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bpo-31354: Let configure --with-lto work on all builds

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Allow configure --with-lto to apply to all builds, not just profile-opt builds.

Whether this is actually useful or not must be determined by the person
building CPython using their own toolchain.

My own quick test on x86_64 Debian 9 (gcc 6.3, binutils 2.28) seemed
to suggest that it wasn't, but I expect better toolchains can or will exist
at some point.  The point is to allow it at all.
This commit is contained in:
octaviansoldea 2017-09-08 12:14:33 -07:00 • committed by Gregory P. Smith
parent b3ad0e5127
commit 4c81401b3a
4 changed files with 10 additions and 8 deletions
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5
configure.ac
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@ -1282,9 +1282,8 @@ else
fi
# Enable LTO flags
AC_SUBST(LTOFLAGS)
AC_MSG_CHECKING(for --with-lto)
AC_ARG_WITH(lto, AS_HELP_STRING([--with-lto], [Enable Link Time Optimization in PGO builds. Disabled by default.]),
AC_ARG_WITH(lto, AS_HELP_STRING([--with-lto], [Enable Link Time Optimization in any build. Disabled by default.]),
[
if test "$withval" != no
then
@ -1319,6 +1318,8 @@ if test "$Py_LTO" = 'true' ; then
esac
;;
esac
CFLAGS="$CFLAGS $LTOFLAGS"
LDFLAGS="$LDFLAGS $LTOFLAGS"
fi
# Enable PGO flags.