1####################################################################### 2# This GNU makefile drives the build of the sqlite3 WASM 3# components. It is not part of the canonical build process. 4# 5# This build assumes a Linux platform and is not intended for 6# general-purpose client-level use, except for creating builds with 7# custom configurations. It is primarily intended for the sqlite 8# project's own development of the JS/WASM components. 9# 10# Primary targets: 11# 12# default, all = build in dev mode 13# 14# o0, o1, o2, o3, os, oz = full clean/rebuild with the -Ox level indicated 15# by the target name. Rebuild is necessary for all components to get 16# the desired optimization level. 17# 18# dist = create end user deliverables. Add dist.build=oX to build 19# with a specific optimization level, where oX is one of the 20# above-listed o? target names. 21# 22# clean = clean up 23######################################################################## 24SHELL := $(shell which bash 2>/dev/null) 25MAKEFILE := $(lastword $(MAKEFILE_LIST)) 26CLEAN_FILES := 27DISTCLEAN_FILES := ./--dummy-- 28default: all 29release: oz 30 31# Emscripten SDK home dir and related binaries... 32EMSDK_HOME ?= $(word 1,$(wildcard $(HOME)/src/emsdk $(HOME)/emsdk)) 33emcc.bin ?= $(word 1,$(wildcard $(shell which emcc) $(EMSDK_HOME)/upstream/emscripten/emcc)) 34ifeq (,$(emcc.bin)) 35 $(error Cannot find emcc.) 36endif 37 38wasm-strip ?= $(shell which wasm-strip 2>/dev/null) 39ifeq (,$(filter clean,$(MAKECMDGOALS))) 40ifeq (,$(wasm-strip)) 41 $(info WARNING: *******************************************************************) 42 $(info WARNING: builds using -O2/-O3/-Os/-Oz will minify WASM-exported names,) 43 $(info WARNING: breaking _All The Things_. The workaround for that is to build) 44 $(info WARNING: with -g3 (which explodes the file size) and then strip the debug) 45 $(info WARNING: info after compilation, using wasm-strip, to shrink the wasm file.) 46 $(info WARNING: wasm-strip was not found in the PATH so we cannot strip those.) 47 $(info WARNING: If this build uses any optimization level higher than -O1 then) 48 $(info WARNING: the ***resulting WASM binary WILL NOT BE USABLE***.) 49 $(info WARNING: wasm-strip is part of the wabt package:) 50 $(info WARNING: https://github.com/WebAssembly/wabt) 51 $(info WARNING: on Ubuntu-like systems it can be installed with:) 52 $(info WARNING: sudo apt install wabt) 53 $(info WARNING: *******************************************************************) 54endif 55endif # 'make clean' check 56 57ifeq (,$(wasm-strip)) 58 maybe-wasm-strip = echo "not wasm-stripping" 59else 60 maybe-wasm-strip = $(wasm-strip) 61endif 62 63dir.top := ../.. 64# Reminder: some Emscripten flags require absolute paths but we want 65# relative paths for most stuff simply to reduce noise. The 66# $(abspath...) GNU make function can transform relative paths to 67# absolute. 