glibc/sysdeps/unix
H.J. Lu f5d1f629c6 Define GEN_AS_CONST_HEADERS when generating header files [BZ #22792]
Glibc build generates header files to define constants from special .sym
files.  If a .sym file includes the same header file which it generates,
it leads to circular dependency which may lead to build hang on a
many-core machine.  Define GEN_AS_CONST_HEADERS when generating header
files to avoid circular dependency.

<tcb-offsets.h> is needed for i686 and it isn't needed for x86-64 at
least since glibc 2.23.

Tested on i686 and x86-64.

	[BZ #22792]
	* Makerules ($(common-objpfx)%.h): Pass -DGEN_AS_CONST_HEADERS
	to $(CC).
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Include
	<tcb-offsets.h> only if GEN_AS_CONST_HEADERS isn't defined.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Don't include
	<tcb-offsets.h>.
2018-02-23 11:29:39 -08:00
..
alpha
arm
bsd
i386
inet
mips
powerpc
sh
sysv/linux Define GEN_AS_CONST_HEADERS when generating header files [BZ #22792] 2018-02-23 11:29:39 -08:00
x86_64
Implies
Makefile
clock_gettime.c
clock_nanosleep.c
clock_settime.c
confstr.h
get_child_max.c
getlogin.c
getlogin_r.c
getpagesize.c
grantpt.c
ifreq.c
make-syscalls.sh
s-proto-cancel.S
s-proto.S
setxid.h
sockatmark.c
stime.c
syscall-template.S
syscall.S
syscalls.list
sysdep.h