diff options
| -rw-r--r-- | config/clang-flags | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/config/clang-flags b/config/clang-flags index e539a3f..e7b51a3 100644 --- a/config/clang-flags +++ b/config/clang-flags @@ -56,7 +56,10 @@ load_clang_arguments() # if test "X-" = "X-$cc_flags_set"; then # clang -v will return version number following "clang" on Linux machines, - # but on Macs the version number will follow "Apple LLVM version" + # but on Xcode the version number will follow "Apple LLVM version" + # Note that the Xcode reported LLVM version doesn't match the canonical + # LLVM version, so you'll need to do different version checks for + # Xcode. cc_version="`$CC $CFLAGS $H5_CFLAGS -v 2>&1 |\ grep 'clang version' | sed 's/.*clang version \([-a-z0-9\.]*\).*/\1/'`" if test -n "$cc_version"; then @@ -160,9 +163,16 @@ if test "X-clang" = "X-$cc_vendor" -o "X-Apple LLVM" = "X-$cc_vendor"; then ################ HIGH_OPT_CFLAGS="-O3" - DEBUG_OPT_CFLAGS="-Og" NO_OPT_CFLAGS="-O0" + # -Og is only understood by clang 4+ and Xcode 9+ + # Otherwise use -O1 (which is what -Og usually equates to) + if test "X-clang" = "X-$cc_vendor" -a $cc_vers_major -ge 4 -o "X-Apple LLVM" = "X-$cc_vendor" -a $cc_vers_major -ge 9; then + DEBUG_OPT_CFLAGS="-Og" + else + DEBUG_OPT_CFLAGS="-O1" + fi + ############ # Warnings # ############ |