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Diffstat (limited to '')
| -rw-r--r-- | ext/wasm/wasmfs.make | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/ext/wasm/wasmfs.make b/ext/wasm/wasmfs.make new file mode 100644 index 0000000..81b4187 --- /dev/null +++ b/ext/wasm/wasmfs.make @@ -0,0 +1,113 @@ +#!/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)) + +# Maintenance reminder: these particular files cannot be built into a +# subdirectory because loading of the auxiliary +# sqlite3-wasmfs.worker.js file it creates fails if sqlite3-wasmfs.js +# is loaded from any directory other than the one in which the +# containing HTML lives. Similarly, they cannot be loaded from a +# Worker to an Emscripten quirk regarding loading nested Workers. +dir.wasmfs := $(dir.wasm) +sqlite3-wasmfs.js := $(dir.wasmfs)/sqlite3-wasmfs.js +sqlite3-wasmfs.wasm := $(dir.wasmfs)/sqlite3-wasmfs.wasm + +CLEAN_FILES += $(sqlite3-wasmfs.js) $(sqlite3-wasmfs.wasm) \ + $(subst .js,.worker.js,$(sqlite3-wasmfs.js)) + +######################################################################## +# emcc flags for .c/.o. +sqlite3-wasmfs.cflags := +sqlite3-wasmfs.cflags += -std=c99 -fPIC +sqlite3-wasmfs.cflags += -pthread +sqlite3-wasmfs.cflags += $(cflags.common) +sqlite3-wasmfs.cflags += $(SQLITE_OPT) -DSQLITE_ENABLE_WASMFS + +######################################################################## +# emcc flags specific to building the final .js/.wasm file... +sqlite3-wasmfs.jsflags := -fPIC +sqlite3-wasmfs.jsflags += --no-entry +sqlite3-wasmfs.jsflags += --minify 0 +sqlite3-wasmfs.jsflags += -sMODULARIZE +sqlite3-wasmfs.jsflags += -sSTRICT_JS +sqlite3-wasmfs.jsflags += -sDYNAMIC_EXECUTION=0 +sqlite3-wasmfs.jsflags += -sNO_POLYFILL +sqlite3-wasmfs.jsflags += -sEXPORTED_FUNCTIONS=@$(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-api) +sqlite3-wasmfs.jsflags += -sEXPORTED_RUNTIME_METHODS=FS,wasmMemory,allocateUTF8OnStack + # wasmMemory ==> for -sIMPORTED_MEMORY + # allocateUTF8OnStack ==> wasmfs internals +sqlite3-wasmfs.jsflags += -sUSE_CLOSURE_COMPILER=0 +sqlite3-wasmfs.jsflags += -sIMPORTED_MEMORY +#sqlite3-wasmfs.jsflags += -sINITIAL_MEMORY=13107200 +#sqlite3-wasmfs.jsflags += -sTOTAL_STACK=4194304 +sqlite3-wasmfs.jsflags += -sEXPORT_NAME=$(sqlite3.js.init-func) +sqlite3-wasmfs.jsflags += -sGLOBAL_BASE=4096 # HYPOTHETICALLY keep func table indexes from overlapping w/ heap addr. +#sqlite3-wasmfs.jsflags += -sFILESYSTEM=0 # only for experimentation. sqlite3 needs the FS API +# Perhaps the wasmfs build doesn't? +#sqlite3-wasmfs.jsflags += -sABORTING_MALLOC +sqlite3-wasmfs.jsflags += -sALLOW_TABLE_GROWTH +sqlite3-wasmfs.jsflags += -Wno-limited-postlink-optimizations +# ^^^^^ it likes to warn when we have "limited optimizations" via the -g3 