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| author | Ian Lance Taylor <iant@google.com> | 2012-10-24 21:09:55 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2012-10-24 21:09:55 +0000 |
| commit | 32061319f77b80e9a52855fa990856f6bfce682b (patch) | |
| tree | c53daad197d3a091ed98e30d079c0242bd7c1e81 /libbacktrace/configure | |
| parent | 45c29893a678fe93a54ce82718a7d3839d69b8c4 (diff) | |
| download | gcc-32061319f77b80e9a52855fa990856f6bfce682b.zip gcc-32061319f77b80e9a52855fa990856f6bfce682b.tar.gz gcc-32061319f77b80e9a52855fa990856f6bfce682b.tar.bz2 | |
re PR target/55061 (libbacktrace build fails during bootstrap on powerpc-apple-darwin9)
PR target/55061
* configure.ac: Check whether -funwind-tables option works.
* configure: Rebuild.
From-SVN: r192782
Diffstat (limited to 'libbacktrace/configure')
| -rwxr-xr-x | libbacktrace/configure | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/libbacktrace/configure b/libbacktrace/configure index 9a88e8e4..e279737 100755 --- a/libbacktrace/configure +++ b/libbacktrace/configure @@ -11490,8 +11490,40 @@ fi EXTRA_FLAGS= -if test "x$GCC" = "xyes"; then +if test -n "${with_target_subdir}"; then EXTRA_FLAGS=-funwind-tables +else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -funwind-tables option" >&5 +$as_echo_n "checking for -funwind-tables option... " >&6; } +if test "${libbacktrace_cv_c_unwind_tables+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + CFLAGS_hold="$CFLAGS" + CFLAGS="$CFLAGS -funwind-tables" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +static int f() { return 0; } +int +main () +{ +return f(); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + libbacktrace_cv_c_unwind_tables=yes +else + libbacktrace_cv_c_unwind_tables=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + CFLAGS="$CFLAGS_hold" +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_c_unwind_tables" >&5 +$as_echo "$libbacktrace_cv_c_unwind_tables" >&6; } + if test "$libbacktrace_cv_c_unwind_tables" = "yes"; then + EXTRA_FLAGS=-funwind-tables + fi fi |