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Link libunwind to libgcc_s rather than libgcc

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For some architectures, -lgcc and -lgcc_s are not equivalent. On ARM for
example, libgcc_s.so.1 contains some symbols needed by libunwind which
are not present in libgcc.

This causes the following link error when building the X.Org X server
with libunwind support:

	  CCLD     Xorg
	/usr/lib/libunwind.so: undefined reference to `__aeabi_unwind_cpp_pr0'
	/usr/lib/libunwind.so: undefined reference to `__aeabi_unwind_cpp_pr1'

Linking against libgcc_s explicitly solves this problem.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-06-27 08:40:33 +02:00 committed by Arun Sharma
parent 65ac867416
commit f1684379df
1 changed files with 1 additions and 1 deletions
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2
configure.ac
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@ -307,7 +307,7 @@ else
fi fi
if test x$GCC = xyes -a x$intel_compiler != xyes -a x$qcc_compiler != xyes; then if test x$GCC = xyes -a x$intel_compiler != xyes -a x$qcc_compiler != xyes; then
LIBCRTS="-lgcc" LIBCRTS="-lgcc_s"
fi fi
AC_MSG_CHECKING([for __builtin___clear_cache]) AC_MSG_CHECKING([for __builtin___clear_cache])