| # Kconfig helper macros | |
| # Convenient variables | |
| comma := , | |
| quote := " | |
| squote := ' | |
| empty := | |
| space := $(empty) $(empty) | |
| dollar := $ | |
| right_paren := ) | |
| left_paren := ( | |
| # $(if-success,<command>,<then>,<else>) | |
| # Return <then> if <command> exits with 0, <else> otherwise. | |
| if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)") | |
| # $(success,<command>) | |
| # Return y if <command> exits with 0, n otherwise | |
| success = $(if-success,$(1),y,n) | |
| # $(cc-option,<flag>) | |
| # Return y if the compiler supports <flag>, n otherwise | |
| cc-option = $(success,$(CC) -Werror $(CLANG_FLAGS) $(1) -S -x c /dev/null -o /dev/null) | |
| # $(ld-option,<flag>) | |
| # Return y if the linker supports <flag>, n otherwise | |
| ld-option = $(success,$(LD) -v $(1)) | |
| # gcc version including patch level | |
| gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') |