forked from Minki/linux
c93a0368aa
header-test-y does not work with headers in sub-directories.
For example, you may want to write a Makefile, like this:
include/linux/Kbuild:
header-test-y += mtd/nand.h
This entry will create a wrapper include/linux/mtd/nand.hdrtest.c
with the following content:
#include "mtd/nand.h"
To make this work, we need to add $(srctree)/include/linux to the
header search path. It would be tedious to add ccflags-y.
Instead, we could change the *.hdrtest.c rule to wrap:
#include "nand.h"
This works for in-tree build since #include "..." searches in the
relative path from the header with this directive. For O=... build,
we need to add $(srctree)/include/linux/mtd to the header search path,
which will be even more tedious.
After all, I thought it would be handier to compile headers directly
without creating wrappers.
I added a new build rule to compile %.h into %.h.s
The target is %.h.s instead of %.h.o because it is slightly faster.
Also, as for GCC, an empty assembly is smaller than an empty object.
I wrote the build rule:
$(CC) $(c_flags) -S -o $@ -x c /dev/null -include $<
instead of:
$(CC) $(c_flags) -S -o $@ -x c $<
Both work fine with GCC, but the latter is bad for Clang.
This comes down to the difference in the -Wunused-function policy.
GCC does not warn about unused 'static inline' functions at all.
Clang does not warn about the ones in included headers, but does
about the ones in the source. So, we should handle headers as
headers, not as source files.
In fact, this has been hidden since commit abb2ea7dfd ("compiler,
clang: suppress warning for unused static inline functions"), but we
should not rely on that.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Jani Nikula <jani.nikula@intel.com>
265 lines
2.6 KiB
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265 lines
2.6 KiB
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\#*#
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*.9
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.*
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.mm
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53c700_d.h
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CVS
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ChangeSet
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GPATH
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GRTAGS
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GSYMS
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GTAGS
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Image
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PENDING
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SCCS
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System.map*
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TAGS
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aconf
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af_names.h
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aic7*reg.h*
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aic7*reg_print.c*
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aic7*seq.h*
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aicasm
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aicdb.h*
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altivec*.c
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asm-offsets.h
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asm_offsets.h
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autoconf.h*
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av_permissions.h
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bbootsect
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bin2c
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binkernel.spec
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bootsect
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bounds.h
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bsetup
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btfixupprep
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build
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bvmlinux
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bzImage*
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capability_names.h
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capflags.c
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classlist.h*
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comp*.log
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compile.h*
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conf
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config
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config-*
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config.mak
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config.mak.autogen
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conmakehash
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consolemap_deftbl.c*
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cpustr.h
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crc32table.h*
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cscope.*
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defkeymap.c
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devlist.h*
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devicetable-offsets.h
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dnotify_test
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dslm
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dtc
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elf2ecoff
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elfconfig.h*
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evergreen_reg_safe.h
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fixdep
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flask.h
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fore200e_mkfirm
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fore200e_pca_fw.c*
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gconf
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gconf-cfg
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gen-devlist
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gen_crc32table
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gen_init_cpio
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generated
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genheaders
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genksyms
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*_gray256.c
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hpet_example
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hugepage-mmap
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hugepage-shm
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ihex2fw
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inat-tables.c
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initramfs_list
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int16.c
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int1.c
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int2.c
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int32.c
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int4.c
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int8.c
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kallsyms
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keywords.c
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ksym.c*
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ksym.h*
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*lex.c
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*lex.*.c
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linux
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logo_*.c
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logo_*_clut224.c
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logo_*_mono.c
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mach-types
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mach-types.h
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machtypes.h
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map
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map_hugetlb
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mconf
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mconf-cfg
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miboot*
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mk_elfconfig
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mkboot
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mkbugboot
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mkcpustr
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mkdep
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mkprep
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mkregtable
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mktables
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mktree
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mkutf8data
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modpost
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modules.builtin
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modules.builtin.modinfo
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modules.order
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modversions.h*
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nconf
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nconf-cfg
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ncscope.*
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offset.h
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oui.c*
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page-types
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parse.c
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parse.h
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patches*
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pca200e.bin
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pca200e_ecd.bin2
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perf.data
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perf.data.old
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perf-archive
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piggyback
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piggy.gzip
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piggy.S
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pnmtologo
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ppc_defs.h*
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pss_boot.h
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qconf
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qconf-cfg
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r100_reg_safe.h
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r200_reg_safe.h
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r300_reg_safe.h
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r420_reg_safe.h
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r600_reg_safe.h
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randomize_layout_hash.h
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randomize_layout_seed.h
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recordmcount
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relocs
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rlim_names.h
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rn50_reg_safe.h
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rs600_reg_safe.h
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rv515_reg_safe.h
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series
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setup
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setup.bin
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setup.elf
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sortextable
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sImage
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sm_tbl*
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split-include
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syscalltab.h
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tables.c
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tags
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test_get_len
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tftpboot.img
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timeconst.h
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times.h*
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trix_boot.h
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utsrelease.h*
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vdso-syms.lds
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vdso.lds
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vdso32-int80-syms.lds
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vdso32-syms.lds
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vdso32-syscall-syms.lds
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vdso32-sysenter-syms.lds
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vdso32.lds
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vdso32.so.dbg
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vdso64.lds
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vdso64.so.dbg
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version.h*
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vmImage
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vmlinux
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vmlinux-*
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vmlinux.aout
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vmlinux.bin.all
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vmlinux.lds
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vmlinuz
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voffset.h
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vsyscall.lds
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vsyscall_32.lds
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wanxlfw.inc
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uImage
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unifdef
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utf8data.h
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wakeup.bin
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wakeup.elf
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wakeup.lds
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zImage*
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zoffset.h
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