133 lines
6.2 KiB
Makefile
133 lines
6.2 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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# Maintenance reminder: these particular files cannot be built into a
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# subdirectory because loading of the auxiliary
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# sqlite3-wasmfs.worker.js file it creates fails if sqlite3-wasmfs.js
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# is loaded from any directory other than the one in which the
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# containing HTML lives. Similarly, they cannot be loaded from a
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# Worker to an Emscripten quirk regarding loading nested Workers.
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dir.wasmfs := $(dir.wasm)
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sqlite3-wasmfs.js := $(dir.wasmfs)/sqlite3-wasmfs.js
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sqlite3-wasmfs.mjs := $(dir.wasmfs)/sqlite3-wasmfs.mjs
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sqlite3-wasmfs.wasm := $(dir.wasmfs)/sqlite3-wasmfs.wasm
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CLEAN_FILES += $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.wasm) \
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$(subst .js,.worker.js,$(sqlite3-wasmfs.js)) \
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$(sqlite3-wasmfs.mjs) \
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$(subst .mjs,.worker.mjs,$(sqlite3-wasmfs.mjs))
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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 += $(cflags.speedtest1)
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cflags.sqlite3-wasmfs += $(SQLITE_OPT) -DSQLITE_ENABLE_WASMFS
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########################################################################
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# emcc flags specific to building the final .js/.wasm file...
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emcc.flags.sqlite3-wasmfs := -fPIC
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emcc.flags.sqlite3-wasmfs += --no-entry
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emcc.flags.sqlite3-wasmfs += --minify 0
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emcc.flags.sqlite3-wasmfs += -sMODULARIZE
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emcc.flags.sqlite3-wasmfs += -sEXPORT_NAME=$(sqlite3.js.init-func)
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emcc.flags.sqlite3-wasmfs += -sSTRICT_JS
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emcc.flags.sqlite3-wasmfs += -sDYNAMIC_EXECUTION=0
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emcc.flags.sqlite3-wasmfs += -sNO_POLYFILL
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emcc.flags.sqlite3-wasmfs += -sWASM_BIGINT=$(emcc.WASM_BIGINT)
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emcc.flags.sqlite3-wasmfs += -sEXPORTED_FUNCTIONS=@$(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-api)
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emcc.flags.sqlite3-wasmfs += -sEXPORTED_RUNTIME_METHODS=FS,wasmMemory,allocateUTF8OnStack
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# wasmMemory ==> for -sIMPORTED_MEMORY
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# allocateUTF8OnStack ==> wasmfs internals
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emcc.flags.sqlite3-wasmfs += -sUSE_CLOSURE_COMPILER=0
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emcc.flags.sqlite3-wasmfs += -Wno-limited-postlink-optimizations
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# ^^^^^ it likes to warn when we have "limited optimizations" via the -g3 flag.
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emcc.flags.sqlite3-wasmfs += -sALLOW_TABLE_GROWTH
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emcc.flags.sqlite3-wasmfs += -sSTACK_SIZE=512KB
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emcc.flags.sqlite3-wasmfs += -sGLOBAL_BASE=4096 # HYPOTHETICALLY keep func table indexes from overlapping w/ heap addr.
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emcc.flags.sqlite3-wasmfs += -sMEMORY64=0
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emcc.flags.sqlite3-wasmfs += -sIMPORTED_MEMORY
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emcc.flags.sqlite3-wasmfs += -sINITIAL_MEMORY=$(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=2 -sENVIRONMENT=web,worker \
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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 += $(sqlite3-wasmfs.fsflags)
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#emcc.flags.sqlite3-wasmfs += -sALLOW_MEMORY_GROWTH
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#^^^ using ALLOW_MEMORY_GROWTH produces a warning from emcc:
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# USE_PTHREADS + ALLOW_MEMORY_GROWTH may run non-wasm code slowly,
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# see https://github.com/WebAssembly/design/issues/1271 [-Wpthreads-mem-growth]
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# And, indeed, it runs slowly if memory is permitted to grow.
