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-rw-r--r--configure.in40
1 files changed, 40 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index 3f810bd1a8..d0659bf478 100644
--- a/configure.in
+++ b/configure.in
@@ -500,6 +500,35 @@ if test $libc_cv_need_minus_P = yes; then
asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
fi
+# gcc 2.7.x has a bug where if -pipe is set, the assembler will always
+# be told to read stdin. This causes the compiler to hang when fed an
+# .s file.
+if test $ac_cv_prog_gcc = yes; then
+ case `${CC-cc} -v 2>&1` in
+ *2.7*)
+ # We must check this even if -pipe is not given here, because the user
+ # might do `make CFLAGS=-pipe'.
+ AC_CACHE_CHECK(for gcc 2.7.x -pipe bug, libc_cv_gcc_pipe_bug, [dnl
+ cat >conftest.s <<EOF
+foo:
+EOF
+ if ${CC-cc} -pipe -c conftest.s <conftest.s 2>/dev/null; then
+ libc_cv_gcc_pipe_bug=no
+ else
+ libc_cv_gcc_pipe_bug=yes
+ fi
+ rm -f conftest*])
+ if test $libc_cv_gcc_pipe_bug = yes; then
+ makeCC="${CC-cc} -B\$(common-objpfx)"
+ makeCFLAGS=$CFLAGS
+ CFLAGS=`echo $CFLAGS |sed 's/-pipe//'`
+ fi;;
+ *) libc_cv_gcc_pipe_bug=no;;
+ esac
+else
+ libc_cv_gcc_pipe_bug=no
+fi
+
AC_CACHE_CHECK(for assembler global-symbol directive,
libc_cv_asm_global_directive, [dnl
libc_cv_asm_global_directive=UNKNOWN
@@ -958,5 +987,16 @@ fi
VERSION=`sed -e 's/^#define VERSION "\([^"]*\)"/\1/p' -e d < $srcdir/version.h`
AC_SUBST(VERSION)
+if test $libc_cv_gcc_pipe_bug = yes; then
+ realCC=$CC
+ CC=$makeCC
+ CFLAGS=$makeCFLAGS
+fi
+AC_OUTPUT_COMMANDS([
+if test "$realCC"; then
+ sed -e 's/%{pipe:-}/%|/g' `$realCC -print-file-name=specs` >specsT
+ mv specsT specs
+fi], [realCC=$realCC])
+
AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, ,
[echo '$config_vars' >> config.make; test -d bits || mkdir bits])