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Diffstat (limited to 'ext/wasm/wasmfs.make')
| -rw-r--r-- | ext/wasm/wasmfs.make | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/ext/wasm/wasmfs.make b/ext/wasm/wasmfs.make new file mode 100644 index 0000000..71c0fe7 --- /dev/null +++ b/ext/wasm/wasmfs.make @@ -0,0 +1,115 @@ +#!/usr/bin/make +#^^^^ help emacs select makefile mode +# +# This is a sub-make for building a standalone wasmfs-based +# sqlite3.wasm. It is intended to be "include"d from the main +# GNUMakefile. +######################################################################## +MAKEFILE.wasmfs := $(lastword $(MAKEFILE_LIST)) +$(warning The WASMFS build is currently incomplete.) + +#dir.wasmfs := $(dir.wasm) +dir.wasmfs := $(dir.dout) +sqlite3-wasmfs.js := $(dir.wasmfs)/sqlite3-wasmfs.js +sqlite3-wasmfs.mjs := $(dir.wasmfs)/sqlite3-wasmfs.mjs +sqlite3-wasmfs.wasm := $(dir.wasmfs)/sqlite3-wasmfs.wasm + +CLEAN_FILES += $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.wasm) \ + $(subst .js,.worker.js,$(sqlite3-wasmfs.js)) \ + $(sqlite3-wasmfs.mjs) \ + $(subst .mjs,.worker.mjs,$(sqlite3-wasmfs.mjs)) + +######################################################################## +# emcc flags for .c/.o. +cflags.sqlite3-wasmfs := +cflags.sqlite3-wasmfs += -std=c99 -fPIC +cflags.sqlite3-wasmfs += -pthread +cflags.sqlite3-wasmfs += -DSQLITE_ENABLE_WASMFS + +######################################################################## +# emcc flags specific to building the final .js/.wasm file... +emcc.flags.sqlite3-wasmfs := +emcc.flags.sqlite3-wasmfs += \ + -sEXPORTED_RUNTIME_METHODS=wasmMemory,allocateUTF8OnStack,stringToUTF8OnStack + # wasmMemory ==> for -sIMPORTED_MEMORY + # *OnStack ==> wasmfs internals (leaky abstraction) +emcc.flags.sqlite3-wasmfs += -sUSE_CLOSURE_COMPILER=0 +emcc.flags.sqlite3-wasmfs += -Wno-limited-postlink-optimizations +# ^^^^^ it likes to warn when we have "limited optimizations" via the -g3 flag. +emcc.flags.sqlite3-wasmfs += -sMEMORY64=0 +emcc.flags.sqlite3-wasmfs += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128) +# ^^^^ 64MB is not enough for WASMFS/OPFS test runs using batch-runner.js +sqlite3-wasmfs.fsflags := -pthread -sWASMFS \ + -sPTHREAD_POOL_SIZE=1 \ + -sERROR_ON_UNDEFINED_SYMBOLS=0 -sLLD_REPORT_UNDEFINED +# ^^^^^ why undefined symbols are necessary for the wasmfs build is anyone's guess. +emcc.flags.sqlite3-wasmfs += $(sqlite3-wasmfs.fsflags) +emcc.flags.sqlite3-wasmfs += -sALLOW_MEMORY_GROWTH=0 +#^^^ using ALLOW_MEMORY_GROWTH produces a warning from emcc: +# USE_PTHREADS + ALLOW_MEMORY_GROWTH may run non-wasm code slowly, +# see https://github.com/WebAssembly/design/issues/1271 [-Wpthreads-mem-growth] +# And, indeed, it runs slowly if memory is permitted to grow. +#emcc.flags.sqlite3-wasmfs.vanilla := +#emcc.flags.sqlite3-wasmfs.esm := -sEXPORT_ES6 -sUSE_ES6_IMPORT_META +sqlite3-api.mjs.wasmfs := $(dir.tmp)/sqlite3-api-wasmfs.mjs +$(eval $(call SETUP_LIB_BUILD_MODE,sqlite3-wasmfs,esm,1,\ + $(sqlite3-api.mjs.wasmfs), $(sqlite3-wasmfs.mjs),\ + $(c-pp.D.sqlite3-bundler-friendly) -Dwasmfs,\ + -sEXPORT_ES6 -sUSE_ES6_IMPORT_META\ +)) +$(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(MAKEFILE.wasmfs) +######################################################################## +# Build quirk: we cannot build BOTH .js and .mjs with our current +# build infrastructure because the supplemental *.worker.js files get +# generated with the name of the main module file +# ($(sqlite3-wasmfs.{js,mjs})) hard-coded in them. Thus the last one +# to get built gets the *.worker.js files mapped to it. In order to +# build both modes they would need to have distinct base names or +# output directories. "The problem" with giving them distinct base +# names is that it means that the corresponding .wasm file is also +# built/saved multiple times. +# +wasmfs.build.ext := mjs +$(sqlite3-wasmfs.js) $(sqlite3-wasmfs.mjs): $(SOAP.js.bld) +ifeq (js,$(wasmfs.build.ext)) + $(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.js) + wasmfs: $(sqlite3-wasmfs.js) +else + $(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.mjs) + wasmfs: $(sqlite3-wasmfs.mjs) +endif +#all: wasmfs + +######################################################################## +# speedtest1 for wasmfs. +speedtest1-wasmfs.mjs := $(dir.wasmfs)/speedtest1-wasmfs.mjs +speedtest1-wasmfs.wasm := $(subst .mjs,.wasm,$(speedtest1-wasmfs.mjs)) +emcc.flags.speedtest1-wasmfs := $(sqlite3-wasmfs.fsflags) +emcc.flags.speedtest1-wasmfs += $(SQLITE_OPT) +emcc.flags.speedtest1-wasmfs += -sALLOW_MEMORY_GROWTH=0 +emcc.flags.speedtest1-wasmfs += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128) +#$(eval $(call call-make-pre-js,speedtest1-wasmfs,ems)) +$(speedtest1-wasmfs.mjs): $(speedtest1.cfiles) $(sqlite3-wasmfs.js) \ + $(MAKEFILE) $(MAKEFILE.wasmfs) \ + $(pre-post-sqlite3-wasmfs-esm.deps) \ + $(EXPORTED_FUNCTIONS.speedtest1) + @echo "Building $@ ..." + $(emcc.bin) \ + $(pre-post-sqlite3-wasmfs-esm.flags) \ + $(cflags.common) \ + $(cflags.sqlite3-wasmfs) \ + $(emcc.speedtest1.common) \ + $(emcc.flags.speedtest1-vanilla) \ + $(emcc.flags.sqlite3-wasmfs) \ + $(emcc.flags.speedtest1-wasmfs) \ + -o $@ $(speedtest1.cfiles) -lm + @$(call SQLITE3.xJS.ESM-EXPORT-DEFAULT,1) + $(maybe-wasm-strip) $(speedtest1-wasmfs.wasm) + chmod -x $(speedtest1-wasmfs.wasm) + ls -la $@ $(speedtest1-wasmfs.wasm) + +wasmfs: $(speedtest1-wasmfs.mjs) +CLEAN_FILES += $(speedtest1-wasmfs.mjs) $(speedtest1-wasmfs.wasm) \ + $(subst .js,.worker.js,$(speedtest1-wasmfs.mjs)) +# end speedtest1.js +######################################################################## |