#
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# Required tools beyond those needed for the canonical builds:
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#
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# - Emscripten SDK: https://emscripten.org/docs/getting_started/downloads.html
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# - The bash shell
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# - GNU make, GNU sed, GNU awk, GNU grep (all in the $PATH)
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# - wasm-strip for release builds: https://github.com/WebAssembly/wabt
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# - InfoZip for 'dist' zip file
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########################################################################
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SHELL := $(shell which bash 2>/dev/null)
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MAKEFILE := $(lastword $(MAKEFILE_LIST))
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CLEAN_FILES :=
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DISTCLEAN_FILES := ./--dummy--
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default: all
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release: oz
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# Emscripten SDK home dir and related binaries...
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EMSDK_HOME ?= $(word 1,$(wildcard $(HOME)/emsdk $(HOME)/src/emsdk))
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emcc.bin ?= $(word 1,$(wildcard $(EMSDK_HOME)/upstream/emscripten/emcc) $(shell which emcc))
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ifeq (,$(emcc.bin))
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$(error Cannot find emcc.)
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endif
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wasm-strip ?= $(shell which wasm-strip 2>/dev/null)
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ifeq (,$(filter clean,$(MAKECMDGOALS)))
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ifeq (,$(wasm-strip))
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$(info WARNING: *******************************************************************)
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$(info WARNING: builds using -O2/-O3/-Os/-Oz will minify WASM-exported names,)
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$(info WARNING: breaking _All The Things_. The workaround for that is to build)
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$(info WARNING: with -g3 (which explodes the file size) and then strip the debug)
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$(info WARNING: info after compilation, using wasm-strip, to shrink the wasm file.)
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$(info WARNING: wasm-strip was not found in the PATH so we cannot strip those.)
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$(info WARNING: If this build uses any optimization level higher than -O1 then)
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$(info WARNING: the ***resulting JS code WILL NOT BE USABLE***.)
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$(info WARNING: wasm-strip is part of the wabt package:)
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$(info WARNING: https://github.com/WebAssembly/wabt)
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$(info WARNING: on Ubuntu-like systems it can be installed with:)
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$(info WARNING: sudo apt install wabt)
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$(info WARNING: *******************************************************************)
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endif
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endif # 'make clean' check
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ifeq (,$(wasm-strip))
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maybe-wasm-strip = echo "not wasm-stripping"
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else
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maybe-wasm-strip = $(wasm-strip)
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endif
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dir.top := ../..
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# Reminder: some Emscripten flags require absolute paths but we want
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# relative paths for most stuff simply to reduce noise. The
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# $(abspath...) GNU make function can transform relative paths to
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# absolute.
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dir.wasm := $(patsubst %/,%,$(dir $(MAKEFILE)))
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dir.api := api
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dir.jacc := jaccwabyt
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dir.common := common
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dir.fiddle := fiddle
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dir.tool := $(dir.top)/tool
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CLEAN_FILES += *~ $(dir.jacc)/*~ $(dir.api)/*~ $(dir.common)/*~ $(dir.fiddle)/*~
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########################################################################
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# dir.dout = output dir for deliverables.
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#
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# MAINTENANCE REMINDER: the output .js and .wasm files of certain emcc
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# buildables must be in _this_ dir, rather than a subdir, or else
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# parts of the generated code get confused and cannot load
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# property. Specifically, when X.js loads X.wasm, whether or not X.js
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# uses the correct path for X.wasm depends on how it's loaded: an HTML
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# script tag will resolve it intuitively, whereas a Worker's call to
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# importScripts() will not. That's a fundamental incompatibility with
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# how URL resolution in JS happens between those two contexts. See:
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#
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# https://zzz.buzz/2017/03/14/relative-uris-in-web-development/
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#
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# We unfortunately have no way, from Worker-initiated code, to
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# automatically resolve the path from X.js to X.wasm.
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#
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# We have an "only slightly unsightly" solution for our main builds
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# but it does not work for the WASMFS builds, so those builds have to
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# be built to _this_ directory and can only run when the client app is
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# loaded from the same directory.
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dir.dout := $(dir.wasm)/jswasm
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# dir.tmp = output dir for intermediary build files, as opposed to
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# end-user deliverables.
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dir.tmp := $(dir.wasm)/bld
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CLEAN_FILES += $(dir.tmp)/* $(dir.dout)/*
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ifeq (,$(wildcard $(dir.dout)))
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dir._tmp := $(shell mkdir -p $(dir.dout))
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endif
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ifeq (,$(wildcard $(dir.tmp)))
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dir._tmp := $(shell mkdir -p $(dir.tmp))
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endif
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sqlite3.c := $(dir.top)/sqlite3.c
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sqlite3.h := $(dir.top)/sqlite3.h
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# Most SQLITE_OPT flags are set in sqlite3-wasm.c but we need them
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# made explicit here for building speedtest1.c.
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SQLITE_OPT = \
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-DSQLITE_ENABLE_FTS5 \
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-DSQLITE_ENABLE_RTREE \
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-DSQLITE_ENABLE_EXPLAIN_COMMENTS \
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-DSQLITE_ENABLE_UNKNOWN_SQL_FUNCTION \
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-DSQLITE_ENABLE_STMTVTAB \
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-DSQLITE_ENABLE_DBPAGE_VTAB \
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-DSQLITE_ENABLE_DBSTAT_VTAB \
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-DSQLITE_ENABLE_BYTECODE_VTAB \
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-DSQLITE_ENABLE_OFFSET_SQL_FUNC \
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-DSQLITE_OMIT_LOAD_EXTENSION \
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-DSQLITE_OMIT_DEPRECATED \
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-DSQLITE_OMIT_UTF16 \
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-DSQLITE_OMIT_SHARED_CACHE \
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-DSQLITE_OMIT_WAL \
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-DSQLITE_THREADSAFE=0 \
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-DSQLITE_TEMP_STORE=3 \
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-DSQLITE_OS_KV_OPTIONAL=1 \
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'-DSQLITE_DEFAULT_UNIX_VFS="unix-none"' \
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-DSQLITE_USE_URI=1 \
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-DSQLITE_WASM_ENABLE_C_TESTS
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$(sqlite3.c) $(sqlite3.h):
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$(MAKE) -C $(dir.top) sqlite3.c
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.PHONY: clean distclean
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clean:
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-rm -f $(CLEAN_FILES)
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distclean: clean
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-rm -f $(DISTCLEAN_FILES)
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ifeq (release,$(filter release,$(MAKECMDGOALS)))
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ifeq (,$(wasm-strip))
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$(error Cannot make release-quality binary because wasm-strip is not available. \
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See notes in the warning above)
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endif
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else
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$(info Development build. Use '$(MAKE) release' for a smaller release build.)
