diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | scripts/Kconfig.include | 8 |
2 files changed, 9 insertions, 1 deletions
@@ -537,7 +537,7 @@ endif # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), # and from include/config/auto.conf.cmd to detect the compiler upgrade. -CC_VERSION_TEXT = $(shell $(CC) --version | head -n 1) +CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1) ifeq ($(config-targets),1) # =========================================================================== diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include index 87ff1dcc6bd5..0b267fb27f07 100644 --- a/scripts/Kconfig.include +++ b/scripts/Kconfig.include @@ -18,6 +18,10 @@ if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)") # Return y if <command> exits with 0, n otherwise success = $(if-success,$(1),y,n) +# $(failure,<command>) +# Return n if <command> exits with 0, y otherwise +failure = $(if-success,$(1),n,y) + # $(cc-option,<flag>) # Return y if the compiler supports <flag>, n otherwise cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null) @@ -26,5 +30,9 @@ cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null) # Return y if the linker supports <flag>, n otherwise ld-option = $(success,$(LD) -v $(1)) +# check if $(CC) and $(LD) exist +$(error-if,$(failure,command -v $(CC)),compiler '$(CC)' not found) +$(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found) + # gcc version including patch level gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh $(CC)) |