Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 1 | From c2668f7f2ea82a61115b7cae56ed081b41ff5153 Mon Sep 17 00:00:00 2001 |
Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 2 | From: Khem Raj <raj.khem@gmail.com> |
| 3 | Date: Sat, 22 Apr 2017 12:34:37 -0700 |
| 4 | Subject: [PATCH] configure: Disable format-overflow if supported by gcc |
| 5 | |
| 6 | Signed-off-by: Khem Raj <raj.khem@gmail.com> |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 7 | |
Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 8 | --- |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 9 | Makefile.am | 6 +-- |
| 10 | configure.ac | 2 + |
| 11 | m4/ax_check_compile_flag.m4 | 74 +++++++++++++++++++++++++++++++++++++ |
Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 12 | 3 files changed, 79 insertions(+), 3 deletions(-) |
| 13 | create mode 100644 m4/ax_check_compile_flag.m4 |
| 14 | |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 15 | diff --git a/Makefile.am b/Makefile.am |
| 16 | index b3d6553..5607fc2 100644 |
| 17 | --- a/Makefile.am |
| 18 | +++ b/Makefile.am |
Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 19 | @@ -52,10 +52,10 @@ AM_CPPFLAGS = \ |
| 20 | -pthread \ |
| 21 | -D_GNU_SOURCE -DINTERNAL_VERSION_ID='"@INTERNAL_VERSION_ID@"' \ |
| 22 | $(CORE_INCLUDES) \ |
| 23 | - $(all_includes) |
| 24 | + $(all_includes) @NOWARNINGS@ |
| 25 | |
| 26 | -AM_CFLAGS = -pipe -std=gnu11 @OSAF_HARDEN_FLAGS@ -Wall -Wformat=2 -Werror |
| 27 | -AM_CXXFLAGS = -pipe -std=gnu++11 @OSAF_HARDEN_FLAGS@ -Wall -Wformat=2 -Werror |
| 28 | +AM_CFLAGS = -pipe -std=gnu11 @OSAF_HARDEN_FLAGS@ -Wall -Wformat=2 -Werror @NOWARNINGS@ |
| 29 | +AM_CXXFLAGS = -pipe -std=gnu++11 @OSAF_HARDEN_FLAGS@ -Wall -Wformat=2 -Werror @NOWARNINGS@ |
Brad Bishop | 316dfdd | 2018-06-25 12:45:53 -0400 | [diff] [blame] | 30 | |
| 31 | if ENABLE_GCOV |
| 32 | AM_CFLAGS += --coverage |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 33 | diff --git a/configure.ac b/configure.ac |
| 34 | index 5b86730..47d1002 100644 |
| 35 | --- a/configure.ac |
| 36 | +++ b/configure.ac |
| 37 | @@ -600,6 +600,8 @@ if test -z "$OSAF_HARDEN_FLAGS"; then |
Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 38 | fi |
| 39 | AC_SUBST(OSAF_HARDEN_FLAGS) |
| 40 | |
| 41 | +AX_CHECK_COMPILE_FLAG([-Werror=format-overflow],[NOWARNINGS=-Wno-error=format-overflow]) |
| 42 | +AC_SUBST(NOWARNINGS) |
| 43 | ############################################# |
| 44 | # List the output Makefiles |
| 45 | ############################################# |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 46 | diff --git a/m4/ax_check_compile_flag.m4 b/m4/ax_check_compile_flag.m4 |
| 47 | new file mode 100644 |
| 48 | index 0000000..dcabb92 |
Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 49 | --- /dev/null |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 50 | +++ b/m4/ax_check_compile_flag.m4 |
Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 51 | @@ -0,0 +1,74 @@ |
| 52 | +# =========================================================================== |
| 53 | +# https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html |
| 54 | +# =========================================================================== |
| 55 | +# |
| 56 | +# SYNOPSIS |
| 57 | +# |
| 58 | +# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT]) |
| 59 | +# |
| 60 | +# DESCRIPTION |
| 61 | +# |
| 62 | +# Check whether the given FLAG works with the current language's compiler |
| 63 | +# or gives an error. (Warnings, however, are ignored) |
| 64 | +# |
| 65 | +# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on |
| 66 | +# success/failure. |
| 67 | +# |
| 68 | +# If EXTRA-FLAGS is defined, it is added to the current language's default |
| 69 | +# flags (e.g. CFLAGS) when the check is done. The check is thus made with |
| 70 | +# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to |
| 71 | +# force the compiler to issue an error when a bad flag is given. |
| 72 | +# |
| 73 | +# INPUT gives an alternative input source to AC_COMPILE_IFELSE. |
| 74 | +# |
| 75 | +# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this |
| 76 | +# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG. |
| 77 | +# |
| 78 | +# LICENSE |
| 79 | +# |
| 80 | +# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> |
| 81 | +# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> |
| 82 | +# |
| 83 | +# This program is free software: you can redistribute it and/or modify it |
| 84 | +# under the terms of the GNU General Public License as published by the |
| 85 | +# Free Software Foundation, either version 3 of the License, or (at your |
| 86 | +# option) any later version. |
| 87 | +# |
| 88 | +# This program is distributed in the hope that it will be useful, but |
| 89 | +# WITHOUT ANY WARRANTY; without even the implied warranty of |
| 90 | +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
| 91 | +# Public License for more details. |
| 92 | +# |
| 93 | +# You should have received a copy of the GNU General Public License along |
| 94 | +# with this program. If not, see <https://www.gnu.org/licenses/>. |
| 95 | +# |
| 96 | +# As a special exception, the respective Autoconf Macro's copyright owner |
| 97 | +# gives unlimited permission to copy, distribute and modify the configure |
| 98 | +# scripts that are the output of Autoconf when processing the Macro. You |
| 99 | +# need not follow the terms of the GNU General Public License when using |
| 100 | +# or distributing such scripts, even though portions of the text of the |
| 101 | +# Macro appear in them. The GNU General Public License (GPL) does govern |
| 102 | +# all other use of the material that constitutes the Autoconf Macro. |
| 103 | +# |
| 104 | +# This special exception to the GPL applies to versions of the Autoconf |
| 105 | +# Macro released by the Autoconf Archive. When you make and distribute a |
| 106 | +# modified version of the Autoconf Macro, you may extend this special |
| 107 | +# exception to the GPL to apply to your modified version as well. |
| 108 | + |
| 109 | +#serial 5 |
| 110 | + |
| 111 | +AC_DEFUN([AX_CHECK_COMPILE_FLAG], |
| 112 | +[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF |
| 113 | +AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl |
| 114 | +AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [ |
| 115 | + ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS |
| 116 | + _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1" |
| 117 | + AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])], |
| 118 | + [AS_VAR_SET(CACHEVAR,[yes])], |
| 119 | + [AS_VAR_SET(CACHEVAR,[no])]) |
| 120 | + _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags]) |
| 121 | +AS_VAR_IF(CACHEVAR,yes, |
| 122 | + [m4_default([$2], :)], |
| 123 | + [m4_default([$3], :)]) |
| 124 | +AS_VAR_POPDEF([CACHEVAR])dnl |
| 125 | +])dnl AX_CHECK_COMPILE_FLAGS |