68dir.wasm := $(patsubst %/,%,$(dir $(MAKEFILE))) 69dir.api := api 70dir.jacc := jaccwabyt 71dir.common := common 72dir.fiddle := fiddle 73dir.tool := $(dir.top)/tool 74######################################################################## 75# MAINTENANCE REMINDER: the output .js and .wasm files of emcc must be 76# in _this_ dir, rather than a subdir, or else parts of the generated 77# code get confused and cannot load property. Specifically, when X.js 78# loads X.wasm, whether or not X.js uses the correct path for X.wasm 79# depends on how it's loaded: an HTML script tag will resolve it 80# intuitively, whereas a Worker's call to importScripts() will not. 81# That's a fundamental incompatibility with how URL resolution in 82# JS happens between those two contexts. See: 83# 84# https://zzz.buzz/2017/03/14/relative-uris-in-web-development/ 85# 86# We unfortunately have no way, from Worker-initiated code, to 87# automatically resolve the path from X.js to X.wasm. 88# 89# In case we ever find a solution to that which does not require 90# duplicating the X.js files only to swap out the path to X.wasm for 91# the loading-from-worker case... 92# 93# dir.dout = output dir for deliverables. 94dir.dout := $(dir.wasm)/jswasm 95# dir.tmp = output dir for intermediary build files, as opposed to 96# end-user deliverables. 97dir.tmp := $(dir.wasm)/bld 98#CLEAN_FILES += $(wildcard $(dir.dout)/*) $(wildcard $(dir.tmp)/*) 99ifeq (,$(wildcard $(dir.dout))) 100 dir._tmp := $(shell mkdir -p $(dir.dout)) 101endif 102ifeq (,$(wildcard $(dir.tmp))) 103 dir._tmp := $(shell mkdir -p $(dir.tmp)) 104endif 105 106cflags.common := -I. -I.. -I$(dir.top) 107CLEAN_FILES += *~ $(dir.jacc)/*~ $(dir.api)/*~ $(dir.common)/*~ 108emcc_enable_bigint ?= 1 109sqlite3.c := $(dir.top)/sqlite3.c 110sqlite3.h := $(dir.top)/sqlite3.h 111SQLITE_OPT = \ 112 -DSQLITE_ENABLE_FTS4 \ 113 -DSQLITE_ENABLE_RTREE \ 114 -DSQLITE_ENABLE_EXPLAIN_COMMENTS \ 115 -DSQLITE_ENABLE_UNKNOWN_SQL_FUNCTION \ 116 -DSQLITE_ENABLE_STMTVTAB \ 117 -DSQLITE_ENABLE_DBPAGE_VTAB \ 118 -DSQLITE_ENABLE_DBSTAT_VTAB \ 119 -DSQLITE_ENABLE_BYTECODE_VTAB \ 120 -DSQLITE_ENABLE_OFFSET_SQL_FUNC \ 121 -DSQLITE_OMIT_LOAD_EXTENSION \ 122 -DSQLITE_OMIT_DEPRECATED \ 123 -DSQLITE_OMIT_UTF16 \ 124 -DSQLITE_OMIT_SHARED_CACHE \ 125 -DSQLITE_OMIT_WAL \ 126 -DSQLITE_THREADSAFE=0 \ 127 -DSQLITE_TEMP_STORE=3 \ 128 -DSQLITE_OS_KV_OPTIONAL=1 \ 129 '-DSQLITE_DEFAULT_UNIX_VFS="unix-none"' \ 130 -DSQLITE_USE_URI=1 \ 131 -DSQLITE_WASM_ENABLE_C_TESTS 132# ^^^ most flags are set in sqlite3-wasm.c but we need them 133# made explicit here for building speedtest1.c. 134 135ifneq (,$(filter release,$(MAKECMDGOALS))) 136emcc_opt ?= -Oz -flto 137else 138emcc_opt ?= -O0 139# ^^^^ build times for -O levels higher than 0 are painful at 140# dev-time. 141endif 142# When passing emcc_opt from the CLI, += and re-assignment have no 143# effect, so emcc_opt+=-g3 doesn't work. So... 144emcc_opt_full := $(emcc_opt) -g3 145# ^^^ ALWAYS use -g3. See below for why. 146# 147# ^^^ -flto improves runtime speed at -O0 considerably but doubles 148# build time. 149# 150# ^^^^ -O3, -Oz, -Os minify symbol names and there appears to be no 151# way around that except to use -g3, but -g3 causes the binary file 152# size to absolutely explode (approx. 5x larger). This minification 153# utterly breaks the resulting module, making it unsable except as 154# self-contained/self-referential-only code, as ALL of the exported 155# symbols get minified names. 