path: root/Makefile
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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-15 14:06:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-15 14:06:38 -0800
commit762fb1ddd561aac5b14afac19287672b99242811 (patch)
treecd52819d17e3d73d18f8b45cbcf602a731c1d420 /Makefile
parentMerge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming (diff)
parentkallsyms: Revert back to 128 max symbol length (diff)
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild changes from Michal Marek: - LTO fixes, but the kallsyms part had to be reverted - Pass -Werror=implicit-int and -Werror=strict-prototypes to the compiler by default - snprintf fix in modpost - remove GREP_OPTIONS from the environment to be immune against exotic grep option settings * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kallsyms: Revert back to 128 max symbol length Kbuild: Ignore GREP_OPTIONS env variable scripts: kallsyms: Use %zu to print 'size_t' scripts/bloat-o-meter: use .startswith rather than fragile slicing scripts/bloat-o-meter: ignore changes in the size of linux_banner kbuild: replace unbounded sprintf call in modpost kbuild, bloat-o-meter: fix static detection Kbuild: Handle longer symbols in kallsyms.c kbuild: Increase kallsyms max symbol length Makefile: enable -Werror=implicit-int and -Werror=strict-prototypes by default
Diffstat (limited to 'Makefile')
1 files changed, 9 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 606a66cdcdb8..920ad07180c9 100644
--- a/Makefile
+++ b/Makefile
@@ -22,6 +22,9 @@ LC_COLLATE=C
+# Avoid interference with shell env settings
+unexport GREP_OPTIONS
# We are using a recursive build, so we need to do a little thinking
# to get the ordering right.
@@ -659,6 +662,12 @@ KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
# conserve stack if available
KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
+# disallow errors like 'EXPORT_GPL(foo);' with missing header
+KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
+# require functions to have arguments in prototypes, not empty 'int foo()'
+KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
# use the deterministic mode of AR if available
KBUILD_ARFLAGS := $(call ar-option,D)