build/autoconf/lto.m4

Thu, 15 Jan 2015 21:03:48 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 15 Jan 2015 21:03:48 +0100
branch
TOR_BUG_9701
changeset 11
deefc01c0e14
permissions
-rw-r--r--

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

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 ])

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