156# 157# However, we have an option for using -Oz or -Os: 158# 159# Build with (-Os -g3) or (-Oz -g3) then use wasm-strip, from the wabt 160# tools package (https://github.com/WebAssembly/wabt), to strip the 161# debugging symbols. That results in a small build with unmangled 162# symbol names. -Oz gives ever-so-slightly better compression than 163# -Os: not quite 1% in some completely unscientific tests. Runtime 164# speed for the unit tests is all over the place either way so it's 165# difficult to say whether -Os gives any speed benefit over -Oz. 166# 167# (Much later: -O2 consistently gives the best speeds.) 168######################################################################## 169 170 171$(sqlite3.c) $(sqlite3.h): 172 $(MAKE) -C $(dir.top) sqlite3.c 173 174.PHONY: clean distclean 175clean: 176 -rm -f $(CLEAN_FILES) 177distclean: clean 178 -rm -f $(DISTCLEAN_FILES) 179 180ifeq (release,$(filter release,$(MAKECMDGOALS))) 181 ifeq (,$(wasm-strip)) 182 $(error Cannot make release-quality binary because wasm-strip is not available. \ 183 See notes in the warning above) 184 endif 185else 186 $(info Development build. Use '$(MAKE) release' for a smaller release build.) 187endif 188 189bin.version-info := $(dir.wasm)/bin.version-info 190# ^^^^ NOT in $(dir.tmp) because we need it to survive the cleanup 191# process for the dist build to work properly. 192$(bin.version-info): $(dir.wasm)/version-info.c $(sqlite3.h) $(MAKEFILE) 193 $(CC) -O0 -I$(dir.top) -o $@ $< 194DISTCLEAN_FILES += $(bin.version-info) 195 196bin.stripccomments := $(dir.tool)/stripccomments 197$(bin.stripccomments): $(bin.stripccomments).c $(MAKEFILE) 198 $(CC) -o $@ $< 199DISTCLEAN_FILES += $(bin.stripccomments) 200 201EXPORTED_FUNCTIONS.api.in := $(abspath $(dir.api)/EXPORTED_FUNCTIONS.sqlite3-api) 202EXPORTED_FUNCTIONS.api := $(dir.tmp)/EXPORTED_FUNCTIONS.api 203$(EXPORTED_FUNCTIONS.api): $(EXPORTED_FUNCTIONS.api.in) $(MAKEFILE) 204 cat $(EXPORTED_FUNCTIONS.api.in) > $@ 205 206sqlite3-license-version.js := $(dir.tmp)/sqlite3-license-version.js 207sqlite3-license-version-header.js := $(dir.api)/sqlite3-license-version-header.js 208sqlite3-api-build-version.js := $(dir.tmp)/sqlite3-api-build-version.js 209# sqlite3-api.jses = the list of JS files which make up $(sqlite3-api.js), in 210# the order they need to be assembled. 211sqlite3-api.jses := $(sqlite3-license-version.js) 212sqlite3-api.jses += $(dir.api)/sqlite3-api-prologue.js 213sqlite3-api.jses += $(dir.common)/whwasmutil.js 214sqlite3-api.jses += $(dir.jacc)/jaccwabyt.js 215sqlite3-api.jses += $(dir.api)/sqlite3-api-glue.js 216sqlite3-api.jses += $(sqlite3-api-build-version.js) 217sqlite3-api.jses += $(dir.api)/sqlite3-api-oo1.js 218sqlite3-api.jses += $(dir.api)/sqlite3-api-worker1.js 219sqlite3-api.jses += $(dir.api)/sqlite3-api-opfs.js 220sqlite3-api.jses += $(dir.api)/sqlite3-api-cleanup.js 221 222# "External" API files which are part of our distribution 223# but not part of the sqlite3-api.js amalgamation. 224SOAP.js := $(dir.api)/sqlite3-opfs-async-proxy.js 225sqlite3-worker1.js := $(dir.api)/sqlite3-worker1.js 226sqlite3-worker1-promiser.js := $(dir.api)/sqlite3-worker1-promiser.js 227define CP_XAPI 228sqlite3-api.ext.jses += $$(dir.dout)/$$(notdir $(1)) 229$$(dir.dout)/$$(notdir $(1)): $(1) $$(MAKEFILE) 230 cp $$< $$@ 231endef 232$(foreach X,$(SOAP.js) $(sqlite3-worker1.js) $(sqlite3-worker1-promiser.js),\ 233 $(eval $(call CP_XAPI,$(X)))) 234all: $(sqlite3-api.ext.jses) 235 236sqlite3-api.js := $(dir.tmp)/sqlite3-api.js 237$(sqlite3-api.js): $(sqlite3-api.jses) $(MAKEFILE) 238 @echo "Making $@..." 