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Add experimental esm target to ext/wasm/GNUmakefile to tell emcc to generate sqlite3.mjs (ES6 module) instead of sqlite3.js. Related to discussion at [forum:ed4596cf8496a39b].

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FossilOrigin-Name: e55d8eba83012492d85418dc0faedce5896027ecc70295a5ca1826f61a5edbaf
This commit is contained in:
stephan
2022-11-03 22:51:20 +00:00
parent 4df2ab575f
commit 7d24ff2971
3 changed files with 22 additions and 9 deletions
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17
ext/wasm/GNUmakefile
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@ -96,7 +96,7 @@ dir.dout := $(dir.wasm)/jswasm
# dir.tmp = output dir for intermediary build files, as opposed to
# end-user deliverables.
dir.tmp := $(dir.wasm)/bld
#CLEAN_FILES += $(wildcard $(dir.dout)/*) $(wildcard $(dir.tmp)/*)
CLEAN_FILES += $(dir.tmp)/* $(dir.dout)/*
ifeq (,$(wildcard $(dir.dout)))
dir._tmp := $(shell mkdir -p $(dir.dout))
endif
@ -418,7 +418,20 @@ emcc.jsflags += -sWASM_BIGINT=$(emcc.WASM_BIGINT)
# debugging info, _huge_.
########################################################################
sqlite3.js := $(dir.dout)/sqlite3.js
########################################################################
# AN EXPERIMENT: undocumented Emscripten feature: if the target file
# extension is "mjs", it defaults to ES6 module builds:
# https://github.com/emscripten-core/emscripten/issues/14383
ifeq (,$(filter esm,$(MAKECMDGOALS)))
sqlite3.js.ext := js
else
esm.deps := $(filter-out esm,$(MAKECMDGOALS))
esm: $(if $(esm.deps),$(esm.deps),all)
sqlite3.js.ext := mjs
endif
# /esm
########################################################################
sqlite3.js := $(dir.dout)/sqlite3.$(sqlite3.js.ext)
sqlite3.wasm := $(dir.dout)/sqlite3.wasm
sqlite3-wasm.c := $(dir.api)/sqlite3-wasm.c
# sqlite3-wasm.o vs sqlite3-wasm.c: building against the latter