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endif
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# bin.version-info = binary to output various sqlite3 version info for
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# embedding in the JS files and in building the distribution zip file.
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# It must NOT be in $(dir.tmp) because we need it to survive the
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# cleanup process for the dist build to work properly.
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bin.version-info := $(dir.wasm)/version-info
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$(bin.version-info): $(dir.wasm)/version-info.c $(sqlite3.h) $(MAKEFILE)
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$(CC) -O0 -I$(dir.top) -o $@ $<
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DISTCLEAN_FILES += $(bin.version-info)
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# bin.stripcomments is used for stripping C/C++-style comments from JS
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# files. The JS files contain large chunks of documentation which we
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# don't need for all builds. That app's -k flag is of particular
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# importance here, as it allows us to retain the opening comment
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# blocks, which contain the license header and version info.
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bin.stripccomments := $(dir.tool)/stripccomments
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$(bin.stripccomments): $(bin.stripccomments).c $(MAKEFILE)
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$(CC) -o $@ $<
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DISTCLEAN_FILES += $(bin.stripccomments)
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########################################################################
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# C-PP.FILTER: a $(call)able to transform $(1) to $(2) via ./c-pp -f
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# $(1) ...
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#
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# Historical notes:
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#
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# - We first attempted to use gcc and/or clang to preprocess JS files
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# in the same way we would normally do C files, but C-specific quirks
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# of each makes that untennable.
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#
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# - We implemented c-pp.c (the C-Minus Pre-processor) as a custom
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# generic/file-format-agnostic preprocessor to enable us to pack
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# code for different target builds into the same JS files. Most
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# notably, some ES6 module (a.k.a. ESM) features cannot legally be
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# referenced at all in non-ESM code, e.g. the "import" and "export"
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# keywords. This preprocessing step permits us to swap out sections
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# of code where necessary for ESM and non-ESM (a.k.a. vanilla JS)
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# require different implementations. The alternative to such
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# preprocessing, would be to have separate source files for ES6
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# builds, which would have a higher maintenance burden than c-pp.c
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# seems likely to.
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#
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# c-pp.c was written specifically for the sqlite project's JavaScript
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# builds but is maintained as a standalone project:
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# https://fossil.wanderinghorse.net/r/c-pp
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bin.c-pp := ./c-pp
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$(bin.c-pp): c-pp.c $(sqlite3.c) $(MAKEFILE)
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$(CC) -O0 -o $@ c-pp.c $(sqlite3.c) '-DCMPP_DEFAULT_DELIM="//#"' -I$(dir.top) \
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-DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_DEPRECATED -DSQLITE_OMIT_UTF16 \
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-DSQLITE_OMIT_SHARED_CACHE -DSQLITE_OMIT_WAL -DSQLITE_THREADSAFE=0 \
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-DSQLITE_TEMP_STORE=3
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define C-PP.FILTER
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# Create $2 from $1 using $(bin.c-pp)
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# $1 = Input file: c-pp -f $(1).js
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# $2 = Output file: c-pp -o $(2).js
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# $3 = optional c-pp -D... flags
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$(2): $(1) $$(MAKEFILE) $$(bin.c-pp)
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$$(bin.c-pp) -f $(1) -o $$@ $(3)
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CLEAN_FILES += $(2)
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endef
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c-pp.D.vanilla ?=
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c-pp.D.esm ?= -Dtarget=es6-module
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# /end C-PP.FILTER
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########################################################################
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# cflags.common = C compiler flags for all builds
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cflags.common := -I. -I.. -I$(dir.top)
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# emcc.WASM_BIGINT = 1 for BigInt (C int64) support, else 0. The API
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# disables certain features if BigInt is not enabled and such builds
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# _are not tested_ on any regular basis.
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emcc.WASM_BIGINT ?= 1
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# emcc_opt = optimization-related flags. These are primarily used by
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# the various oX targets. build times for -O levels higher than 0 are
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# painful at dev-time.
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emcc_opt ?= -O0
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# When passing emcc_opt from the CLI, += and re-assignment have no
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# effect, so emcc_opt+=-g3 doesn't work. So...
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emcc_opt_full := $(emcc_opt) -g3
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# ^^^ ALWAYS use -g3. See below for why.
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#
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# ^^^ -flto improves runtime speed at -O0 considerably but doubles
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# build time.
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#
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# ^^^^ -O3, -Oz, -Os minify symbol names and there appears to be no
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# way around that except to use -g3, but -g3 causes the binary file
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# size to absolutely explode (approx. 5x larger). This minification
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# utterly breaks the resulting module, making it unsable except as
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# self-contained/self-referential-only code, as ALL of the exported
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# symbols get minified names.
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#
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# However, we have an option for using -Oz or -Os:
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#
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# Build with (-Os -g3) or (-Oz -g3) then use wasm-strip, from the wabt
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# tools package (https://github.com/WebAssembly/wabt), to strip the
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# debugging symbols. That results in a small build with unmangled
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# symbol names. -Oz gives ever-so-slightly better compression than
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# -Os: not quite 1% in some completely unscientific tests. Runtime
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# speed for the unit tests is all over the place either way so it's
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# difficult to say whether -Os gives any speed benefit over -Oz.
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#
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# Much practice has demonstrated that -O2 consistently gives the best
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# runtime speeds, but not by a large enough factor to rule out use of
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# -Oz when small deliverable size is a priority.
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########################################################################
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# EXPORTED_FUNCTIONS.* = files for use with Emscripten's
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# -sEXPORTED_FUNCTION flag.