239 @for i in $(sqlite3-api.jses); do \ 240 echo "/* BEGIN FILE: $$i */"; \ 241 cat $$i; \ 242 echo "/* END FILE: $$i */"; \ 243 done > $@ 244 245$(sqlite3-api-build-version.js): $(bin.version-info) $(MAKEFILE) 246 @echo "Making $@..." 247 @{ \ 248 echo 'self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){'; \ 249 echo -n ' sqlite3.version = '; \ 250 $(bin.version-info) --json; \ 251 echo ';'; \ 252 echo '});'; \ 253 } > $@ 254 255######################################################################## 256# --post-js and --pre-js are emcc flags we use to append/prepend JS to 257# the generated emscripten module file. 258pre-js.js := $(dir.api)/pre-js.js 259post-js.js := $(dir.tmp)/post-js.js 260post-jses := \ 261 $(dir.api)/post-js-header.js \ 262 $(sqlite3-api.js) \ 263 $(dir.api)/post-js-footer.js 264$(post-js.js): $(post-jses) $(MAKEFILE) 265 @echo "Making $@..." 266 @for i in $(post-jses); do \ 267 echo "/* BEGIN FILE: $$i */"; \ 268 cat $$i; \ 269 echo "/* END FILE: $$i */"; \ 270 done > $@ 271extern-post-js.js := $(dir.api)/extern-post-js.js 272extern-pre-js.js := $(dir.api)/extern-pre-js.js 273pre-post-common.flags := \ 274 --post-js=$(post-js.js) \ 275 --extern-post-js=$(extern-post-js.js) \ 276 --extern-pre-js=$(sqlite3-license-version.js) 277pre-post-jses.deps := $(post-js.js) \ 278 $(extern-post-js.js) $(extern-pre-js.js) $(sqlite3-license-version.js) 279$(sqlite3-license-version.js): $(sqlite3.h) $(sqlite3-license-version-header.js) $(MAKEFILE) 280 @echo "Making $@..."; { \ 281 cat $(sqlite3-license-version-header.js); \ 282 echo '/*'; \ 283 echo '** This code was built from sqlite3 version...'; \ 284 echo "** "; \ 285 awk -e '/define SQLITE_VERSION/{$$1=""; print "**" $$0}' \ 286 -e '/define SQLITE_SOURCE_ID/{$$1=""; print "**" $$0}' $(sqlite3.h); \ 287 echo '*/'; \ 288 } > $@ 289 290######################################################################## 291# call-make-pre-js creates rules for pre-js-$(1).js. $1 = the base 292# name of the JS file on whose behalf this pre-js is for. 293define call-make-pre-js 294pre-post-$(1).flags ?= 295$$(dir.tmp)/pre-js-$(1).js: $$(pre-js.js) $$(MAKEFILE) 296 cp $$(pre-js.js) $$@ 297 echo "Module[xInstantiateWasm].uri = '$(1).wasm';" >> $$@ 298pre-post-$(1).deps := $$(pre-post-jses.deps) $$(dir.tmp)/pre-js-$(1).js 299pre-post-$(1).flags += --pre-js=$$(dir.tmp)/pre-js-$(1).js 300endef 301#$(error $(call call-make-pre-js,sqlite3-wasmfs)) 302# /post-js and pre-js 303######################################################################## 304 305######################################################################## 306# emcc flags for .c/.o/.wasm/.js. 307emcc.flags := 308#emcc.flags += -v # _very_ loud but also informative about what it's doing 309# -g3 is needed to keep -O2 and higher from creating broken JS via 310# minification. 