diff options
| author | Geert Uytterhoeven <geert@linux-m68k.org> | 2014-05-27 09:54:12 +0200 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2018-11-29 11:48:14 +0100 |
| commit | 7b4e903804b18690f029f7c9b125c4ddb0c94081 (patch) | |
| tree | d3ed1846cacab57fa359e8d489196ae20fab8bb4 | |
| parent | 99c1b6fe9469c573b26fbe3402ff72d2d7b03d4b (diff) | |
Makefile: Fix unrecognized cross-compiler command line options
On architectures that setup CROSS_COMPILE in their arch/*/Makefile
(arc, blackfin, m68k, mips, parisc, score, sh, tile, unicore32, xtensa),
cc-option and cc-disable-warning may check against the wrong compiler,
causing errors like
cc1: error: unrecognized command line option "-Wno-maybe-uninitialized"
if the host gcc supports a compiler option, while the cross compiler
doesn't support that option.
Move all logic using cc-option or cc-disable-warning below the inclusion
of the arch's Makefile to fix this.
Introduced by
- commit e74fc973b6e531fef1fce8b101ffff05ecfb774c ("Turn off
-Wmaybe-uninitialized when building with -Os"),
- commit 61163efae02040f66a95c8ed17f4407951ba58fa ("kbuild: LLVMLinux:
Add Kbuild support for building kernel with Clang").
As -Wno-maybe-uninitialized requires a quite recent gcc (gcc 4.6.3 on
Ubuntu 12.04 LTS doesn't support it), this only showed up recently (gcc
4.8.2 on Ubuntu 14.04 LTS does support it).
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
| -rw-r--r-- | Makefile | 8 |
1 files changed, 5 insertions, 3 deletions
@@ -373,7 +373,6 @@ KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common \ -Werror-implicit-function-declaration \ -Wno-format-security \ - -fno-delete-null-pointer-checks \ -std=gnu89 -Werror=format \ -Werror=int-to-pointer-cast -Werror=pointer-to-int-cast @@ -577,6 +576,11 @@ endif # $(dot-config) # Defaults to vmlinux, but the arch makefile usually adds further targets all: vmlinux +include $(srctree)/arch/$(SRCARCH)/Makefile + +KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) + + KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) # Disable unused-constant-variable warnings @@ -594,8 +598,6 @@ else KBUILD_CFLAGS += -O2 endif -include $(srctree)/arch/$(SRCARCH)/Makefile - ifdef CONFIG_READABLE_ASM # Disable optimizations that make assembler listings hard to read. # reorder blocks reorders the control in the function |