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emcc.flags.sqlite3-wasmfs.vanilla :=
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emcc.flags.sqlite3-wasmfs.esm := -sEXPORT_ES6 -sUSE_ES6_IMPORT_META
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$(eval $(call call-make-pre-js,sqlite3-wasmfs,vanilla))
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$(eval $(call call-make-pre-js,sqlite3-wasmfs,esm))
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Xemcc.flags.sqlite3-wasmfs.vanilla += \
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$(pre-post-common.flags.vanilla) \
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$(pre-post-sqlite3-wasmfs.flags.vanilla)
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Xemcc.flags.sqlite3-wasmfs.esm += \
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$(pre-post-common.flags.esm) \
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$(pre-post-sqlite3-wasmfs.flags.esm)
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$(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(sqlite3-wasm.c) \
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$(EXPORTED_FUNCTIONS.api) $(MAKEFILE) $(MAKEFILE.wasmfs)
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$(sqlite3-wasmfs.js): $(pre-post-sqlite3-wasmfs.deps.vanilla)
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$(sqlite3-wasmfs.mjs): $(pre-post-sqlite3-wasmfs.deps.esm)
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# SQLITE3-WASMFS.xJS.RECIPE is the wasmfs-specific counterpart
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# of SQLITE3.xJS.RECIPE from the main makefile.
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define SQLITE3-WASMFS.xJS.RECIPE
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@echo "Building $@ ..."
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$(emcc.bin) -o $@ $(emcc_opt_full) $(emcc.flags) \
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$(cflags.sqlite3-wasmfs) \
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$(emcc.flags.sqlite3-wasmfs) $(emcc.flags.sqlite3-wasmfs.$(1)) \
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$(pre-post-sqlite3-wasmfs.flags.$(1)) \
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$(sqlite3-wasm.c)
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@$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,$(1))
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chmod -x $(sqlite3-wasmfs.wasm)
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$(maybe-wasm-strip) $(sqlite3-wasmfs.wasm)
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@ls -la $(sqlite3-wasmfs.wasm) sqlite3-wasmfs*js
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endef
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$(sqlite3-wasmfs.js):
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$(call SQLITE3-WASMFS.xJS.RECIPE,vanilla)
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$(sqlite3-wasmfs.mjs): $(sqlite3-wasmfs.js)
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$(call SQLITE3-WASMFS.xJS.RECIPE,esm)
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$(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.js)
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wasmfs: $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs)
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#all: wasmfs
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########################################################################
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# speedtest1 for wasmfs.
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speedtest1-wasmfs.js := $(dir.wasmfs)/speedtest1-wasmfs.js
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speedtest1-wasmfs.wasm := $(subst .js,.wasm,$(speedtest1-wasmfs.js))
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emcc.flags.speedtest1-wasmfs := $(sqlite3-wasmfs.fsflags)
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emcc.flags.speedtest1-wasmfs += $(SQLITE_OPT) -DSQLITE_ENABLE_WASMFS
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emcc.flags.speedtest1-wasmfs += -sALLOW_MEMORY_GROWTH=0
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emcc.flags.speedtest1-wasmfs += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128)
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#$(eval $(call call-make-pre-js,speedtest1-wasmfs,vanilla))
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$(speedtest1-wasmfs.js): $(speedtest1.cses) $(sqlite3-wasmfs.js) \
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$(MAKEFILE) $(MAKEFILE.wasmfs) \
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$(pre-post-sqlite3-wasmfs.deps) \
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$(EXPORTED_FUNCTIONS.speedtest1)
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@echo "Building $@ ..."
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$(emcc.bin) \
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$(emcc.speedtest1.common) $(emcc.flags.speedtest1-wasmfs) \
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$(pre-post-sqlite3-wasmfs.flags.vanilla) \
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$(cflags.sqlite3-wasmfs) \
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-o $@ $(speedtest1.cses) -lm
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$(maybe-wasm-strip) $(speedtest1-wasmfs.wasm)
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ls -la $@ $(speedtest1-wasmfs.wasm)
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#speedtest1: $(speedtest1-wasmfs.js)
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wasmfs: $(speedtest1-wasmfs.js)
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CLEAN_FILES += $(speedtest1-wasmfs.js) $(speedtest1-wasmfs.wasm) \
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$(subst .js,.worker.js,$(speedtest1-wasmfs.js))
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# end speedtest1.js
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########################################################################
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