The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/build/autoconf/lto.m4	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,19 @@
     1.4 +dnl This Source Code Form is subject to the terms of the Mozilla Public
     1.5 +dnl License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 +dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
     1.7 +
     1.8 +dnl check if the build is using lto. This is really primitive and only detects llvm based
     1.9 +dnl compilers right now.
    1.10 +AC_DEFUN([MOZ_DOING_LTO],
    1.11 +[
    1.12 +  cat > conftest.c <<EOF
    1.13 +                  int foo = 1;
    1.14 +EOF
    1.15 +  $1=no
    1.16 +  if ${CC-cc} ${CFLAGS} -S conftest.c -o conftest.s >/dev/null 2>&1; then
    1.17 +    if grep '^target triple =' conftest.s; then
    1.18 +      $1=yes
    1.19 +    fi
    1.20 +  fi
    1.21 +  rm -f conftest.[cs]
    1.22 +])