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Makefile doc touchups - no code/build changes.

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FossilOrigin-Name: 3458a481b9ee391122dba531358d664d5219ce4a58cbce93d07df57cc64dc2c7
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stephan
2023-01-28 09:51:41 +00:00
parent 919fe5bac6
commit c7170350d7
3 changed files with 21 additions and 27 deletions
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34
ext/wasm/GNUmakefile
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@ -582,14 +582,15 @@ endef
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
# (predictably) results in a slightly faster binary, but we're close
# (predictably) results in a slightly faster binary. We're close
# enough to the target speed requirements that the 500ms makes a
# difference. Thus we build all binaries against sqlite3-wasm.c
# instead of building a shared copy of sqlite3-wasm.o.
# difference, so we build all binaries against sqlite3-wasm.c instead
# of building a shared copy of sqlite3-wasm.o to link against.
########################################################################
# SQLITE3.xJS.RECIPE = the $(call)able recipe body for $(sqlite3.js)
# and $(sqlite3.mjs). $1 = one of (vanilla, esm). $2 must be 1 for
# ES6-style builds, 0 for other builds.
# SQLITE3.xJS.EXPORT-DEFAULT is part of SQLITE3-WASMFS.xJS.RECIPE and
# SETUP_LIB_BUILD_MODE, factored into a separate piece to avoid code
# duplication. $1 is 1 if the build mode needs this workaround (esm,
# bundler-friendly) and 0 if not (vanilla).
#
# Reminder for ESM builds: even if we use -sEXPORT_ES6=0, emcc _still_
# adds:
@ -603,11 +604,6 @@ sqlite3-wasm.c := $(dir.api)/sqlite3-wasm.c
#
# Upstream RFE:
# https://github.com/emscripten-core/emscripten/issues/18237
########################################################################
# SQLITE3.xJS.EXPORT-DEFAULT is part of SQLITE3[-WASMFS].xJS.RECIPE,
# factored into a separate piece to avoid code duplication. $1 is 1 if
# the build mode needs this workaround (esm, bundler-friendly) and 0
# if not (vanilla).
define SQLITE3.xJS.ESM-EXPORT-DEFAULT
if [ x1 = x$(1) ]; then \
echo "Fragile workaround for an Emscripten annoyance. See SQLITE3.xJS.RECIPE."; \
@ -707,17 +703,16 @@ $(eval $(call SETUP_LIB_BUILD_MODE,bundler-friendly,1,\
#
########################################################################
########################################################################
# We have to ensure that we do not build both $(sqlite3.js) and
# $(sqlite3.mjs) in parallel because both result in the creation of
# $(sqlite3.wasm). We have no(?) way to build just the .mjs file
# without also building the .wasm file. i.e. we're building
# $(sqlite3.wasm) multiple times, but that's apparently unavoidable
# (and harmless, just a waste of build time).
# We have to ensure that we do not build both $(sqlite3*.*js) in
# parallel because both result in the creation of $(sqlite3.wasm). We
# have no way to build just the .mjs file without also building the
# .wasm file because the generated .mjs file has to include info about
# the imports needed by the wasm file, so they have to be built
# together. i.e. we're building $(sqlite3.wasm) multiple times, but
# that's unavoidable (and harmless, just a waste of build time).
$(sqlite3.wasm): $(sqlite3.js)
$(sqlite3.mjs): $(sqlite3.js)
$(sqlite3-bundler-friendly.mjs): $(sqlite3.mjs)
# maintenance reminder: the deps on ^^^ must all be such that they are
# never built in parallel.
CLEAN_FILES += $(sqlite3.wasm)
########################################################################
@ -755,7 +750,6 @@ emcc.speedtest1 += -sALLOW_MEMORY_GROWTH
emcc.speedtest1 += -sINITIAL_MEMORY=$(emcc.INITIAL_MEMORY.$(emcc.INITIAL_MEMORY))
emcc.speedtest1.common += -sINVOKE_RUN=0
emcc.speedtest1.common += --no-entry
#emcc.speedtest1.common += -flto
emcc.speedtest1.common += -sABORTING_MALLOC
emcc.speedtest1.common += -sSTRICT_JS
emcc.speedtest1.common += -sMODULARIZE