flag. +sqlite3-wasmfs.jsflags += -sERROR_ON_UNDEFINED_SYMBOLS=0 +sqlite3-wasmfs.jsflags += -sLLD_REPORT_UNDEFINED +#sqlite3-wasmfs.jsflags += --import-undefined +sqlite3-wasmfs.jsflags += -sMEMORY64=0 +sqlite3-wasmfs.jsflags += -sINITIAL_MEMORY=128450560 +# ^^^^ 64MB is not enough for WASMFS/OPFS test runs using batch-runner.js +sqlite3-wasmfs.fsflags := -pthread -sWASMFS -sPTHREAD_POOL_SIZE=2 -sENVIRONMENT=web,worker +# -sPTHREAD_POOL_SIZE values of 2 or higher trigger that bug. +sqlite3-wasmfs.jsflags += $(sqlite3-wasmfs.fsflags) +#sqlite3-wasmfs.jsflags += -sALLOW_MEMORY_GROWTH +#^^^ using ALLOW_MEMORY_GROWTH produces a warning from emcc: +# USE_PTHREADS + ALLOW_MEMORY_GROWTH may run non-wasm code slowly, +# see https://github.com/WebAssembly/design/issues/1271 [-Wpthreads-mem-growth] +sqlite3-wasmfs.jsflags += -sWASM_BIGINT=$(emcc.WASM_BIGINT) +$(eval $(call call-make-pre-js,sqlite3-wasmfs)) +sqlite3-wasmfs.jsflags += $(pre-post-common.flags) $(pre-post-sqlite3-wasmfs.flags) +$(sqlite3-wasmfs.js): $(sqlite3-wasm.c) \ + $(EXPORTED_FUNCTIONS.api) $(MAKEFILE) $(MAKEFILE.wasmfs) \ + $(pre-post-sqlite3-wasmfs.deps) + @echo "Building $@ ..." + $(emcc.bin) -o $@ $(emcc_opt_full) $(emcc.flags) \ + $(sqlite3-wasmfs.cflags) $(sqlite3-wasmfs.jsflags) \ + $(sqlite3-wasm.c) + chmod -x $(sqlite3-wasmfs.wasm) + $(maybe-wasm-strip) $(sqlite3-wasmfs.wasm) + @ls -la $@ $(sqlite3-wasmfs.wasm) +$(sqlite3-wasmfs.wasm): $(sqlite3-wasmfs.js) +wasmfs: $(sqlite3-wasmfs.js) +all: wasmfs + +######################################################################## +# speedtest1 for wasmfs. +speedtest1-wasmfs.js := $(dir.wasmfs)/speedtest1-wasmfs.js +speedtest1-wasmfs.wasm := $(subst .js,.wasm,$(speedtest1-wasmfs.js)) +speedtest1-wasmfs.eflags := $(sqlite3-wasmfs.fsflags) +speedtest1-wasmfs.eflags += $(SQLITE_OPT) -DSQLITE_ENABLE_WASMFS +speedtest1-wasmfs.eflags += -sALLOW_MEMORY_GROWTH=0 +speedtest1-wasmfs.eflags += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.128) +$(eval $(call call-make-pre-js,speedtest1-wasmfs)) +$(speedtest1-wasmfs.js): $(speedtest1.cses) $(sqlite3-wasmfs.js) \ + $(MAKEFILE) $(MAKEFILE.wasmfs) \ + $(pre-post-speedtest1-wasmfs.deps) \ + $(EXPORTED_FUNCTIONS.speedtest1) + @echo "Building $@ ..." + $(emcc.bin) \ + $(speedtest1-wasmfs.eflags) $(speedtest1-common.eflags) \ + $(pre-post-speedtest1-wasmfs.flags) \ + $(speedtest1.cflags) \ + $(sqlite3-wasmfs.cflags) \ + -o $@ $(speedtest1.cses) -lm + $(maybe-wasm-strip) $(speedtest1-wasmfs.wasm) + ls -la $@ $(speedtest1-wasmfs.wasm) + +speedtest1: $(speedtest1-wasmfs.js) +CLEAN_FILES += $(speedtest1-wasmfs.js) $(speedtest1-wasmfs.wasm) \ + $(subst .js,.worker.js,$(speedtest1-wasmfs.js)) +# end speedtest1.js +######################################################################## |