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| author | Chong Yidong <cyd@stupidchicken.com> | 2010-05-02 21:42:50 -0400 |
|---|---|---|
| committer | Chong Yidong <cyd@stupidchicken.com> | 2010-05-02 21:42:50 -0400 |
| commit | bcb106ad5fd68c5d34994363945267e06f6b7d8d (patch) | |
| tree | a1be4069508c3404c8c58756e57154748be65e5d /configure.in | |
| parent | 0a32f71372a872ddf73a4bd3ade1df0a233cdde1 (diff) | |
| download | emacs-bcb106ad5fd68c5d34994363945267e06f6b7d8d.tar.gz | |
Add check for buggy version of GCC (Bug#6031).
* configure.in: Add check for buggy version of GCC (Bug#6031).
* configure: Regenerate
* etc/NEWS: Minor tweak to problem description.
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 2315c267052..9069895508d 100644 --- a/configure.in +++ b/configure.in @@ -2600,6 +2600,14 @@ dnl Fixme: Use AC_FUNC_MEMCMP since memcmp is used. (Needs libobj replacement.) CFLAGS="$REAL_CFLAGS" CPPFLAGS="$REAL_CPPFLAGS" +## Hack to detect a buggy GCC version. +if test "x$GCC" = xyes \ + && test x"`$CC --version 2> /dev/null | grep 'gcc.* 4.5.0'`" != x \ + && test x"`echo $CFLAGS | grep '\-O@<:@23@:>@'`" != x \ + && test x"`echo $CFLAGS | grep '\-fno-optimize-sibling-calls'`" = x; then + AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS'.]) +fi + #### Find out which version of Emacs this is. [version=`grep 'defconst[ ]*emacs-version' ${srcdir}/lisp/version.el \ | sed -e 's/^[^"]*"\([^"]*\)".*$/\1/'`] |