build/autoconf/lto.m4@6474c204b198 (annotated)
build/autoconf/lto.m4
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | dnl This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | dnl License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | dnl file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| michael@0 | 4 | |
| michael@0 | 5 | dnl check if the build is using lto. This is really primitive and only detects llvm based |
| michael@0 | 6 | dnl compilers right now. |
| michael@0 | 7 | AC_DEFUN([MOZ_DOING_LTO], |
| michael@0 | 8 | [ |
| michael@0 | 9 | cat > conftest.c <<EOF |
| michael@0 | 10 | int foo = 1; |
| michael@0 | 11 | EOF |
| michael@0 | 12 | $1=no |
| michael@0 | 13 | if ${CC-cc} ${CFLAGS} -S conftest.c -o conftest.s >/dev/null 2>&1; then |
| michael@0 | 14 | if grep '^target triple =' conftest.s; then |
| michael@0 | 15 | $1=yes |
| michael@0 | 16 | fi |
| michael@0 | 17 | fi |
| michael@0 | 18 | rm -f conftest.[cs] |
| michael@0 | 19 | ]) |
