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| author | jan.nijtmans <nijtmans@users.sourceforge.net> | 2021-01-21 15:08:21 (GMT) |
|---|---|---|
| committer | jan.nijtmans <nijtmans@users.sourceforge.net> | 2021-01-21 15:08:21 (GMT) |
| commit | fcee3d36fd756683f04be4a52137afe680009517 (patch) | |
| tree | df7d6b01081f1f0b730ffbe78c9591d8ee64bccb /unix/tcl.m4 | |
| parent | b0c8960e047e98418834bdddd879a3d1358c7607 (diff) | |
| download | tk-fcee3d36fd756683f04be4a52137afe680009517.zip tk-fcee3d36fd756683f04be4a52137afe680009517.tar.gz tk-fcee3d36fd756683f04be4a52137afe680009517.tar.bz2 | |
Compile stub library with -fno-lto. See [https://core.tcl-lang.org/thread/info/98ae20f0f5|98ae20f0f5] for the reason why.
Diffstat (limited to 'unix/tcl.m4')
| -rw-r--r-- | unix/tcl.m4 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/unix/tcl.m4 b/unix/tcl.m4 index 17c2956..4665f44 100644 --- a/unix/tcl.m4 +++ b/unix/tcl.m4 @@ -2054,6 +2054,19 @@ dnl # preprocessing tests use only CPPFLAGS. AC_DEFINE(HAVE_CAST_TO_UNION, 1, [Defined when compiler supports casting to union type.]) fi + hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fno-lto" + AC_CACHE_CHECK(for working -fno-lto, + ac_cv_nolto, + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], + [ac_cv_nolto=yes], + [ac_cv_nolto=no]) + ) + CFLAGS=$hold_cflags + if test "$ac_cv_nolto" = "yes" ; then + CFLAGS_NOLTO="-fno-lto" + else + CFLAGS_NOLTO="" + fi # FIXME: This subst was left in only because the TCL_DL_LIBS # entry in tclConfig.sh uses it. It is not clear why someone @@ -2068,6 +2081,7 @@ dnl # preprocessing tests use only CPPFLAGS. AC_SUBST(CFLAGS_DEBUG) AC_SUBST(CFLAGS_OPTIMIZE) AC_SUBST(CFLAGS_WARNING) + AC_SUBST(CFLAGS_NOLTO) AC_SUBST(LDFLAGS) AC_SUBST(LDFLAGS_DEBUG) |