1
0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-12-27 07:22:07 +03:00
libvirt/m4/compiler-flags.m4
Eric Blake e7064aa6a2 build: restore operation of bit-rotted 'make cov'
'./autobuild.sh' with lcov installed discovered that our
coverage support has been bit-rotting for a while.  This
restores it back to a successful state, although I have
not yet spent any time looking through the resulting files to
look for low-hanging fruit in the unit test coverage front.

* configure.ac: Clear COMPILER_FLAGS at right place.
* Makefile.am (cov): Newer genhtml no longer likes plain -s.
* m4/compiler-flags.m4 (gl_COMPILER_FLAGS): Don't AC_SUBST
COMPILER_FLAGS; it is a shell variable for use in configure only.
* src/Makefile.am (AM_CFLAGS, AM_LDFLAGS): New variables, to make
it easier to provide global flag additions.  Use throughout, to
uniformly apply coverage flags.
* .gitignore: Globally ignore gcov output.
* daemon/.gitignore: Simplify.
* src/.gitignore: Likewise.
* tests/.gitignore: Likewise.
2010-07-29 13:41:25 -06:00

49 lines
1.7 KiB
Plaintext

# serial 4
# Find valid warning flags for the C Compiler. -*-Autoconf-*-
#
# Copyright (C) 2010 Red Hat, Inc.
# Copyright (C) 2001, 2002, 2006 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA
# Written by Jesse Thilo.
AC_DEFUN([gl_COMPILER_FLAGS],
[AC_MSG_CHECKING(whether compiler accepts $1)
ac_save_CFLAGS="$CFLAGS"
dnl Some flags are dependant, so we set all previously checked
dnl flags when testing. Except for -Werror which we have to
dnl check on its own, because some of our compiler flags cause
dnl warnings from the autoconf test program!
if test "$1" = "-Werror" ; then
CFLAGS="$CFLAGS $1"
else
CFLAGS="$CFLAGS $COMPILER_FLAGS $1"
fi
AC_TRY_LINK([], [], has_option=yes, has_option=no,)
echo 'int x;' >conftest.c
$CC $CFLAGS -c conftest.c 2>conftest.err
ret=$?
if test $ret != 0 || test -s conftest.err || test $has_option = "no"; then
AC_MSG_RESULT(no)
else
AC_MSG_RESULT(yes)
COMPILER_FLAGS="$COMPILER_FLAGS $1"
fi
CFLAGS="$ac_save_CFLAGS"
rm -f conftest*
])