112 lines
5.2 KiB
Makefile
112 lines
5.2 KiB
Makefile
#!/usr/bin/make
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#^^^^ help emacs select makefile mode
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#
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# This is a sub-make for building a standalone wasmfs-based
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# sqlite3.wasm. It is intended to be "include"d from the main
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# GNUMakefile.
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########################################################################
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MAKEFILE.wasmfs := $(lastword $(MAKEFILE_LIST))
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# ensure that the following message starts on line 10 or higher for proper
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# $(warning) alignment!
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ifneq (1,$(MAKING_CLEAN))
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$(warning !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!)
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$(warning !! The WASMFS build is not well-supported. WASMFS is a proverbial)
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$(warning !! moving target, sometimes changing in incompatible ways between)
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$(warning !! Emscripten versions. This build is provided for adventurous folks)
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$(warning !! and is not a supported deliverable of the SQLite project.)
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$(warning !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!)
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endif
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sqlite3-wasmfs.js := $(dir.wasmfs)/sqlite3-wasmfs.js
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sqlite3-wasmfs.wasm := $(dir.wasmfs)/sqlite3-wasmfs.wasm
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########################################################################
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# emcc flags for .c/.o.
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cflags.sqlite3-wasmfs :=
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cflags.sqlite3-wasmfs += -std=c99 -fPIC
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cflags.sqlite3-wasmfs += -pthread
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cflags.sqlite3-wasmfs += -DSQLITE_ENABLE_WASMFS
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########################################################################
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# emcc flags specific to building the final .js/.wasm file...
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emcc.flags.sqlite3-wasmfs :=
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emcc.flags.sqlite3-wasmfs += \
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-sEXPORTED_RUNTIME_METHODS=wasmMemory
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# wasmMemory ==> for -sIMPORTED_MEMORY
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# Some version of emcc between 3.1.60-ish(?) and 3.1.62 deprecated the
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# use of (allocateUTF8OnStack,stringToUTF8OnStack). Earlier emcc
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# versions will fail to build without those in the
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# EXPORTED_RUNTIME_METHODS list.
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emcc.flags.sqlite3-wasmfs += -sUSE_CLOSURE_COMPILER=0
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emcc.flags.sqlite3-wasmfs += -Wno-limited-postlink-optimizations
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# ^^^^^ emcc likes to warn when we have "limited optimizations" via the -g3 flag.
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emcc.flags.sqlite3-wasmfs += -sMEMORY64=0
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emcc.flags.sqlite3-wasmfs += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128)
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# ^^^^ 64MB is not enough for WASMFS/OPFS test runs using batch-runner.js
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sqlite3-wasmfs.fsflags := -pthread -sWASMFS \
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-sPTHREAD_POOL_SIZE=1 \
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-sERROR_ON_UNDEFINED_SYMBOLS=0 -sLLD_REPORT_UNDEFINED
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# ^^^^^ why undefined symbols are necessary for the wasmfs build is anyone's guess.
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emcc.flags.sqlite3-wasmfs += $(sqlite3-wasmfs.fsflags)
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emcc.flags.sqlite3-wasmfs += -sALLOW_MEMORY_GROWTH=0
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#^^^ using ALLOW_MEMORY_GROWTH produces a warning from emcc:
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# USE_PTHREADS + ALLOW_MEMORY_GROWTH may run non-wasm code slowly,
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# see https://github.com/WebAssembly/design/issues/1271 [-Wpthreads-mem-growth]
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# And, indeed, it runs slowly if memory is permitted to grow.
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#emcc.flags.sqlite3-wasmfs.vanilla :=
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#emcc.flags.sqlite3-wasmfs.esm := -sEXPORT_ES6 -sUSE_ES6_IMPORT_META
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all: $(sqlite3-wasmfs.mjs)
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$(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(MAKEFILE.wasmfs)
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########################################################################
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# Build quirk: we cannot build BOTH .js and .mjs with our current
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# build infrastructure because the supplemental *.worker.js files get
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# generated with the name of the main module file
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# ($(sqlite3-wasmfs.{js,mjs})) hard-coded in them. Thus the last one
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# to get built gets the *.worker.js files mapped to it. In order to
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# build both modes they would need to have distinct base names or
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# output directories. "The problem" with giving them distinct base
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# names is that it means that the corresponding .wasm file is also
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# built/saved multiple times. It is likely that anyone wanting to use
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# WASMFS will want an ES6 module, so that's what we build here.
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wasmfs.build.ext := mjs
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$(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(SOAP.js.bld)
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ifeq (js,$(wasmfs.build.ext))
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$(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.js)
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wasmfs: $(sqlite3-wasmfs.js)
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else
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$(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.mjs)
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wasmfs: $(sqlite3-wasmfs.mjs)
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endif
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########################################################################
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# speedtest1 for wasmfs.
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speedtest1-wasmfs.mjs := $(dir.wasmfs)/speedtest1-wasmfs.mjs
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speedtest1-wasmfs.wasm := $(subst .mjs,.wasm,$(speedtest1-wasmfs.mjs))
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emcc.flags.speedtest1-wasmfs := $(sqlite3-wasmfs.fsflags)
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emcc.flags.speedtest1-wasmfs += $(SQLITE_OPT)
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emcc.flags.speedtest1-wasmfs += -sALLOW_MEMORY_GROWTH=0
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emcc.flags.speedtest1-wasmfs += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128)
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#$(eval $(call call-make-pre-js,speedtest1-wasmfs,ems))
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$(speedtest1-wasmfs.mjs): $(speedtest1.cfiles) $(sqlite3-wasmfs.js) \
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$(MAKEFILE) $(MAKEFILE.wasmfs) \
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$(pre-post-sqlite3-wasmfs-esm.deps) \
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$(EXPORTED_FUNCTIONS.speedtest1)
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@echo "Building $@ ..."
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$(emcc.bin) \
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$(pre-post-sqlite3-wasmfs-esm.flags) \
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$(cflags.common) \
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$(cflags.sqlite3-wasmfs) \
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$(emcc.speedtest1.common) \
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$(emcc.flags.speedtest1-vanilla) \
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$(emcc.flags.sqlite3-wasmfs) \
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$(emcc.flags.speedtest1-wasmfs) \
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-o $@ $(speedtest1.cfiles) -lm
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@$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,1,1)
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$(maybe-wasm-strip) $(speedtest1-wasmfs.wasm)
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chmod -x $(speedtest1-wasmfs.wasm)
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ls -la $@ $(speedtest1-wasmfs.wasm)
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wasmfs: $(speedtest1-wasmfs.mjs)
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# end speedtest1.js
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########################################################################
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