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EXPORTED_FUNCTIONS.api.in := $(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-api)
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EXPORTED_FUNCTIONS.api := $(dir.tmp)/EXPORTED_FUNCTIONS.api
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$(EXPORTED_FUNCTIONS.api): $(EXPORTED_FUNCTIONS.api.in) $(MAKEFILE)
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cp $(EXPORTED_FUNCTIONS.api.in) $@
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# sqlite3-license-version.js = generated JS file with the license
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# header and version info.
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sqlite3-license-version.js := $(dir.tmp)/sqlite3-license-version.js
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# sqlite3-license-version-header.js = JS file containing only the
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# license header.
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sqlite3-license-version-header.js := $(dir.api)/sqlite3-license-version-header.js
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# sqlite3-api-build-version.js = generated JS file which populates the
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# sqlite3.version object using $(bin.version-info).
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sqlite3-api-build-version.js := $(dir.tmp)/sqlite3-api-build-version.js
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# sqlite3-api.jses = the list of JS files which make up
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# $(sqlite3-api.js.in), in the order they need to be assembled.
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sqlite3-api.jses := $(sqlite3-license-version.js)
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sqlite3-api.jses += $(dir.api)/sqlite3-api-prologue.js
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sqlite3-api.jses += $(dir.common)/whwasmutil.js
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sqlite3-api.jses += $(dir.jacc)/jaccwabyt.js
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sqlite3-api.jses += $(dir.api)/sqlite3-api-glue.js
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sqlite3-api.jses += $(sqlite3-api-build-version.js)
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sqlite3-api.jses += $(dir.api)/sqlite3-api-oo1.js
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sqlite3-api.jses += $(dir.api)/sqlite3-api-worker1.js
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sqlite3-api.jses += $(dir.api)/sqlite3-v-helper.js
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sqlite3-api.jses += $(dir.api)/sqlite3-vfs-opfs.c-pp.js
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sqlite3-api.jses += $(dir.api)/sqlite3-api-cleanup.js
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# "External" API files which are part of our distribution
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# but not part of the sqlite3-api.js amalgamation.
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SOAP.js := $(dir.api)/sqlite3-opfs-async-proxy.js
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sqlite3-worker1.js := $(dir.api)/sqlite3-worker1.js
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sqlite3-worker1-promiser.js := $(dir.api)/sqlite3-worker1-promiser.js
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# COPY_XAPI = a $(call)able function to copy $1 to $(dir.dout), where
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# $1 must be one of the "external" JS API files.
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define COPY_XAPI
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sqlite3-api.ext.jses += $$(dir.dout)/$$(notdir $(1))
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$$(dir.dout)/$$(notdir $(1)): $(1) $$(MAKEFILE)
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cp $$< $$@
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endef
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$(foreach X,$(SOAP.js) $(sqlite3-worker1.js) $(sqlite3-worker1-promiser.js),\
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$(eval $(call COPY_XAPI,$(X))))
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all quick: $(sqlite3-api.ext.jses)
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q: quick
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# sqlite3-api.js.in = the generated sqlite3-api.js before it gets
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# preprocessed. It contains all of $(sqlite3-api.jses) but none of the
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# Emscripten-specific headers and footers.
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sqlite3-api.js.in := $(dir.tmp)/sqlite3-api.c-pp.js
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$(sqlite3-api.js.in): $(sqlite3-api.jses) $(MAKEFILE)
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@echo "Making $@..."
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@for i in $(sqlite3-api.jses); do \
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echo "/* BEGIN FILE: $$i */"; \
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cat $$i; \
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echo "/* END FILE: $$i */"; \
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done > $@
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$(sqlite3-api-build-version.js): $(bin.version-info) $(MAKEFILE)
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@echo "Making $@..."
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@{ \
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echo 'self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){'; \
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echo -n ' sqlite3.version = '; \
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$(bin.version-info) --json; \
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echo ';'; \
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echo '});'; \
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} > $@
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$(sqlite3-license-version.js): $(sqlite3.h) $(sqlite3-license-version-header.js) \
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$(MAKEFILE)
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@echo "Making $@..."; { \
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cat $(sqlite3-license-version-header.js); \
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echo '/*'; \
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echo '** This code was built from sqlite3 version...'; \
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echo "** "; \
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awk -e '/define SQLITE_VERSION/{$$1=""; print "**" $$0}' \
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-e '/define SQLITE_SOURCE_ID/{$$1=""; print "**" $$0}' $(sqlite3.h); \
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echo '*/'; \
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} > $@
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########################################################################
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# --post-js and --pre-js are emcc flags we use to append/prepend JS to
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# the generated emscripten module file. The following rules generate
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# various versions of those files for the vanilla and ESM builds.
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pre-js.js.in := $(dir.api)/pre-js.c-pp.js
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pre-js.js.esm := $(dir.tmp)/pre-js.esm.js
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pre-js.js.vanilla := $(dir.tmp)/pre-js.vanilla.js
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$(eval $(call C-PP.FILTER,$(pre-js.js.in),$(pre-js.js.vanilla),$(c-pp.D.vanilla)))
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$(eval $(call C-PP.FILTER,$(pre-js.js.in),$(pre-js.js.esm),$(c-pp.D.esm)))
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post-js.js.in := $(dir.tmp)/post-js.c-pp.js
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post-js.js.vanilla := $(dir.tmp)/post-js.vanilla.js
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post-js.js.esm := $(dir.tmp)/post-js.esm.js
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post-jses.js := \
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$(dir.api)/post-js-header.js \
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$(sqlite3-api.js.in) \
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$(dir.api)/post-js-footer.js
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$(post-js.js.in): $(post-jses.js) $(MAKEFILE)
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@echo "Making $@..."
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@for i in $(post-jses.js); do \
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echo "/* BEGIN FILE: $$i */"; \
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cat $$i; \
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echo "/* END FILE: $$i */"; \
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done > $@
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$(eval $(call C-PP.FILTER,$(post-js.js.in),$(post-js.js.vanilla),$(c-pp.D.vanilla)))
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$(eval $(call C-PP.FILTER,$(post-js.js.in),$(post-js.js.esm),$(c-pp.D.esm)))
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# extern-post-js* and extern-pre-js* are files for use with
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# Emscripten's --extern-pre-js and --extern-post-js flags. These
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# rules make different copies for the vanilla and ESM builds.
