diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index 6af4be17a82..bf5fe3ad832 100644 --- a/configure.ac +++ b/configure.ac @@ -1786,9 +1786,11 @@ to specify its location.]) # Flags needed for libelf. AC_SUBST(libelflibs) AC_SUBST(libelfinc) + # ELF platforms build the lto-plugin when GOLD is in use. + build_lto_plugin=${ENABLE_GOLD} fi],[if test x"$default_enable_lto" = x"yes" ; then case $target in - *-apple-darwin*) ;; + *-apple-darwin* | *-cygwin* | *-mingw*) ;; # On other non-ELF platforms, LTO must be explicitly enabled. *) enable_lto=no ;; esac @@ -1799,13 +1801,18 @@ fi],[if test x"$default_enable_lto" = x"yes" ; then # warn during gcc/ subconfigure; unless you're bootstrapping with # -flto it won't be needed until after installation anyway. case $target in - *-cygwin*|*-mingw* | *-apple-darwin*) ;; + *-cygwin* | *-mingw* | *-apple-darwin*) ;; *) if test x"$enable_lto" = x"yes"; then AC_MSG_ERROR([LTO support is not enabled for this target.]) fi ;; esac fi + # Among non-ELF, only Windows platforms support the lto-plugin so far. + case $target in + *-cygwin* | *-mingw*) build_lto_plugin=yes ;; + *) ;; + esac default_enable_lto=no]) @@ -1884,7 +1891,7 @@ if test -d ${srcdir}/gcc; then *,lto,*) ;; *) enable_languages="${enable_languages},lto" ;; esac - if test "${ENABLE_GOLD}" = "yes" ; then + if test "${build_lto_plugin}" = "yes" ; then configdirs="$configdirs lto-plugin" extra_host_libiberty_configure_flags=--enable-shared fi |