Add support (untested yet) for compiling with clang instead of gcc

1 files changed, 18 insertions, 0 deletions

diff --git a/chromium-dev/build/chromium-dev.SlackBuild b/chromium-dev/build/chromium-dev.SlackBuild
index bfb57227..f9b27ab0 100755
--- a/chromium-dev/build/chromium-dev.SlackBuild
+++ b/chromium-dev/build/chromium-dev.SlackBuild
@@ -56,6 +56,10 @@ TAG=${TAG:-alien}
 # but you'll lose some Chrome functionality like using in-browser applications:
 USE_NACL=${USE_NACL:-1}
 
+# Use the clang compiler. Results in faster build and smaller binaries.
+# I default this to "off" because it is untested:
+USE_CLANG=${USE_CLANG:-0}
+
 DOCS="AUTHORS LICENSE README*"
 
 # Where do we look for sources?
@@ -231,6 +235,19 @@ sed -e 's|config_dir.Append("chromium")|config_dir.Append("${PRGNAM}")|' \
     -e 's|config_dir.Append("chrome-frame")|config_dir.Append("chrome-frame-dev")|' \
     -i chrome/common/chrome_paths_linux.cc
 
+if [ "$USE_CLANG" = "1" ]; then
+  # clang doesn't support this option yet:
+  sed -e '/-Wno-absolute-value/d' -i build/common.gypi
+
+  # -Dclang=1 uses clang instead of gcc.
+  # -Dclang_use_chrome_plugins=1 fails with clang 3.5 - disable for now.
+  CLANG_OPTS=" -Dclang=1 -Dclang_use_chrome_plugins=0"
+  export CC="clang"
+  export CXX="clang++"
+else
+  CLANG_OPTS=" -Dclang=0"
+fi
+
 chown -R root:root .
 chmod -R u+w,go+r-w,a+X-s .
 
@@ -247,6 +264,7 @@ export -n CXXFLAGS="$SLKCFLAGS"
 export -n CFLAGS="$SLKCFLAGS -Wno-unused-local-typedefs"
 
 _chromium_conf=(
+    ${CLANG_OPTS}
     -Ddisable_glibc=1
     -Dffmpeg_branding=Chrome
     -Dgoogle_api_key=$_google_api_key