diff options
Diffstat (limited to 'crawl-ref/source/Makefile')
| -rw-r--r-- | crawl-ref/source/Makefile | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/crawl-ref/source/Makefile b/crawl-ref/source/Makefile index 3a11feb772..fd0d812e99 100644 --- a/crawl-ref/source/Makefile +++ b/crawl-ref/source/Makefile @@ -534,10 +534,16 @@ else endif ifdef LTO -CFOPTIMIZE += -flto=jobserver -fwhole-program - # FIXME: this check is fragile, and should be done via a full compile test. - ifeq ($(shell $(GXX) -x c++ /dev/null -fno-fat-lto-objects 2>&1 | grep 'unrecognized command line option'),) - CFOPTIMIZE += -fno-fat-lto-objects + ifeq ($(shell $(GXX) -v 2>&1|grep clang),) + CFOPTIMIZE += -flto=jobserver -fwhole-program + # FIXME: this check is fragile, and should be done via a full compile test. + ifeq ($(shell $(GXX) -x c++ /dev/null -fno-fat-lto-objects 2>&1 | grep 'unrecognized command line option'),) + CFOPTIMIZE += -fno-fat-lto-objects + endif + else + # Clang uses a different syntax than gcc, using -O4 instead. This means + # you can't select a different level of optimization to go with LTO. + CFOPTIMIZE := $(patsubst -O%,,$(CFOPTIMIZE)) -O4 endif endif |