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| author | Paul Eggert <eggert@cs.ucla.edu> | 2012-07-06 14:29:50 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2012-07-06 14:29:50 -0700 |
| commit | f5c08e17670cfda756af96c569efa48324b43908 (patch) | |
| tree | 3bc1549e247c201841b114e6aab640ba402bd64a /configure.in | |
| parent | fee5959dd8b389bc222618a35b042a92a1358c21 (diff) | |
| download | emacs-f5c08e17670cfda756af96c569efa48324b43908.tar.gz | |
* configure.in: Document --enable-gcc-warnings better.
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/configure.in b/configure.in index 1a43aed7540..09551ae58e9 100644 --- a/configure.in +++ b/configure.in @@ -575,7 +575,9 @@ gl_EARLY AC_ARG_ENABLE([gcc-warnings], [AS_HELP_STRING([--enable-gcc-warnings], - [turn on lots of GCC warnings (for developers)])], + [turn on lots of GCC warnings. This is intended for + developers, and may generate false alarms when used + with older or non-GNU development tools.])], [case $enableval in yes|no) ;; *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;; @@ -597,7 +599,7 @@ if test "${enableval}" != "no"; then LTO="-flto=$CPUS" else LTO="-flto" - fi + fi old_CFLAGS=$CFLAGS CFLAGS="$CFLAGS $LTO" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], |