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| author | Roland McGrath <roland@hack.frob.com> | 2014-07-03 21:46:59 -0700 |
|---|---|---|
| committer | Roland McGrath <roland@hack.frob.com> | 2014-07-03 21:46:59 -0700 |
| commit | 78b984ae2c015997be860b0eedc880691d6620cf (patch) | |
| tree | b82690bbedc889f9634499d56464dde0ce2b1b68 /sysdeps/nptl/configure.ac | |
| parent | 2d5976a58069dda271d81fdcec36de13345d77ac (diff) | |
| download | glibc-78b984ae2c015997be860b0eedc880691d6620cf.tar.gz glibc-78b984ae2c015997be860b0eedc880691d6620cf.tar.xz glibc-78b984ae2c015997be860b0eedc880691d6620cf.zip | |
Fix unwind.h configure check for bare environment.
Diffstat (limited to 'sysdeps/nptl/configure.ac')
| -rw-r--r-- | sysdeps/nptl/configure.ac | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/nptl/configure.ac b/sysdeps/nptl/configure.ac index ab9d5e624a..58032155cd 100644 --- a/sysdeps/nptl/configure.ac +++ b/sysdeps/nptl/configure.ac @@ -14,11 +14,17 @@ dnl Iff <unwind.h> is available, make sure it is the right one and it dnl contains struct _Unwind_Exception. AC_CACHE_CHECK(dnl for forced unwind support, libc_cv_forced_unwind, [dnl +old_CPPFLAGS="$CPPFLAGS" +# Without inhibit_libc #define'd, GCC's unwind.h (at least for ia64) +# will try to include <stdlib.h>, which doesn't exist yet if we're +# building libc in a bare environment. +CPPFLAGS="$CPPFLAGS -Dinhibit_libc=1" AC_TRY_COMPILE([#include <unwind.h>], [ struct _Unwind_Exception exc; struct _Unwind_Context *context; _Unwind_GetCFA (context)], -libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)]) +libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no) +CPPFLAGS="$old_CPPFLAGS"]) if test $libc_cv_forced_unwind = yes; then AC_DEFINE(HAVE_FORCED_UNWIND) dnl Check for C cleanup handling. |