Update build_libpng.sh

A fix to allow building the library on Mac M1/arm64
NOAA-EMC · Nov 10, 2022 · 8ba0750 · 8ba0750
1 parent 0b79c05
commit 8ba0750
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/libs/build_libpng.sh b/libs/build_libpng.sh
@@ -45,6 +45,14 @@ URL="https://github.com/glennrp/libpng"
 [[ ${DOWNLOAD_ONLY} =~ [yYtT] ]] && exit 0
 [[ -d $software ]] && cd $software || ( echo "$software does not exist, ABORT!"; exit 1 )
 sourceDir=$PWD
+
+host=$(uname -s)
+arch=$(uname -m)
+
+if [[ $host == "Darwin" ]] && [[ $arch == "arm64" ]]; then
+  sed -i -e '/set(PNGLIB_VERSION*/a\'$'\n''set(PNG_ARM_NEON off CACHE INTERNAL "")'$'\n' ./CMakeLists.txt
+fi
+
 [[ -d build ]] && rm -rf build
 mkdir -p build && cd build