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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-11 05:11:05 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-11 05:11:05 +0200 |
commit | 593043d35ddff8ab033546c2a89bb1d4080d03e1 (patch) | |
tree | 81284ecf3ce7dc79e18401d2b76c414556e7f2a1 /scripts/Makefile.lib | |
parent | Merge tag 'rtc-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/abellon... (diff) | |
parent | kbuild: dtbinst: remove unnecessary __dtbs_install_prep target (diff) | |
download | linux-593043d35ddff8ab033546c2a89bb1d4080d03e1.tar.xz linux-593043d35ddff8ab033546c2a89bb1d4080d03e1.zip |
Merge tag 'kbuild-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- improve Clang support
- clean up various Makefiles
- improve build log visibility (objtool, alpha, ia64)
- improve compiler flag evaluation for better build performance
- fix GCC version-dependent warning
- fix genksyms
* tag 'kbuild-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (23 commits)
kbuild: dtbinst: remove unnecessary __dtbs_install_prep target
ia64: beatify build log for gate.so and gate-syms.o
alpha: make short build log available for division routines
alpha: merge build rules of division routines
alpha: add $(src)/ rather than $(obj)/ to make source file path
Makefile: evaluate LDFLAGS_BUILD_ID only once
objtool: make it visible in make V=1 output
kbuild: clang: add -no-integrated-as to KBUILD_[AC]FLAGS
kbuild: Add support to generate LLVM assembly files
kbuild: Add better clang cross build support
kbuild: drop -Wno-unknown-warning-option from clang options
kbuild: fix asm-offset generation to work with clang
kbuild: consolidate redundant sed script ASM offset generation
frv: Use OFFSET macro in DEF_*REG()
kbuild: avoid conflict between -ffunction-sections and -pg on gcc-4.7
kbuild: Consolidate header generation from ASM offset information
kbuild: use -Oz instead of -Os when using clang
kbuild, LLVMLinux: Add -Werror to cc-option to support clang
Kbuild: make designated_init attribute fatal
kbuild: drop unneeded patterns '.*.orig' and '.*.rej' from distclean
...
Diffstat (limited to 'scripts/Makefile.lib')
-rw-r--r-- | scripts/Makefile.lib | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index c9f975ab9840..6dc1eda13b8e 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -420,3 +420,34 @@ quiet_cmd_xzmisc = XZMISC $@ cmd_xzmisc = (cat $(filter-out FORCE,$^) | \ xz --check=crc32 --lzma2=dict=1MiB) > $@ || \ (rm -f $@ ; false) + +# ASM offsets +# --------------------------------------------------------------------------- + +# Default sed regexp - multiline due to syntax constraints +# +# Use [:space:] because LLVM's integrated assembler inserts <tab> around +# the .ascii directive whereas GCC keeps the <space> as-is. +define sed-offsets + 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ + /^->/{s:->#\(.*\):/* \1 */:; \ + s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ + s:->::; p;}' +endef + +# Use filechk to avoid rebuilds when a header changes, but the resulting file +# does not +define filechk_offsets + (set -e; \ + echo "#ifndef $2"; \ + echo "#define $2"; \ + echo "/*"; \ + echo " * DO NOT MODIFY."; \ + echo " *"; \ + echo " * This file was generated by Kbuild"; \ + echo " */"; \ + echo ""; \ + sed -ne $(sed-offsets); \ + echo ""; \ + echo "#endif" ) +endef |