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extern-post-js.js.in := $(dir.api)/extern-post-js.c-pp.js
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extern-post-js.js.vanilla := $(dir.tmp)/extern-post-js.vanilla.js
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extern-post-js.js.esm := $(dir.tmp)/extern-post-js.esm.js
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$(eval $(call C-PP.FILTER,$(extern-post-js.js.in),$(extern-post-js.js.vanilla),$(c-pp.D.vanilla)))
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$(eval $(call C-PP.FILTER,$(extern-post-js.js.in),$(extern-post-js.js.esm),$(c-pp.D.esm)))
|
|
extern-pre-js.js := $(dir.api)/extern-pre-js.js
|
|
|
|
# Emscripten flags for --[extern-][pre|post]-js=... for the
|
|
# various builds.
|
|
pre-post-common.flags := \
|
|
--extern-pre-js=$(sqlite3-license-version.js)
|
|
pre-post-common.flags.vanilla := \
|
|
$(pre-post-common.flags) \
|
|
--post-js=$(post-js.js.vanilla) \
|
|
--extern-post-js=$(extern-post-js.js.vanilla)
|
|
pre-post-common.flags.esm := \
|
|
$(pre-post-common.flags) \
|
|
--post-js=$(post-js.js.esm) \
|
|
--extern-post-js=$(extern-post-js.js.esm)
|
|
|
|
# pre-post-jses.deps.* = a list of dependencies for the
|
|
# --[extern-][pre/post]-js files.
|
|
pre-post-jses.deps.common := $(extern-pre-js.js) $(sqlite3-license-version.js)
|
|
pre-post-jses.deps.vanilla := $(pre-post-jses.deps.common) \
|
|
$(post-js.js.vanilla) $(extern-post-js.js.vanilla)
|
|
pre-post-jses.deps.esm := $(pre-post-jses.deps.common) \
|
|
$(post-js.js.esm) $(extern-post-js.js.esm)
|
|
|
|
########################################################################
|
|
# call-make-pre-js is a $(call)able which creates rules for
|
|
# pre-js-$(1).js. $1 = the base name of the JS file on whose behalf
|
|
# this pre-js is for. $2 is the build mode: one of (vanilla, esm).
|
|
# This sets up --[extern-][pre/post]-js flags in
|
|
# $(pre-post-$(1).flags.$(2)) and dependencies in
|
|
# $(pre-post-$(1).deps.$(2)).
|
|
define call-make-pre-js
|
|
pre-post-$(1).flags.$(2) ?=
|
|
$$(dir.tmp)/pre-js-$(1)-$(2).js: $$(pre-js.js.$(2)) $$(MAKEFILE)
|
|
cp $$(pre-js.js.$(2)) $$@
|
|
@if [ sqlite3-wasmfs = $(1) ]; then \
|
|
echo "delete Module[xNameOfInstantiateWasm] /*for WASMFS build*/;"; \
|
|
elif [ sqlite3 != $(1) ]; then \
|
|
echo "Module[xNameOfInstantiateWasm].uri = '$(1).wasm';"; \
|
|
fi >> $$@
|
|
pre-post-$(1).deps.$(2) := \
|
|
$$(pre-post-jses.deps.$(2)) \
|
|
$$(dir.tmp)/pre-js-$(1)-$(2).js
|
|
pre-post-$(1).flags.$(2) += \
|
|
$$(pre-post-common.flags.$(2)) \
|
|
--pre-js=$$(dir.tmp)/pre-js-$(1)-$(2).js
|
|
endef
|
|
# /post-js and pre-js
|
|
########################################################################
|
|
|
|
########################################################################
|
|
# emcc flags for .c/.o/.wasm/.js.
|
|
emcc.flags :=
|
|
ifeq (1,$(emcc.verbose))
|
|
emcc.flags += -v
|
|
# -v is _very_ loud but also informative about what it's doing
|
|
endif
|
|
|
|
########################################################################
|
|
# emcc flags for .c/.o.
|
|
emcc.cflags :=
|
|
emcc.cflags += -std=c99 -fPIC
|
|
# -------------^^^^^^^^ we need c99 for $(sqlite3-wasm.c).
|
|
emcc.cflags += -I. -I$(dir.top)
|
|
|
|
########################################################################
|
|
# emcc flags specific to building .js/.wasm files...
|
|
emcc.jsflags := -fPIC
|
|
emcc.jsflags += --minify 0
|
|
emcc.jsflags += --no-entry
|
|
emcc.jsflags += -sWASM_BIGINT=$(emcc.WASM_BIGINT)
|
|
emcc.jsflags += -sMODULARIZE
|
|
emcc.jsflags += -sSTRICT_JS
|
|
emcc.jsflags += -sDYNAMIC_EXECUTION=0
|
|
emcc.jsflags += -sNO_POLYFILL
|
|
emcc.jsflags += -sEXPORTED_FUNCTIONS=@$(EXPORTED_FUNCTIONS.api)
|
|
emcc.exportedRuntimeMethods := \
|
|
-sEXPORTED_RUNTIME_METHODS=wasmMemory
|
|
# wasmMemory ==> required by our code for use with -sIMPORTED_MEMORY
|
|
emcc.jsflags += $(emcc.exportedRuntimeMethods)
