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| author | Dave Korn <dave.korn.cygwin@gmail.com> | 2010-10-07 20:50:02 +0000 |
|---|---|---|
| committer | Dave Korn <dave.korn.cygwin@gmail.com> | 2010-10-07 20:50:02 +0000 |
| commit | 1a91b8c0ac168f498576bd8833e8d4a7197fce57 (patch) | |
| tree | 205192471ff209b6fbd38eb7a7a746c6e1890578 /configure.ac | |
| parent | 327e1afced114e2fc10ac3936e9003a25335fbda (diff) | |
| download | cygnal-1a91b8c0ac168f498576bd8833e8d4a7197fce57.tar.gz cygnal-1a91b8c0ac168f498576bd8833e8d4a7197fce57.tar.bz2 cygnal-1a91b8c0ac168f498576bd8833e8d4a7197fce57.zip | |
* configure.ac (build_lto_plugin): New shell variable.
(--enable-lto): Turn on by default for all non-ELF platforms that
have had LTO support added so far. Set build_lto_plugin appropriately
for both ELF and non-ELF.
(configdirs): Add lto-plugin or not based on build_lto_plugin.
* configure: Regenerate.
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 6af4be17a..bf5fe3ad8 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 |