311 312######################################################################## 313# emcc flags for .c/.o. 314emcc.cflags := 315emcc.cflags += -std=c99 -fPIC 316# -------------^^^^^^^^ we currently need c99 for WASM-specific sqlite3 APIs. 317emcc.cflags += -I. -I$(dir.top) 318 319######################################################################## 320# emcc flags specific to building the final .js/.wasm file... 321emcc.jsflags := -fPIC 322emcc.jsflags += --minify 0 323emcc.jsflags += --no-entry 324emcc.jsflags += -sMODULARIZE 325emcc.jsflags += -sSTRICT_JS 326emcc.jsflags += -sDYNAMIC_EXECUTION=0 327emcc.jsflags += -sNO_POLYFILL 328emcc.jsflags += -sEXPORTED_FUNCTIONS=@$(EXPORTED_FUNCTIONS.api) 329emcc.exportedRuntimeMethods := \ 330 -sEXPORTED_RUNTIME_METHODS=FS,wasmMemory 331 # FS ==> stdio/POSIX I/O proxies 332 # wasmMemory ==> required by our code for use with -sIMPORTED_MEMORY 333emcc.jsflags += $(emcc.exportedRuntimeMethods) 334emcc.jsflags += -sUSE_CLOSURE_COMPILER=0 335emcc.jsflags += -sIMPORTED_MEMORY 336emcc.environment := -sENVIRONMENT=web,worker 337emcc.jsflags += -sALLOW_MEMORY_GROWTH 338# emcc: warning: USE_PTHREADS + ALLOW_MEMORY_GROWTH may run non-wasm code 339# slowly, see https://github.com/WebAssembly/design/issues/1271 340# [-Wpthreads-mem-growth] 341emcc.jsflags += -sINITIAL_MEMORY=13107200 342#emcc.jsflags += -sINITIAL_MEMORY=64225280 343# ^^^^ 64MB is not enough for WASMFS/OPFS test runs using batch-runner.js 344emcc.jsflags += $(emcc.environment) 345#emcc.jsflags += -sTOTAL_STACK=4194304 346 347sqlite3.js.init-func := sqlite3InitModule 348# ^^^^ $(sqlite3.js.init-func) symbol name is hard-coded in 349# $(extern-post-js.js) as well as in numerous docs. If changed, it 350# needs to be globally modified in *.js and all related documentation. 351 352emcc.jsflags += -sEXPORT_NAME=$(sqlite3.js.init-func) 353emcc.jsflags += -sGLOBAL_BASE=4096 # HYPOTHETICALLY keep func table indexes from overlapping w/ heap addr. 354#emcc.jsflags += -sSTRICT # fails due to missing __syscall_...() 355#emcc.jsflags += -sALLOW_UNIMPLEMENTED_SYSCALLS 356#emcc.jsflags += -sFILESYSTEM=0 # only for experimentation. sqlite3 needs the FS API 357#emcc.jsflags += -sABORTING_MALLOC 358emcc.jsflags += -sALLOW_TABLE_GROWTH 359# -sALLOW_TABLE_GROWTH is required for installing new SQL UDFs 360emcc.jsflags += -Wno-limited-postlink-optimizations 361# ^^^^^ it likes to warn when we have "limited optimizations" via the -g3 flag. 362#emcc.jsflags += -sSTANDALONE_WASM # causes OOM errors, not sure why 363# https://lld.llvm.org/WebAssembly.html 364emcc.jsflags += -sERROR_ON_UNDEFINED_SYMBOLS=0 365emcc.jsflags += -sLLD_REPORT_UNDEFINED 366#emcc.jsflags += --allow-undefined 367#emcc.jsflags += --import-undefined 368#emcc.jsflags += --unresolved-symbols=import-dynamic --experimental-pic 369#emcc.jsflags += --experimental-pic --unresolved-symbols=ingore-all --import-undefined 370#emcc.jsflags += --unresolved-symbols=ignore-all 371emcc.jsflags += -sWASM_BIGINT=$(emcc_enable_bigint) 372# ^^^^ MEMORY64=1 fails to load, erroring with: 373# invalid memory limits flags 0x5 374# (enable via --experimental-wasm-memory64) 375# 376# ^^^^ MEMORY64=2 builds and loads but dies when we do things like: 377# 378# new Uint8Array(heapWrappers().HEAP8U.buffer, ptr, n) 379# 380# because ptr is now a BigInt, so is invalid for passing to arguments 381# which have strict must-be-a-Number requirements. 