|
|
emcc.jsflags += -sUSE_CLOSURE_COMPILER=0
|
|
emcc.jsflags += -sIMPORTED_MEMORY
|
|
emcc.environment := -sENVIRONMENT=web,worker
|
|
########################################################################
|
|
# -sINITIAL_MEMORY: How much memory we need to start with is governed
|
|
# at least in part by whether -sALLOW_MEMORY_GROWTH is enabled. If so,
|
|
# we can start with less. If not, we need as much as we'll ever
|
|
# possibly use (which, of course, we can't know for sure). Note,
|
|
# however, that speedtest1 shows that performance for even moderate
|
|
# workloads MAY suffer considerably if we start small and have to grow
|
|
# at runtime. e.g. OPFS-backed (speedtest1 --size 75) take MAY take X
|
|
# time with 16mb+ memory and 3X time when starting with 8MB. However,
|
|
# such test results are inconsistent due to browser internals which
|
|
# are opaque to us.
|
|
emcc.jsflags += -sALLOW_MEMORY_GROWTH
|
|
emcc.INITIAL_MEMORY.128 := 13107200
|
|
emcc.INITIAL_MEMORY.96 := 100663296
|
|
emcc.INITIAL_MEMORY.64 := 64225280
|
|
emcc.INITIAL_MEMORY.32 := 33554432
|
|
emcc.INITIAL_MEMORY.16 := 16777216
|
|
emcc.INITIAL_MEMORY.8 := 8388608
|
|
emcc.INITIAL_MEMORY ?= 16
|
|
ifeq (,$(emcc.INITIAL_MEMORY.$(emcc.INITIAL_MEMORY)))
|
|
$(error emcc.INITIAL_MEMORY must be one of: 8, 16, 32, 64, 96, 128 (megabytes))
|
|
endif
|
|
emcc.jsflags += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.$(emcc.INITIAL_MEMORY))
|
|
# /INITIAL_MEMORY
|
|
########################################################################
|
|
|
|
emcc.jsflags += $(emcc.environment)
|
|
emcc.jsflags += -sSTACK_SIZE=512KB
|
|
# ^^^ ACHTUNG: emsdk 3.1.27 reduced the default stack size from 5MB to
|
|
# a mere 64KB, which leads to silent memory corruption via the kvvfs
|
|
# VFS, which requires twice that for its xRead() and xWrite() methods.
|
|
########################################################################
|
|
# $(sqlite3.js.init-func) is the name Emscripten assigns our exported
|
|
# module init/load function. This symbol name is hard-coded in
|
|
# $(extern-post-js.js) as well as in numerous docs.
|
|
#
|
|
# "sqlite3InitModule" is the symbol we document for client use, so
|
|
# that's the symbol name which must be exported, whether it comes from
|
|
# Emscripten or our own code in extern-post-js.js.
|
|
#
|
|
# That said... we can change $(sqlite3.js.init-func) as long as the
|
|
# name "sqlite3InitModule" is the one which gets exposed via the
|
|
# resulting JS files. That can be accomplished via
|
|
# extern-post-js.js. However... using a temporary symbol name here
|
|
# and then adding sqlite3InitModule() ourselves results in 2 global
|
|
# symbols: we cannot "delete" the Emscripten-defined
|
|
# $(sqlite3.js.init-func) because it's declared with "var".
|
|
sqlite3.js.init-func := sqlite3InitModule
|
|
emcc.jsflags += -sEXPORT_NAME=$(sqlite3.js.init-func)
|
|
emcc.jsflags += -sGLOBAL_BASE=4096 # HYPOTHETICALLY keep func table indexes from overlapping w/ heap addr.
|
|
#emcc.jsflags += -sSTRICT # fails due to missing __syscall_...()
|
|
#emcc.jsflags += -sALLOW_UNIMPLEMENTED_SYSCALLS
|
|
#emcc.jsflags += -sFILESYSTEM=0 # only for experimentation. sqlite3 needs the FS API
|
|
#emcc.jsflags += -sABORTING_MALLOC # only for experimentation
|
|
emcc.jsflags += -sALLOW_TABLE_GROWTH
|
|
# ^^^^ -sALLOW_TABLE_GROWTH is required for installing new SQL UDFs
|
|
emcc.jsflags += -Wno-limited-postlink-optimizations
|
|
# ^^^^ emcc likes to warn when we have "limited optimizations" via the
|
|
# -g3 flag.
|
|
# emcc.jsflags += -sSTANDALONE_WASM # causes OOM errors, not sure why.
|
|
|
|
# Re. undefined symbol handling, see: https://lld.llvm.org/WebAssembly.html
|
|
emcc.jsflags += -sERROR_ON_UNDEFINED_SYMBOLS=1
|
|
emcc.jsflags += -sLLD_REPORT_UNDEFINED
|
|
#emcc.jsflags += --allow-undefined
|
|
#emcc.jsflags += --import-undefined
|
|
#emcc.jsflags += --unresolved-symbols=import-dynamic --experimental-pic
|
|
#emcc.jsflags += --experimental-pic --unresolved-symbols=ingore-all --import-undefined
