diff options
Diffstat (limited to 'ext')
| -rw-r--r-- | ext/wasm/kvvfs.make | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/ext/wasm/kvvfs.make b/ext/wasm/kvvfs.make new file mode 100644 index 000000000..83a269137 --- /dev/null +++ b/ext/wasm/kvvfs.make @@ -0,0 +1,82 @@ +#!/usr/bin/make +#^^^^ help emacs select makefile mode +# +# This is a sub-make for building a standalone kvvfs-based +# sqlite3.wasm. It is intended to be "include"d from the main +# GNUMakefile. +# +# Notable potential TODOs: +# +# - Trim down a custom sqlite3-api.js for this build. We can elimate +# the jaccwabyt dependency, for example, because this build won't +# make use of the VFS bits. Similarly, we can eliminate or replace +# parts of the OO1 API, or provide a related API which manages +# singletons of the localStorage/sessionStorage instances. +# +######################################################################## +MAKEFILE.kvvfs := $(lastword $(MAKEFILE_LIST)) + +kvvfs.js := sqlite3-kvvfs.js +kvvfs.wasm := sqlite3-kvvfs.wasm +kvvfs.wasm.c := $(dir.api)/sqlite3-wasm.c + +CLEAN_FILES += $(kvvfs.js) $(kvvfs.wasm) + +######################################################################## +# emcc flags for .c/.o/.wasm. +kvvfs.flags = +#kvvfs.flags += -v # _very_ loud but also informative about what it's doing + +######################################################################## +# emcc flags for .c/.o. +kvvfs.cflags := +kvvfs.cflags += -std=c99 -fPIC +kvvfs.cflags += -I. -I$(dir.top) +kvvfs.cflags += -DSQLITE_OS_KV=1 $(SQLITE_OPT) + +######################################################################## +# emcc flags specific to building the final .js/.wasm file... +kvvfs.jsflags := -fPIC +kvvfs.jsflags += --no-entry +kvvfs.jsflags += -sENVIRONMENT=web +kvvfs.jsflags += -sMODULARIZE +kvvfs.jsflags += -sSTRICT_JS +kvvfs.jsflags += -sDYNAMIC_EXECUTION=0 +kvvfs.jsflags += -sNO_POLYFILL +kvvfs.jsflags += -sEXPORTED_FUNCTIONS=@$(dir.api)/EXPORTED_FUNCTIONS.sqlite3-api +kvvfs.jsflags += -sEXPORTED_RUNTIME_METHODS=FS,wasmMemory,allocateUTF8OnStack + # wasmMemory ==> for -sIMPORTED_MEMORY + # allocateUTF8OnStack ==> kvvfs internals +kvvfs.jsflags += -sUSE_CLOSURE_COMPILER=0 +kvvfs.jsflags += -sIMPORTED_MEMORY +#kvvfs.jsflags += -sINITIAL_MEMORY=13107200 +#kvvfs.jsflags += -sTOTAL_STACK=4194304 +kvvfs.jsflags += -sEXPORT_NAME=sqlite3InitModule +kvvfs.jsflags += -sGLOBAL_BASE=4096 # HYPOTHETICALLY keep func table indexes from overlapping w/ heap addr. +kvvfs.jsflags += --post-js=$(post-js.js) +#kvvfs.jsflags += -sFILESYSTEM=0 # only for experimentation. sqlite3 needs the FS API +# Perhaps the kvvfs build doesn't? +#kvvfs.jsflags += -sABORTING_MALLOC +kvvfs.jsflags += -sALLOW_MEMORY_GROWTH +kvvfs.jsflags += -sALLOW_TABLE_GROWTH +kvvfs.jsflags += -Wno-limited-postlink-optimizations +# ^^^^^ it likes to warn when we have "limited optimizations" via the -g3 flag. +kvvfs.jsflags += -sERROR_ON_UNDEFINED_SYMBOLS=0 +kvvfs.jsflags += -sLLD_REPORT_UNDEFINED +#kvvfs.jsflags += --import-undefined +kvvfs.jsflags += -sMEMORY64=0 +ifneq (0,$(enable_bigint)) +kvvfs.jsflags += -sWASM_BIGINT +endif + +$(kvvfs.js): $(MAKEFILE) $(MAKEFILE.kvvfs) $(kvvfs.wasm.c) \ + EXPORTED_FUNCTIONS.api \ + $(post-js.js) + $(emcc.bin) -o $@ $(emcc_opt) $(emcc.flags) $(kvvfs.cflags) $(kvvfs.jsflags) $(kvvfs.wasm.c) + chmod -x $(kvvfs.wasm) +ifneq (,$(wasm-strip)) + $(wasm-strip) $(kvvfs.wasm) +endif + @ls -la $@ $(kvvfs.wasm) + +kvvfs: $(kvvfs.js) |