git.m6w6.name Git - awesomized/libmemcached/blob - m4/ax_harden_compiler_flags.m4

   1 # ===========================================================================
   2 #      http://www.gnu.org/software/autoconf-archive/ax_append_flag.html
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_HARDEN_COMPILER_FLAGS
   8 #
   9 # DESCRIPTION
  10 #
  11 #   Any compiler flag that "hardens" or tests code.
  12 #
  13 #   NOTE: Implementation based on AX_APPEND_FLAG.
  14 #
  15 # LICENSE
  16 #
  17 #  Copyright (C) 2012 Brian Aker
  18 #  All rights reserved.
  19 #
  20 #  Redistribution and use in source and binary forms, with or without
  21 #  modification, are permitted provided that the following conditions are
  22 #  met:
  23 #
  24 #      * Redistributions of source code must retain the above copyright
  25 #  notice, this list of conditions and the following disclaimer.
  26 #
  27 #      * Redistributions in binary form must reproduce the above
  28 #  copyright notice, this list of conditions and the following disclaimer
  29 #  in the documentation and/or other materials provided with the
  30 #  distribution.
  31 #
  32 #      * The names of its contributors may not be used to endorse or
  33 #  promote products derived from this software without specific prior
  34 #  written permission.
  35 #
  36 #  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  37 #  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  38 #  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  39 #  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  40 #  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41 #  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  42 #  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  43 #  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  44 #  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  45 #  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  46 #  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  47
  48 #serial 1
  49
  50 AC_DEFUN([AX_HARDEN_COMPILER_FLAGS],
  51 [AC_REQUIRE([AX_CHECK_COMPILE_FLAG])
  52 AC_REQUIRE([AX_APPEND_FLAG])
  53 AC_REQUIRE([AX_CHECK_LINK_FLAG])
  54 AX_APPEND_COMPILE_FLAGS([-O2])
  55 AX_APPEND_COMPILE_FLAGS([-Werror])
  56 AX_APPEND_COMPILE_FLAGS([-Wall])
  57 AX_APPEND_COMPILE_FLAGS([-Wextra])
  58 AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized])
  59 AX_APPEND_COMPILE_FLAGS([-Wsign-compare])
  60 AX_APPEND_COMPILE_FLAGS([-Wunused-result])
  61 AX_APPEND_COMPILE_FLAGS([-Wunused-variable])
  62 AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all])
  63 AX_APPEND_COMPILE_FLAGS([-fstack-protector-all])
  64 AX_APPEND_COMPILE_FLAGS([-ggdb])
  65 AX_APPEND_COMPILE_FLAGS([-fstack-protector-all])
  66 AX_APPEND_COMPILE_FLAGS([-Wstack-protector])
  67 AX_APPEND_COMPILE_FLAGS([-fwrapv])
  68 AX_APPEND_COMPILE_FLAGS([-D_FORTIFY_SOURCE=2])
  69 AX_APPEND_COMPILE_FLAGS([--param],[ssp-buffer-size=1])
  70 AX_CHECK_LINK_FLAG([-Werror])
  71 AX_CHECK_LINK_FLAG([-z relro -z now])
  72 ])dnl AX_HARDEN_COMPILER_FLAGS