diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/Makefile')
| -rw-r--r-- | sysdeps/unix/sysv/linux/Makefile | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 7a73ded547..2bc194384a 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -23,13 +23,18 @@ install-others += $(inst_includedir)/bits/syscall.h # Generate the list of SYS_* macros for the system calls (__NR_* macros). $(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/sys/syscall.h rm -f $(@:.h=.d) - echo > $(@:.d=.h).new \ - '/* Generated at libc build time from kernel syscall list. */' - SUNPRO_DEPENDENCIES='$(@:.h=.d) $(patsubst $(objpfx)%,$$(objpfx)%,\ - $(@:.d=.h) $(@:.h=.d))' \ - $(CC) -E -x c $< -D_LIBC -dM | \ - sed -n >> $(@:.d=.h).new \ - 's@^#define __NR_\([^ ]*\) .*$$@#define SYS_\1 __NR_\1@p' + { \ + echo '/* Generated at libc build time from kernel syscall list. */';\ + echo ''; \ + echo '#ifndef _SYSCALL_H'; \ + echo '# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."'; \ + echo '#endif'; \ + echo ''; \ + SUNPRO_DEPENDENCIES='$(@:.h=.d) $(patsubst $(objpfx)%,$$(objpfx)%,\ + $(@:.d=.h) $(@:.h=.d))' \ + $(CC) -E -x c $< -D_LIBC -dM | \ + sed -n 's@^#define __NR_\([^ ]*\) .*$$@#define SYS_\1 __NR_\1@p'; \ + } > $(@:.d=.h).new mv -f $(@:.d=.h).new $(@:.d=.h) $(inst_includedir)/bits/syscall.h: $(objpfx)syscall-list.h |