|
|
#emcc.jsflags += --unresolved-symbols=ignore-all
|
|
|
|
########################################################################
|
|
# -sMEMORY64=1 fails to load, erroring with:
|
|
# invalid memory limits flags 0x5
|
|
# (enable via --experimental-wasm-memory64)
|
|
#
|
|
# ^^^^ MEMORY64=2 builds and loads but dies when we do things like:
|
|
#
|
|
# new Uint8Array(wasm.heap8u().buffer, ptr, n)
|
|
#
|
|
# because ptr is now a BigInt, so is invalid for passing to arguments
|
|
# which have strict must-be-a-Number requirements. That aspect will
|
|
# make any eventual port to 64-bit address space extremely painful, as
|
|
# such constructs are found all over the place in the source code.
|
|
########################################################################
|
|
|
|
|
|
########################################################################
|
|
# -sSINGLE_FILE:
|
|
# https://github.com/emscripten-core/emscripten/blob/main/src/settings.js
|
|
#
|
|
# -sSINGLE_FILE=1 would be _really_ nice but we have to build with -g3
|
|
# for -O2 and higher to work (else minification breaks the code) and
|
|
# cannot wasm-strip the binary before it gets encoded into the JS
|
|
# file. The result is that the generated JS file is, because of the
|
|
# -g3 debugging info, _huge_.
|
|
########################################################################
|
|
|
|
sqlite3.js := $(dir.dout)/sqlite3.js
|
|
sqlite3.mjs := $(dir.dout)/sqlite3.mjs
|
|
# Undocumented Emscripten feature: if the target file extension is
|
|
# "mjs", it defaults to ES6 module builds:
|
|
# https://github.com/emscripten-core/emscripten/issues/14383
|
|
sqlite3.wasm := $(dir.dout)/sqlite3.wasm
|
|
sqlite3-wasm.c := $(dir.api)/sqlite3-wasm.c
|
|
# sqlite3-wasm.o vs sqlite3-wasm.c: building against the latter
|
|
# (predictably) results in a slightly faster binary, but we're close
|
|
# enough to the target speed requirements that the 500ms makes a
|
|
# difference. Thus we build all binaries against sqlite3-wasm.c
|
|
# instead of building a shared copy of sqlite3-wasm.o.
|
|
$(eval $(call call-make-pre-js,sqlite3,vanilla))
|
|
$(eval $(call call-make-pre-js,sqlite3,esm))
|
|
$(sqlite3.js) $(sqlite3.mjs): $(MAKEFILE) $(sqlite3-wasm.c) \
|
|
$(EXPORTED_FUNCTIONS.api)
|
|
$(sqlite3.js): $(pre-post-sqlite3.deps.vanilla)
|
|
$(sqlite3.mjs): $(pre-post-sqlite3.deps.esm)
|
|
########################################################################
|
|
# SQLITE3.xJS.RECIPE = the $(call)able recipe body for $(sqlite3.js)
|
|
# and $(sqlite3.mjs). $1 = one of (vanilla, esm).
|
|
#
|
|
# Reminder for ESM builds: even if we use -sEXPORT_ES6=0, emcc _still_
|
|
# adds:
|
|
#
|
|
# export default $(sqlite3.js.init-func);
|
|
#
|
|
# when building *.mjs, which is bad because we need to export an
|
|
# overwritten version of that function and cannot "export default"
|
|
# twice. Because of this, we have to sed $(sqlite3.mjs) to remove the
|
|
# _first_ instance (only) of /^export default/.
|
|
#
|
|
# Upstream RFE:
|
|
# https://github.com/emscripten-core/emscripten/issues/18237
|
|
########################################################################
|
|
# SQLITE3.xJS.EXPORT-DEFAULT is part of SQLITE3[-WASMFS].xJS.RECIPE,
|
|
# factored into a separate piece to avoid code duplication. $1 is
|
|
# the build mode: one of (vanilla, esm).
|
|
define SQLITE3.xJS.ESM-EXPORT-DEFAULT
|
|
if [ esm = $(1) ]; then \
|
|
echo "Fragile workaround for an Emscripten annoyance. See SQLITE3.xJS.RECIPE."; \
|
|
sed -i -e '0,/^export default/{/^export default/d;}' $@ || exit $$?; \
|
|
if ! grep -q '^export default' $@; then \
|
|
echo "Cannot find export default." 1>&2; \
|
|
exit 1; \
|
|
fi; \
|
|
fi
|
|
endef
|
|
define SQLITE3.xJS.RECIPE
|
|
@echo "Building $@ ..."
|
|
$(emcc.bin) -o $@ $(emcc_opt_full) $(emcc.flags) \
|
|
$(emcc.jsflags) \
|
|
$(pre-post-sqlite3.flags.$(1)) $(emcc.flags.sqlite3.$(1)) \
|
|
$(cflags.common) $(SQLITE_OPT) $(sqlite3-wasm.c)
|
|
@$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,$(1))
|
|
chmod -x $(sqlite3.wasm)
|
|
$(maybe-wasm-strip) $(sqlite3.wasm)
|
|
@ls -la $@ $(sqlite3.wasm)
|
|
endef
|
|
emcc.flags.sqlite3.vanilla :=
|
|
emcc.flags.sqlite3.esm := -sEXPORT_ES6 -sUSE_ES6_IMPORT_META
|
|
$(sqlite3.js):
|
|
$(call SQLITE3.xJS.RECIPE,vanilla)
|
|
$(sqlite3.mjs):
|
|
$(call SQLITE3.xJS.RECIPE,esm)
|
|
########################################################################
|
|
# We have to ensure that we do not build both $(sqlite3.js) and
|
|
# $(sqlite3.mjs) in parallel because both result in the creation of
|
|
# $(sqlite3.wasm). We have no(?) way to build just the .mjs file
|
|
# without also building the .wasm file. i.e. we're building
|
|
# $(sqlite3.wasm) twice, but that's apparently unavoidable (and
|
|
# harmless, just a waste of build time).
|
|
$(sqlite3.wasm): $(sqlite3.js)
|
|
$(sqlite3.mjs): $(sqlite3.js)
|
|
CLEAN_FILES += $(sqlite3.js) $(sqlite3.mjs) $(sqlite3.wasm)
|
|
all: $(sqlite3.js) $(sqlite3.mjs)
|
|
quick: $(sqlite3.js)
|
|
quick: $(sqlite3.mjs) # for the sake of the snapshot build
|
|
# End main $(sqlite3.js) build
|
|
########################################################################
|
|
|
|
########################################################################
|
|
# batch-runner.js is part of one of the test apps which reads in SQL
|
|
# dumps generated by $(speedtest1) and executes them.
|
|
dir.sql := sql
|
|
speedtest1 := ../../speedtest1
|
|
speedtest1.c := ../../test/speedtest1.c
|
|
speedtest1.sql := $(dir.sql)/speedtest1.sql
|
|
speedtest1.cliflags := --size 25 --big-transactions
|
|
$(speedtest1):
|
|
$(MAKE) -C ../.. speedtest1
|
|
$(speedtest1.sql): $(speedtest1) $(MAKEFILE)
|
|
$(speedtest1) $(speedtest1.cliflags) --script $@
|
|
batch-runner.list: $(MAKEFILE) $(speedtest1.sql) $(dir.sql)/000-mandelbrot.sql
|
|
bash split-speedtest1-script.sh $(dir.sql)/speedtest1.sql
|
|
ls -1 $(dir.sql)/*.sql | grep -v speedtest1.sql | sort > $@
|
|
clean-batch:
