Add ccache and incremental build system for faster development
- Add ccache to Docker image for compiled object caching - Change build defaults: incremental by default, skip deps by default - Add new flags: --full, --clean-kicad, --build-deps - Skip wxWidgets configure if already configured (check Makefile timestamps) - Remove unused source hash stamp functions (make handles dependencies) - Update build.md with new build system documentation Performance improvements: - Single file change: 7:35 → 1:34 (4.8x faster) - No-change rebuild: 7:35 → 1:31 (5x faster) - Asyncify post-processing (~1 min) is now the bottleneck 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Viktor Vaczi
parent
9c271996c2
commit
5b919ef66f
7 changed files with 241 additions and 182 deletions
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@ -53,70 +53,90 @@ fi
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mkdir -p "$BUILD_DIR"
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cd "$BUILD_DIR"
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# Configure with emconfigure
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# Key flags based on wxWidgets-wasm:
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# --host=emscripten Host system (detected via config.sub)
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# --enable-universal Use wxUniversal (draws widgets directly)
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# --disable-shared Build static libraries
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# --with-opengl Enable OpenGL/WebGL support
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# --enable-exceptions Enable C++ exceptions (needed for KiCad debug builds)
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# --disable-richtext Not needed for KiCad, simplifies build
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# --without-libtiff Avoid external dependencies
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# --disable-xlocale Browser environment handles locale
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echo ""
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echo "=== Configuring ==="
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# Ensure Emscripten's zlib port is built (works in Docker and on host)
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# This populates the cache sysroot with zlib.h and libz.a
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echo "Building Emscripten zlib port..."
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embuilder build zlib
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# Get Emscripten cache sysroot path (portable across environments)
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EM_CACHE_SYSROOT="$(em-config CACHE)/sysroot"
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echo "Emscripten cache sysroot: $EM_CACHE_SYSROOT"
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# Set flags for Emscripten compatibility
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# Z_HAVE_UNISTD_H ensures zlib includes <unistd.h> for read/write/lseek
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# Include pcre2 headers from the build directory (generated during configure)
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PCRE2_INCLUDE="$BUILD_DIR/3rdparty/pcre/src"
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# Configure debug/release flags based on DEBUG_BUILD environment variable
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if [ "${DEBUG_BUILD:-1}" = "1" ]; then
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WX_DEBUG_FLAGS="-g -O1"
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WX_CONFIGURE_DEBUG="--enable-debug"
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echo "Building wxWidgets in DEBUG mode"
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# Determine if we need to run configure
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# Skip configure if:
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# 1. Makefile exists (already configured)
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# 2. configure.in hasn't changed since last configure
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NEEDS_CONFIGURE=0
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if [ ! -f "$BUILD_DIR/Makefile" ]; then
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echo "Not configured yet, will run configure..."
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NEEDS_CONFIGURE=1
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elif [ "$WX_SOURCE/configure.in" -nt "$BUILD_DIR/Makefile" ]; then
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echo "configure.in changed since last configure, will reconfigure..."
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NEEDS_CONFIGURE=1
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elif [ "$WX_SOURCE/configure" -nt "$BUILD_DIR/Makefile" ]; then
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echo "configure script changed, will reconfigure..."
