diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 40 |
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]) |