|
|
rm -f batch-runner.list $(dir.sql)/speedtest1*.sql
|
|
# ^^^ we don't do this along with 'clean' because we clean/rebuild on
|
|
# a regular basis with different -Ox flags and rebuilding the batch
|
|
# pieces each time is an unnecessary time sink.
|
|
batch: batch-runner.list
|
|
all: batch
|
|
# end batch-runner.js
|
|
########################################################################
|
|
# Wasmified speedtest1 is our primary benchmarking tool.
|
|
#
|
|
# emcc.speedtest1.common = emcc flags used by multiple builds of speedtest1
|
|
# emcc.speedtest1 = emcc flags used by main build of speedtest1
|
|
emcc.speedtest1.common := $(emcc_opt_full)
|
|
emcc.speedtest1 :=
|
|
emcc.speedtest1 += -sENVIRONMENT=web
|
|
emcc.speedtest1 += -sALLOW_MEMORY_GROWTH
|
|
emcc.speedtest1 += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.$(emcc.INITIAL_MEMORY))
|
|
emcc.speedtest1.common += -sINVOKE_RUN=0
|
|
emcc.speedtest1.common += --no-entry
|
|
#emcc.speedtest1.common += -flto
|
|
emcc.speedtest1.common += -sABORTING_MALLOC
|
|
emcc.speedtest1.common += -sSTRICT_JS
|
|
emcc.speedtest1.common += -sMODULARIZE
|
|
emcc.speedtest1.common += -Wno-limited-postlink-optimizations
|
|
EXPORTED_FUNCTIONS.speedtest1 := $(abspath $(dir.tmp)/EXPORTED_FUNCTIONS.speedtest1)
|
|
emcc.speedtest1.common += -sSTACK_SIZE=512KB
|
|
emcc.speedtest1.common += -sEXPORTED_FUNCTIONS=@$(EXPORTED_FUNCTIONS.speedtest1)
|
|
emcc.speedtest1.common += $(emcc.exportedRuntimeMethods)
|
|
emcc.speedtest1.common += -sALLOW_TABLE_GROWTH
|
|
emcc.speedtest1.common += -sDYNAMIC_EXECUTION=0
|
|
emcc.speedtest1.common += --minify 0
|
|
emcc.speedtest1.common += -sEXPORT_NAME=$(sqlite3.js.init-func)
|
|
emcc.speedtest1.common += -sWASM_BIGINT=$(emcc.WASM_BIGINT)
|
|
speedtest1.exit-runtime0 := -sEXIT_RUNTIME=0
|
|
speedtest1.exit-runtime1 := -sEXIT_RUNTIME=1
|
|
# Re -sEXIT_RUNTIME=1 vs 0: if it's 1 and speedtest1 crashes, we get
|
|
# this error from emscripten:
|
|
#
|
|
# > native function `free` called after runtime exit (use
|
|
# NO_EXIT_RUNTIME to keep it alive after main() exits))
|
|
#
|
|
# If it's 0 and it crashes, we get:
|
|
#
|
|
# > stdio streams had content in them that was not flushed. you should
|
|
# set EXIT_RUNTIME to 1 (see the FAQ), or make sure to emit a newline
|
|
# when you printf etc.
|
|
#
|
|
# and pending output is not flushed because it didn't end with a
|
|
# newline (by design). The lesser of the two evils seems to be
|
|
# -sEXIT_RUNTIME=1 but we need EXIT_RUNTIME=0 for the worker-based app
|
|
# which runs speedtest1 multiple times.
|
|
|
|
$(EXPORTED_FUNCTIONS.speedtest1): $(EXPORTED_FUNCTIONS.api)
|
|
@echo "Making $@ ..."
|
|
@{ echo _wasm_main; cat $(EXPORTED_FUNCTIONS.api); } > $@
|
|
speedtest1.js := $(dir.dout)/speedtest1.js
|
|
speedtest1.wasm := $(dir.dout)/speedtest1.wasm
|
|
cflags.speedtest1 := $(cflags.common) -DSQLITE_SPEEDTEST1_WASM
|
|
speedtest1.cses := $(speedtest1.c) $(sqlite3-wasm.c)
|
|
$(eval $(call call-make-pre-js,speedtest1,vanilla))
|
|
$(speedtest1.js): $(MAKEFILE) $(speedtest1.cses) \
|
|
$(pre-post-speedtest1.deps.vanilla) \
|
|
$(EXPORTED_FUNCTIONS.speedtest1)
|
|
@echo "Building $@ ..."
|
|
$(emcc.bin) \
|
|
$(emcc.speedtest1) $(emcc.speedtest1.common) \
|
|
$(cflags.speedtest1) $(pre-post-speedtest1.flags.vanilla) \
|
|
$(SQLITE_OPT) \
|
|
$(speedtest1.exit-runtime0) \
|
|
-o $@ $(speedtest1.cses) -lm
|
|
$(maybe-wasm-strip) $(speedtest1.wasm)
|
|
ls -la $@ $(speedtest1.wasm)
|
|
|
|
speedtest1: $(speedtest1.js)
|
|
all: speedtest1
|
|
CLEAN_FILES += $(speedtest1.js) $(speedtest1.wasm)
|
|
# end speedtest1.js
|
|
########################################################################
|
|
|
|
########################################################################
|
|
# tester1 is the main unit and regression test application and needs
|
|
# to be able to run in 4 separate modes to cover the primary
|
|
# client-side use cases:
|
|
#
|
|
# 1) Load sqlite3 in the main UI thread of a conventional script.
|
|
# 2) Load sqlite3 in a conventional Worker thread.
|
|
# 3) Load sqlite3 as an ES6 module (ESM) in the main thread.
|
|
# 4) Load sqlite3 as an ESM worker. (Not all browsers support this.)
|
|
#
|
|
# To that end, we require two separate builds of tester1.js:
|
|
#
|
|
# tester1.js: cases 1 and 2
|
|
# tester1.mjs: cases 3 and 4
|
|
#
|
|
# To create those, we filter tester1.c-pp.js with $(bin.c-pp)...
|
|
$(eval $(call C-PP.FILTER,tester1.c-pp.js,tester1.js))
|
|
$(eval $(call C-PP.FILTER,tester1.c-pp.js,tester1.mjs,$(c-pp.D.esm)))
|
|
$(eval $(call C-PP.FILTER,tester1.c-pp.html,tester1.html))
|
|
$(eval $(call C-PP.FILTER,tester1.c-pp.html,tester1-esm.html,$(c-pp.D.esm)))
|
|
tester1: tester1.js tester1.mjs tester1.html tester1-esm.html
|
|
all quick: tester1
|
|
|
|
########################################################################
|
|
# Convenience rules to rebuild with various -Ox levels. Much
|
|
# experimentation shows -O2 to be the clear winner in terms of speed.
|
|
# Note that build times with anything higher than -O0 are somewhat
|
|
# painful.
|
|
|
|
.PHONY: o0 o1 o2 o3 os oz
|
|
o-xtra :=
|
|
#o-xtra ?= -flto
|
|
# ^^^^ -flto can have a considerably performance boost at -O0 but
|
|
# doubles the build time and seems to have negligible, if any, effect
|
|
# on higher optimization levels.
|
|
o0: clean
|
|
$(MAKE) -e "emcc_opt=-O0"
|
|
o1: clean
|
|
$(MAKE) -e "emcc_opt=-O1 $(o-xtra)"
|
|
o2: clean
|
|
$(MAKE) -j2 -e "emcc_opt=-O2 $(o-xtra)"
|
|
qo2: clean
|
|
$(MAKE) -j2 -e "emcc_opt=-O2 $(o-xtra)" quick
|
|
o3: clean
|
|
$(MAKE) -e "emcc_opt=-O3 $(o-xtra)"
|
|
os: clean
|
|
@echo "WARNING: -Os can result in a build with mysteriously missing pieces!"
