git.m6w6.name Git - m6w6/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. C99 is assumed.
  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 # The Following flags are not checked for
  49 # -Wdeclaration-after-statement is counter to C99
  50
  51 #serial 1
  52
  53 AC_DEFUN([AX_HARDEN_COMPILER_FLAGS],
  54 [AC_REQUIRE([AX_APPEND_COMPILE_FLAGS])
  55 AC_REQUIRE([AX_CHECK_LINK_FLAG])
  56 AC_LANG_PUSH([C])
  57 AX_APPEND_COMPILE_FLAGS([-O2])
  58 AX_APPEND_COMPILE_FLAGS([-Werror])
  59 AX_APPEND_COMPILE_FLAGS([-Wall])
  60 AX_APPEND_COMPILE_FLAGS([-Wextra])
  61 AX_APPEND_COMPILE_FLAGS([-std=c99])
  62 AX_APPEND_COMPILE_FLAGS([-Wbad-function-cast])
  63 AX_APPEND_COMPILE_FLAGS([-Wmissing-prototypes])
  64 AX_APPEND_COMPILE_FLAGS([-Wnested-externs])
  65 AX_APPEND_COMPILE_FLAGS([-Wold-style-definition])
  66 AX_APPEND_COMPILE_FLAGS([-Woverride-init])
  67 AX_APPEND_COMPILE_FLAGS([-Wstrict-prototypes])
  68 AC_LANG_POP
  69 AC_LANG_PUSH([C++])
  70 AX_APPEND_COMPILE_FLAGS([-O2])
  71 AX_APPEND_COMPILE_FLAGS([-Werror])
  72 AX_APPEND_COMPILE_FLAGS([-Wall])
  73 AX_APPEND_COMPILE_FLAGS([-Wextra])
  74 dnl AX_APPEND_COMPILE_FLAGS([-std=c++11])
  75 AX_APPEND_COMPILE_FLAGS([-Wpragmas])
  76 dnl AX_APPEND_COMPILE_FLAGS([-pedantic])
  77 AX_APPEND_COMPILE_FLAGS([--paramssp-buffer-size=1])
  78 AX_APPEND_COMPILE_FLAGS([-D_FORTIFY_SOURCE=2])
  79 AX_APPEND_COMPILE_FLAGS([-Waddress])
  80 AX_APPEND_COMPILE_FLAGS([-Warray-bounds])
  81 AX_APPEND_COMPILE_FLAGS([-Wchar-subscripts])
  82 AX_APPEND_COMPILE_FLAGS([-Wcomment])
  83 AX_APPEND_COMPILE_FLAGS([-Wctor-dtor-privacy])
  84 AX_APPEND_COMPILE_FLAGS([-Wfloat-equal])
  85 AX_APPEND_COMPILE_FLAGS([-Wformat=2])
  86 dnl AX_APPEND_COMPILE_FLAGS([-Wlong-long])
  87 AX_APPEND_COMPILE_FLAGS([-Wmaybe-uninitialized])
  88 AX_APPEND_COMPILE_FLAGS([-Wmissing-field-initializers])
  89 AX_APPEND_COMPILE_FLAGS([-Wmissing-noreturn])
  90 AX_APPEND_COMPILE_FLAGS([-Wnon-virtual-dtor])
  91 AX_APPEND_COMPILE_FLAGS([-Wnormalized=id])
  92 AX_APPEND_COMPILE_FLAGS([-Woverloaded-virtual])
  93 AX_APPEND_COMPILE_FLAGS([-Wpointer-arith])
  94 AX_APPEND_COMPILE_FLAGS([-Wredundant-decls])
  95 AX_APPEND_COMPILE_FLAGS([-Wshadow])
  96 AX_APPEND_COMPILE_FLAGS([-Wshorten-64-to-32])
  97 AX_APPEND_COMPILE_FLAGS([-Wsign-compare])
  98 AX_APPEND_COMPILE_FLAGS([-Wstack-protector])
  99 AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow=1])
 100 AX_APPEND_COMPILE_FLAGS([-Wswitch-enum])
 101 AX_APPEND_COMPILE_FLAGS([-Wundef])
 102 AX_APPEND_COMPILE_FLAGS([-Wunused-result])
 103 AX_APPEND_COMPILE_FLAGS([-Wunused-variable])
 104 AX_APPEND_COMPILE_FLAGS([-Wwrite-strings])
 105 AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all])
 106 AX_APPEND_COMPILE_FLAGS([-fstack-protector-all])
 107 AX_APPEND_COMPILE_FLAGS([-fwrapv])
 108 AX_APPEND_COMPILE_FLAGS([-ggdb])
 109 AX_CHECK_LINK_FLAG([-Werror])
 110 AX_CHECK_LINK_FLAG([-z relro -z now])
 111 AC_LANG_POP
 112 ])dnl AX_HARDEN_COMPILER_FLAGS