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glibc/sysdeps/unix/sysv/linux/x86_64
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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
..
64 Add narrowing add functions. 2018-02-10 02:08:43 +00:00
x32 Add narrowing add functions. 2018-02-10 02:08:43 +00:00
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lowlevellock.h Define GEN_AS_CONST_HEADERS when generating header files [BZ #22792] 2018-02-23 11:29:39 -08:00
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