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| author | Dave Airlie <airlied@redhat.com> | 2018-03-28 14:30:41 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2018-03-28 14:30:41 +1000 |
| commit | 2b4f44eec2be2688511c2b617d0e1b4f94c45ba4 (patch) | |
| tree | 533c03602f4ae6d6404db6fa56c88e6f83e1bebe /tools/scripts/Makefile.include | |
| parent | Merge branch 'drm-next-4.17' of git://people.freedesktop.org/~agd5f/linux int... (diff) | |
| parent | Linux 4.16-rc7 (diff) | |
| download | linux-2b4f44eec2be2688511c2b617d0e1b4f94c45ba4.tar.gz linux-2b4f44eec2be2688511c2b617d0e1b4f94c45ba4.zip | |
Backmerge tag 'v4.16-rc7' into drm-next
Linux 4.16-rc7
This was requested by Daniel, and things were getting
a bit hard to reconcile, most of the conflicts were
trivial though.
Diffstat (limited to 'tools/scripts/Makefile.include')
| -rw-r--r-- | tools/scripts/Makefile.include | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include index fcb3ed0be5f8..dd614463d4d6 100644 --- a/tools/scripts/Makefile.include +++ b/tools/scripts/Makefile.include @@ -42,6 +42,24 @@ EXTRA_WARNINGS += -Wformat CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?) +# Makefiles suck: This macro sets a default value of $(2) for the +# variable named by $(1), unless the variable has been set by +# environment or command line. This is necessary for CC and AR +# because make sets default values, so the simpler ?= approach +# won't work as expected. +define allow-override + $(if $(or $(findstring environment,$(origin $(1))),\ + $(findstring command line,$(origin $(1)))),,\ + $(eval $(1) = $(2))) +endef + +# Allow setting various cross-compile vars or setting CROSS_COMPILE as a prefix. +$(call allow-override,CC,$(CROSS_COMPILE)gcc) +$(call allow-override,AR,$(CROSS_COMPILE)ar) +$(call allow-override,LD,$(CROSS_COMPILE)ld) +$(call allow-override,CXX,$(CROSS_COMPILE)g++) +$(call allow-override,STRIP,$(CROSS_COMPILE)strip) + ifeq ($(CC_NO_CLANG), 1) EXTRA_WARNINGS += -Wstrict-aliasing=3 endif |