382######################################################################## 383 384 385######################################################################## 386# -sSINGLE_FILE: 387# https://github.com/emscripten-core/emscripten/blob/main/src/settings.js#L1704 388# -sSINGLE_FILE=1 would be really nice but we have to build with -g 389# for -O2 and higher to work (else minification breaks the code) and 390# cannot wasm-strip the binary before it gets encoded into the JS 391# file. The result is that the generated JS file is, because of the -g 392# debugging info, _huge_. 393######################################################################## 394 395sqlite3.js := $(dir.dout)/sqlite3.js 396sqlite3.wasm := $(dir.dout)/sqlite3.wasm 397sqlite3-wasm.c := $(dir.api)/sqlite3-wasm.c 398# sqlite3-wasm.o vs sqlite3-wasm.c: building against the latter 399# (predictably) results in a slightly faster binary, but we're close 400# enough to the target speed requirements that the 500ms makes a 401# difference. Thus we build all binaries against sqlite3-wasm.c 402# instead of building a shared copy of sqlite3-wasm.o. 403$(eval $(call call-make-pre-js,sqlite3)) 404$(sqlite3.js): 405$(sqlite3.js): $(MAKEFILE) $(sqlite3.wasm.obj) \ 406 $(EXPORTED_FUNCTIONS.api) \ 407 $(pre-post-sqlite3.deps) 408 @echo "Building $@ ..." 409 $(emcc.bin) -o $@ $(emcc_opt_full) $(emcc.flags) \ 410 $(emcc.jsflags) $(pre-post-common.flags) $(pre-post-sqlite3.flags) \ 411 $(cflags.common) $(SQLITE_OPT) $(sqlite3-wasm.c) 412 chmod -x $(sqlite3.wasm) 413 $(maybe-wasm-strip) $(sqlite3.wasm) 414 @ls -la $@ $(sqlite3.wasm) 415$(sqlite3.wasm): $(sqlite3.js) 416CLEAN_FILES += $(sqlite3.js) $(sqlite3.wasm) 417all: $(sqlite3.js) 418wasm: $(sqlite3.js) 419# End main Emscripten-based module build 420######################################################################## 421 422######################################################################## 423# batch-runner.js... 424dir.sql := sql 425speedtest1 := ../../speedtest1 426speedtest1.c := ../../test/speedtest1.c 427speedtest1.sql := $(dir.sql)/speedtest1.sql 428speedtest1.cliflags := --size 25 --big-transactions 429$(speedtest1): 430 $(MAKE) -C ../.. speedtest1 431$(speedtest1.sql): $(speedtest1) $(MAKEFILE) 432 $(speedtest1) $(speedtest1.cliflags) --script $@ 433batch-runner.list: $(MAKEFILE) $(speedtest1.sql) $(dir.sql)/000-mandelbrot.sql 434 bash split-speedtest1-script.sh $(dir.sql)/speedtest1.sql 435 ls -1 $(dir.sql)/*.sql | grep -v speedtest1.sql | sort > $@ 436clean-batch: 437 rm -f batch-runner.list $(dir.sql)/speedtest1*.sql 438# ^^^ we don't do this along with 'clean' because we clean/rebuild on 439# a regular basis with different -Ox flags and rebuilding the batch 440# pieces each time is an unnecessary time sink. 441batch: batch-runner.list 442all: batch 443# end batch-runner.js 444######################################################################## 445# speedtest1.js... 446# speedtest1-common.eflags = emcc flags used by multiple builds of speedtest1 447# speedtest1.eflags = emcc flags used by main build of speedtest1 448speedtest1-common.eflags := $(emcc_opt_full) 449speedtest1.eflags := 450speedtest1.eflags += -sENVIRONMENT=web 451speedtest1-common.eflags += -sINVOKE_RUN=0 452speedtest1-common.eflags += --no-entry 453#speedtest1-common.eflags += -flto 454speedtest1-common.eflags += -sABORTING_MALLOC 455speedtest1-common.eflags += -sINITIAL_MEMORY=128450560 456speedtest1-common.eflags += -sSTRICT_JS 457speedtest1-common.eflags += -sMODULARIZE 458speedtest1-common.eflags += -Wno-limited-postlink-optimizations 459EXPORTED_FUNCTIONS.speedtest1 := $(abspath $(dir.tmp)/EXPORTED_FUNCTIONS.speedtest1) 460speedtest1-common.eflags += -sEXPORTED_FUNCTIONS=@$(EXPORTED_FUNCTIONS.speedtest1) 461speedtest1-common.eflags += $(emcc.exportedRuntimeMethods) 462speedtest1-common.eflags += -sALLOW_TABLE_GROWTH 463speedtest1-common.eflags += -sDYNAMIC_EXECUTION=0 464speedtest1-common.eflags += --minify 0 465speedtest1-common.eflags += -sEXPORT_NAME=$(sqlite3.js.init-func) 466speedtest1-common.eflags += -sWASM_BIGINT=$(emcc_enable_bigint) 467speedtest1-common.eflags += $(pre-post-common.flags) 468speedtest1.exit-runtime0 := -sEXIT_RUNTIME=0 469speedtest1.exit-runtime1 := -sEXIT_RUNTIME=1 470# Re -sEXIT_RUNTIME=1 vs 0: if it's 1 and speedtest1 crashes, we get 471# this error from emscripten: 472# 473# > native function `free` called after runtime exit (use 474# NO_EXIT_RUNTIME to keep it alive after main() exits)) 475# 476# If it's 0 and it crashes, we get: 477# 478# > stdio streams had content in them that was not flushed. you should 479# set EXIT_RUNTIME to 1 (see the FAQ), or make sure to emit a newline 480# when you printf etc. 481# 482# and pending output is not flushed because it didn't end with a 483# newline (by design). The lesser of the two evils seems to be 484# -sEXIT_RUNTIME=1 but we need EXIT_RUNTIME=0 for the worker-based app 485# which runs speedtest1 multiple times. 486 487$(EXPORTED_FUNCTIONS.speedtest1): $(EXPORTED_FUNCTIONS.api) 488 @echo "Making $@ ..." 489 @{ echo _wasm_main; cat $(EXPORTED_FUNCTIONS.api); } > $@ 490speedtest1.js := $(dir.dout)/speedtest1.js 491speedtest1.wasm := $(subst .js,.wasm,$(speedtest1.js)) 492speedtest1.cflags := $(cflags.common) -DSQLITE_SPEEDTEST1_WASM 493speedtest1.cses := $(speedtest1.c) $(sqlite3-wasm.c) 494$(eval $(call call-make-pre-js,speedtest1)) 495$(speedtest1.js): $(MAKEFILE) $(speedtest1.cses) \ 496 $(pre-post-speedtest1.deps) \ 497 $(EXPORTED_FUNCTIONS.speedtest1) 498 @echo "Building $@ ..." 499 $(emcc.bin) \ 500 $(speedtest1.eflags) $(speedtest1-common.eflags) $(speedtest1.cflags) \ 501 $(pre-post-speedtest1.flags) \ 502 $(SQLITE_OPT) \ 503 $(speedtest1.exit-runtime0) \ 504 -o $@ $(speedtest1.cses) -lm 505 $(maybe-wasm-strip) $(speedtest1.wasm) 506 ls -la $@ $(speedtest1.wasm) 507 508speedtest1: $(speedtest1.js) 509all: speedtest1 510CLEAN_FILES += $(speedtest1.js) $(speedtest1.wasm) 511# end speedtest1.js 512######################################################################## 513 514######################################################################## 515# fiddle_remote is the remote destination for the fiddle app. It 516# must be a [user@]HOST:/path for rsync. 517# Note that the target "should probably" contain a symlink of 518# index.html -> fiddle.html. 519fiddle_remote ?= 520ifeq (,$(fiddle_remote)) 521ifneq (,$(wildcard /home/stephan)) 522 fiddle_remote = wh:www/wh/sqlite3/. 