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NEEDS_CONFIGURE=1
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else
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WX_DEBUG_FLAGS="-O2"
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WX_CONFIGURE_DEBUG=""
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echo "Building wxWidgets in RELEASE mode"
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echo "Already configured, skipping configure (use clean build to reconfigure)"
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fi
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# Include emscripten cache sysroot for zlib headers
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export CFLAGS="-DZ_HAVE_UNISTD_H=1 -I$EM_CACHE_SYSROOT/include ${WX_DEBUG_FLAGS} -fexceptions -pthread -matomics -mbulk-memory"
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export CXXFLAGS="-DZ_HAVE_UNISTD_H=1 -I$EM_CACHE_SYSROOT/include -I$PCRE2_INCLUDE ${WX_DEBUG_FLAGS} -fexceptions -pthread -matomics -mbulk-memory"
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export LDFLAGS="-L$EM_CACHE_SYSROOT/lib/wasm32-emscripten"
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if [ $NEEDS_CONFIGURE -eq 1 ]; then
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# Configure with emconfigure
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# Key flags based on wxWidgets-wasm:
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# --host=emscripten Host system (detected via config.sub)
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# --enable-universal Use wxUniversal (draws widgets directly)
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# --disable-shared Build static libraries
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# --with-opengl Enable OpenGL/WebGL support
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# --enable-exceptions Enable C++ exceptions (needed for KiCad debug builds)
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# --disable-richtext Not needed for KiCad, simplifies build
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# --without-libtiff Avoid external dependencies
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# --disable-xlocale Browser environment handles locale
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emconfigure "$WX_SOURCE/configure" \
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--host=emscripten \
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--without-subdirs \
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--enable-universal \
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--disable-shared \
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--with-opengl \
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--enable-exceptions \
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--disable-richtext \
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--without-libtiff \
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--disable-xlocale \
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--with-cxx=17 \
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--enable-utf8 \
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--with-zlib=sys \
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${WX_CONFIGURE_DEBUG}
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echo ""
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echo "=== Configuring ==="
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# Build PCRE first to avoid race condition with parallel builds
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# PCRE headers (pcre2.h) must be generated before regex.cpp compiles
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echo ""
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echo "=== Building PCRE first (dependency) ==="
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emmake make -C 3rdparty/pcre
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# Ensure Emscripten's zlib port is built (works in Docker and on host)
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# This populates the cache sysroot with zlib.h and libz.a
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echo "Building Emscripten zlib port..."
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embuilder build zlib
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# Get Emscripten cache sysroot path (portable across environments)
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EM_CACHE_SYSROOT="$(em-config CACHE)/sysroot"
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echo "Emscripten cache sysroot: $EM_CACHE_SYSROOT"
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# Set flags for Emscripten compatibility
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# Z_HAVE_UNISTD_H ensures zlib includes <unistd.h> for read/write/lseek
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# Include pcre2 headers from the build directory (generated during configure)
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PCRE2_INCLUDE="$BUILD_DIR/3rdparty/pcre/src"
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# Configure debug/release flags based on DEBUG_BUILD environment variable
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if [ "${DEBUG_BUILD:-1}" = "1" ]; then
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WX_DEBUG_FLAGS="-g -O1"
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WX_CONFIGURE_DEBUG="--enable-debug"
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echo "Building wxWidgets in DEBUG mode"
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else
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WX_DEBUG_FLAGS="-O2"
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WX_CONFIGURE_DEBUG=""
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echo "Building wxWidgets in RELEASE mode"
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fi
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# Include emscripten cache sysroot for zlib headers
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export CFLAGS="-DZ_HAVE_UNISTD_H=1 -I$EM_CACHE_SYSROOT/include ${WX_DEBUG_FLAGS} -fexceptions -pthread -matomics -mbulk-memory"
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export CXXFLAGS="-DZ_HAVE_UNISTD_H=1 -I$EM_CACHE_SYSROOT/include -I$PCRE2_INCLUDE ${WX_DEBUG_FLAGS} -fexceptions -pthread -matomics -mbulk-memory"
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export LDFLAGS="-L$EM_CACHE_SYSROOT/lib/wasm32-emscripten"
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emconfigure "$WX_SOURCE/configure" \
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--host=emscripten \
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--without-subdirs \
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--enable-universal \
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--disable-shared \
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--with-opengl \
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--enable-exceptions \
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--disable-richtext \
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--without-libtiff \
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--disable-xlocale \
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--with-cxx=17 \
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--enable-utf8 \
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--with-zlib=sys \
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${WX_CONFIGURE_DEBUG}
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# Build PCRE first to avoid race condition with parallel builds
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# PCRE headers (pcre2.h) must be generated before regex.cpp compiles
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echo ""
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echo "=== Building PCRE first (dependency) ==="
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emmake make -C 3rdparty/pcre
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fi
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# Build wxWidgets
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echo ""
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