Build libvips against Highway

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 Uses libvips v8.15.0, compiled with Emscripten v3.1.46.
 
+### Added
+
+- Enable optimized SIMD paths in libvips (using Highway).
+
 ### Changed
 
 - Update methods/enums for libvips 8.15.

build.sh

@@ -284,15 +284,15 @@ node --version
   meson install -C _build --tag devel
 )
 
-[ -f "$TARGET/lib/pkgconfig/libhwy.pc" ] || [ -n "$DISABLE_JXL" ] || (
+[ -f "$TARGET/lib/pkgconfig/libhwy.pc" ] || [[ -n "$DISABLE_SIMD" && -n "$DISABLE_JXL" ]] || (
   stage "Compiling hwy"
   mkdir $DEPS/hwy
   curl -Ls https://github.com/google/highway/archive/refs/tags/$VERSION_HWY.tar.gz | tar xzC $DEPS/hwy --strip-components=1
   cd $DEPS/hwy
   # Remove build path from binary
   sed -i 's/HWY_ASSERT/HWY_DASSERT/' hwy/aligned_allocator.cc
   emcmake cmake -B_build -H. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$TARGET -DBUILD_SHARED_LIBS=FALSE \
-    -DBUILD_TESTING=FALSE -DHWY_ENABLE_CONTRIB=FALSE -DHWY_ENABLE_EXAMPLES=FALSE
+    -DBUILD_TESTING=FALSE -DHWY_ENABLE_CONTRIB=FALSE -DHWY_ENABLE_EXAMPLES=FALSE -DHWY_ENABLE_TESTS=FALSE
   make -C _build install
 )
 
@@ -331,8 +331,12 @@ node --version
     -DJPEGXL_FORCE_SYSTEM_BROTLI=TRUE -DJPEGXL_FORCE_SYSTEM_LCMS2=TRUE -DJPEGXL_FORCE_SYSTEM_HWY=TRUE \
     -DCMAKE_C_FLAGS="$CFLAGS -DJXL_DEBUG_ON_ABORT=0" -DCMAKE_CXX_FLAGS="$CXXFLAGS -DJXL_DEBUG_ON_ABORT=0"
   make -C _build install
-  # Ensure we don't link with lcms2 in the vips-jxl side module
-  [ -z "$ENABLE_MODULES"  ] || sed -i '/^Requires.private:/s/ lcms2//' $TARGET/lib/pkgconfig/libjxl.pc
+  if [ -n "$ENABLE_MODULES" ]; then
+    # Ensure we don't link with highway in the vips-jxl side module
+    [ -z "$ENABLE_SIMD" ] || sed -i '/^Requires.private:/s/ libhwy//' $TARGET/lib/pkgconfig/libjxl.pc
+    # ... and the same for lcms2
+    sed -i '/^Requires.private:/s/ lcms2//' $TARGET/lib/pkgconfig/libjxl.pc
+  fi
 )
 
 [ -f "$TARGET/lib/pkgconfig/spng.pc" ] || (
@@ -460,9 +464,9 @@ node --version
     -Ddeprecated=false -Dexamples=false -Dcplusplus=$LIBVIPS_CPP -Dauto_features=disabled \
     ${ENABLE_MODULES:+-Dmodules=enabled} -Dcgif=enabled -Dexif=enabled ${ENABLE_AVIF:+-Dheif=enabled} \
     -Dheif-module=enabled -Dimagequant=enabled -Djpeg=enabled ${ENABLE_JXL:+-Djpeg-xl=enabled} \
-    -Djpeg-xl-module=enabled -Dlcms=enabled ${ENABLE_SVG:+-Dresvg=enabled} -Dresvg-module=enabled \
-    -Dspng=enabled -Dtiff=enabled -Dwebp=enabled -Dnsgif=true -Dppm=true -Danalyze=true -Dradiance=true \
-    -Dzlib=enabled
+    -Djpeg-xl-module=enabled -Dlcms=enabled ${ENABLE_SIMD:+-Dhighway=enabled} ${ENABLE_SVG:+-Dresvg=enabled} \
+    -Dresvg-module=enabled -Dspng=enabled -Dtiff=enabled -Dwebp=enabled -Dnsgif=true -Dppm=true -Danalyze=true \
+    -Dradiance=true -Dzlib=enabled
   meson install -C _build --tag runtime,devel
   # Emscripten requires linking to side modules to find the necessary symbols to export
   module_dir=$(printf '%s\n' $TARGET/lib/vips-modules-* | sort -n | tail -1)