523else ifneq (,$(wildcard /home/drh)) 524 #fiddle_remote = if appropriate, add that user@host:/path here 525endif 526endif 527$(fiddle_files): default 528push-fiddle: $(fiddle_files) 529 @if [ x = "x$(fiddle_remote)" ]; then \ 530 echo "fiddle_remote must be a [user@]HOST:/path for rsync"; \ 531 exit 1; \ 532 fi 533 rsync -va fiddle/ $(fiddle_remote) 534# end fiddle remote push 535######################################################################## 536 537######################################################################## 538# Convenience rules to rebuild with various -Ox levels. Much 539# experimentation shows -O2 to be the clear winner in terms of speed. 540# Note that build times with anything higher than -O0 are somewhat 541# painful. 542 543.PHONY: o0 o1 o2 o3 os oz 544o-xtra := -flto 545# ^^^^ -flto can have a considerably performance boost at -O0 but 546# doubles the build time and seems to have negligible effect on 547# higher optimization levels. 548o0: clean 549 $(MAKE) -e "emcc_opt=-O0" 550o1: clean 551 $(MAKE) -e "emcc_opt=-O1 $(o-xtra)" 552o2: clean 553 $(MAKE) -e "emcc_opt=-O2 $(o-xtra)" 554o3: clean 555 $(MAKE) -e "emcc_opt=-O3 $(o-xtra)" 556os: clean 557 @echo "WARNING: -Os can result in a build with mysteriously missing pieces!" 558 $(MAKE) -e "emcc_opt=-Os $(o-xtra)" 559oz: clean 560 $(MAKE) -e "emcc_opt=-Oz $(o-xtra)" 561 562######################################################################## 563# Sub-makes... 564 565include fiddle.make 566 567ifneq (,$(filter wasmfs,$(MAKECMDGOALS))) 568# wasmfs build disabled 2022-10-19 per /chat 569# discussion. OPFS-over-wasmfs was initially a stopgap measure and a 570# convenient point of comparison for the OPFS sqlite3_vfs's 571# performance, but it currently doubles our deliverables for very 572# little, if any, benefit. 573# 574######################################################################## 575# Some platforms do not support the WASMFS build. Raspberry Pi OS is one 576# of them. As such platforms are discovered, add their (uname -m) name 577# to PLATFORMS_WITH_NO_WASMFS to exclude the wasmfs build parts. 578PLATFORMS_WITH_NO_WASMFS := aarch64 # add any others here 579THIS_ARCH := $(shell /usr/bin/uname -m) 580ifneq (,$(filter $(THIS_ARCH),$(PLATFORMS_WITH_NO_WASMFS))) 581$(info This platform does not support the WASMFS build.) 582HAVE_WASMFS := 0 583else 584HAVE_WASMFS := 1 585include wasmfs.make 586endif 587endif 588# /wasmfs 589######################################################################## 590 591######################################################################## 592# Create deliverables: 593ifneq (,$(filter dist,$(MAKECMDGOALS))) 594include dist.make 595endif 596 597######################################################################## 598# Push files to public wasm-testing.sqlite.org server 599wasm-testing.include = $(dir.dout) *.js *.html \ 600 batch-runner.list $(dir.sql) $(dir.common) $(dir.fiddle) $(dir.jacc) 601wasm-testing.exclude = sql/speedtest1.sql 602wasm-testing.dir = /jail/sites/wasm-testing 603wasm-testing.dest ?= wasm-testing:$(wasm-testing.dir) 604# ---------------------^^^^^^^^^^^^ ssh alias 605push: 606 rsync -z -e ssh --ignore-times --chown=stephan:www-data --group -r \ 607 $(patsubst %,--exclude=%,$(wasm-testing.exclude)) \ 608 $(wasm-testing.include) $(wasm-testing.dest) 609 ssh wasm-testing 'cd $(wasm-testing.dir) && bash .gzip' || \ 610 echo "SSH failed: it's likely that stale content will be served via old gzip files." 611