Error: invalid identifier for ".ifdef"

glibc-2.11编译报错
../sysdeps/i386/fpu/s_frexp.S: Assembler messages:
../sysdeps/i386/fpu/s_frexp.S:66: Error: invalid identifier for ".ifdef"
../sysdeps/i386/fpu/s_frexp.S:66: Error: junk at end of line, first unrecognized character is `1' ../sysdeps/i386/fpu/s_frexp.S:66: Error: junk at end of line, first unrecognized character is `1' ../sysdeps/i386/fpu/s_frexp.S:66: Error: junk at end of line, first unrecognized character is `1'
../sysdeps/i386/fpu/s_frexp.S:66: Error: unrecognized symbol type ""
../sysdeps/i386/fpu/s_frexp.S:66: Error: junk at end of line, first unrecognized character is `1' ../sysdeps/i386/fpu/s_frexp.S:66: Error: junk at end of line, first unrecognized character is `1' ../sysdeps/i386/fpu/s_frexp.S:66: Error: expected comma after name `' in .size directive
../sysdeps/i386/fpu/s_frexp.S:66: Error: ".endif" without ".if"
../sysdeps/i386/fpu/s_frexp.S:66: Error: junk `.get_pc_thunk.dx' after expression

解决方法见：http://www.eglibc.org/archives/patches/msg00073.html
Index: sysdeps/unix/sysv/linux/i386/sysdep.h
===================================================================
--- sysdeps/unix/sysv/linux/i386/sysdep.h (revision 1469)
+++ sysdeps/unix/sysv/linux/i386/sysdep.h (working copy)
@@ -29,6 +29,10 @@
#include <dl-sysdep.h>
#include <tls.h>

+#if defined __i686 && defined __ASSEMBLER__
+#undef __i686
+#define __i686 __i686
+#endif

/* For Linux we can use the system call table in the header file
/usr/include/asm/unistd.h
Index: nptl/sysdeps/pthread/pt-initfini.c
===================================================================
--- nptl/sysdeps/pthread/pt-initfini.c (revision 1469)
+++ nptl/sysdeps/pthread/pt-initfini.c (working copy)
@@ -45,6 +45,11 @@
/* Embed an #include to pull in the alignment and .end directives. */
asm ("\n#include \"defs.h\"");

+asm ("\n#if defined __i686 && defined __ASSEMBLER__");
+asm ("\n#undef __i686");
+asm ("\n#define __i686 __i686");
+asm ("\n#endif");
+
/* The initial common code ends here. */
asm ("\n/*@HEADER_ENDS*/");
#Summary