|
|
$(MAKE) -e "emcc_opt=-Os $(o-xtra)"
|
|
oz: clean
|
|
$(MAKE) -j2 -e "emcc_opt=-Oz $(o-xtra)"
|
|
qoz: clean
|
|
$(MAKE) -j2 -e "emcc_opt=-Oz $(o-xtra)" quick
|
|
|
|
########################################################################
|
|
# Sub-makes...
|
|
|
|
# sqlite.org/fiddle application...
|
|
include fiddle.make
|
|
|
|
# Only add wasmfs if wasmfs.enable=1 or we're running (dist)clean
|
|
ifneq (,$(filter wasmfs,$(MAKECMDGOALS)))
|
|
wasmfs.enable ?= 1
|
|
else
|
|
wasmfs.enable ?= $(if $(filter %clean,$(MAKECMDGOALS)),1,0)
|
|
endif
|
|
ifeq (1,$(wasmfs.enable))
|
|
# wasmfs build disabled 2022-10-19 per /chat discussion.
|
|
# OPFS-over-wasmfs was initially a stopgap measure and a convenient
|
|
# point of comparison for the OPFS sqlite3_vfs's performance, but it
|
|
# currently doubles our deliverables and build maintenance burden for
|
|
# little benefit.
|
|
#
|
|
########################################################################
|
|
# Some platforms do not support the WASMFS build. Raspberry Pi OS is one
|
|
# of them. As such platforms are discovered, add their (uname -m) name
|
|
# to PLATFORMS_WITH_NO_WASMFS to exclude the wasmfs build parts.
|
|
PLATFORMS_WITH_NO_WASMFS := aarch64 # add any others here
|
|
THIS_ARCH := $(shell /usr/bin/uname -m)
|
|
ifneq (,$(filter $(THIS_ARCH),$(PLATFORMS_WITH_NO_WASMFS)))
|
|
$(info This platform does not support the WASMFS build.)
|
|
HAVE_WASMFS := 0
|
|
else
|
|
HAVE_WASMFS := 1
|
|
include wasmfs.make
|
|
endif
|
|
endif
|
|
# /wasmfs
|
|
########################################################################
|
|
|
|
########################################################################
|
|
# Push files to public wasm-testing.sqlite.org server
|
|
wasm-testing.include = *.js *.mjs *.html \
|
|
./tests \
|
|
batch-runner.list \
|
|
$(dir.dout) $(dir.sql) $(dir.common) $(dir.fiddle) $(dir.jacc)
|
|
wasm-testing.exclude = sql/speedtest1.sql
|
|
wasm-testing.dir = /jail/sites/wasm-testing
|
|
wasm-testing.dest ?= wasm-testing:$(wasm-testing.dir)
|
|
# ---------------------^^^^^^^^^^^^ ssh alias
|
|
.PHONY: push-testing
|
|
push-testing:
|
|
rsync -z -e ssh --ignore-times --chown=stephan:www-data --group -r \
|
|
$(patsubst %,--exclude=%,$(wasm-testing.exclude)) \
|
|
$(wasm-testing.include) $(wasm-testing.dest)
|
|
@echo "Updating gzipped copies..."; \
|
|
ssh wasm-testing 'cd $(wasm-testing.dir) && bash .gzip' || \
|
|
echo "SSH failed: it's likely that stale content will be served via old gzip files."
|
|
|
|
########################################################################
|
|
# If we find a copy of the sqlite.org/wasm docs checked out, copy
|
|
# certain files over to it, noting that some need automatable edits...
|
|
wasm.docs.home ?= ../../../wasm
|
|
wasm.docs.found = $(if $(wildcard $(wasm.docs.home)/api-index.md),\
|
|
$(wildcard $(wasm.docs.home)),)
|
|
.PHONY: update-docs
|
|
ifeq (,$(wasm.docs.found))
|
|
update-docs:
|
|
@echo "Cannot find wasm docs checkout."; \
|
|
echo "Pass wasm.docs.home=/path/to/wasm/docs/checkout or edit this makefile to suit."; \
|
|
exit 127
|
|
else
|
|
wasm.docs.jswasm := $(wasm.docs.home)/jswasm
|
|
update-docs: $(bin.stripccomments) $(sqlite3.js) $(sqlite3.wasm)
|
|
@echo "Copying files to the /wasm docs. Be sure to use an -Oz build for this!"
|
|
cp $(sqlite3.wasm) $(wasm.docs.jswasm)/.
|
|
$(bin.stripccomments) -k -k < $(sqlite3.js) \
|
|
| sed -e '/^[ \t]*$$/d' > $(wasm.docs.jswasm)/sqlite3.js
|
|
cp demo-123.js demo-123.html demo-123-worker.html $(wasm.docs.home)
|
|
sed -n -e '/EXTRACT_BEGIN/,/EXTRACT_END/p' \
|
|
module-symbols.html > $(wasm.docs.home)/module-symbols.html
|
|
endif
|
|
# end /wasm docs
|
|
########################################################################
|
|
|
|
########################################################################
|
|
# Create main client downloadable zip file:
|
|
ifneq (,$(filter dist snapshot,$(MAKECMDGOALS)))
|
|
include dist.make
|
|
endif
|
|
|
|
# Run local web server for the test/demo pages.
|
|
httpd:
|
|
althttpd -max-age 1 -enable-sab -page index.html
|