Commit a95b37e2 authored Mar 27, 2018 by Masahiro Yamada

kbuild: get <linux/compiler_types.h> out of <linux/kconfig.h>



Since commit 28128c61 ("kconfig.h: Include compiler types to avoid
missed struct attributes"), <linux/kconfig.h> pulls in kernel-space
headers to unrelated places.

Commit 0f9da844 ("MIPS: boot: Define __ASSEMBLY__ for its.S build")
suppress the build error by defining __ASSEMBLY__, but ITS (i.e. DTS)
is not assembly, and should not include <linux/compiler_types.h> in the
first place.

Looking at arch/s390/tools/Makefile, host programs gen_facilities and
gen_opcode_table now pull in <linux/compiler_types.h> as well.

The motivation for that commit was to define necessary attributes
before any struct is defined.  Obviously, this happens only in C.

It is enough to include <linux/compiler_types.h> only when compiling
C files, and only when compiling kernel space.  Move the include to
c_flags.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

parent 127668cf

include/linux/kconfig.h

+0 −3

Original line number	Diff line number	Diff line
		@@ -70,7 +70,4 @@
		*/
		#define IS_ENABLED(option) __or(IS_BUILTIN(option), IS_MODULE(option))

		/* Make sure we always have all types and struct attributes defined. */
		#include <linux/compiler_types.h>

		#endif /* __LINUX_KCONFIG_H */

scripts/Makefile.lib

+1 −0

Original line number	Diff line number	Diff line
		@@ -152,6 +152,7 @@ __cpp_flags = $(call flags,_cpp_flags)
		endif

		c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
		-include $(srctree)/include/linux/compiler_types.h \
		$(__c_flags) $(modkern_cflags) \
		$(basename_flags) $(modname_flags)