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#
# Bindle Binaries Tools
# Copyright (C) 2011 Bindle Binaries <syzdek@bindlebinaries.com>.
#
# @BINDLE_BINARIES_BSD_LICENSE_START@
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of Bindle Binaries nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BINDLE BINARIES BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# @BINDLE_BINARIES_BSD_LICENSE_END@
#
# m4/bindle.m4 - m4 macros used by configure.ac
#
# AC_BINDLE_ENABLE_WARNINGS([extra warnings], [exclude warnings], [value of -std])
# ______________________________________________________________________________
AC_DEFUN([AC_BINDLE_ENABLE_WARNINGS],[dnl
# prerequists
AC_REQUIRE([AC_PROG_CC])
# saves arguments
ac_bindle_warnings_additions=" $1 "
ac_bindle_warnings_exclude=" $2 "
ac_bindle_warnings_std="$3"
# sets compiler
if test "x${CC}" == "x";then
ac_bindle_cc=cc;
else
ac_bindle_cc=${CC};
fi
# sets default for -std
if test "x${ac_bindle_warnings_std}" == "x";then
ac_bindle_warnings_std=gnu11
fi
# display options
enableval=""
AC_ARG_ENABLE(
debug,
[AS_HELP_STRING([--enable-debug], [enable debug messages in binaries])],
[ EDEBUG=$enableval ],
[ EDEBUG=$enableval ]
)
enableval=""
AC_ARG_ENABLE(
warnings,
[AS_HELP_STRING([--disable-warnings], [disable compiler warnings])],
[ EWARNINGS=$enableval ],
[ EWARNINGS=$enableval ]
)
enableval=""
AC_ARG_ENABLE(
strictwarnings,
[AS_HELP_STRING([--enable-strictwarnings], [enable additional compiler warnings])],
[ ESTRICTWARNINGS=$enableval ],
[ ESTRICTWARNINGS=$enableval ]
)
# sets options
if test "x${ESTRICTWARNINGS}" != "xyes";then
USE_STRICTWARNINGS=no
else
USE_STRICTWARNINGS=yes
fi
if test "x${EWARNINGS}" != "xno";then
USE_WARNINGS=yes
else
USE_WARNINGS=no
USE_STRICTWARNINGS=no
fi
if test "x${EDEBUG}" != "xyes";then
USE_DEBUG=no
else
USE_DEBUG=yes
AC_DEFINE_UNQUOTED(USE_DEBUG, 1, [Use debug messages])
fi
# list of args
ac_bindle_warnings_list=""
if test "x${USE_STRICTWARNINGS}" == "xyes";then
ac_bindle_warnings_list="${ac_bindle_warnings_list} -std=${ac_bindle_warnings_std}"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -pedantic"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -W"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wall"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wextra"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Werror"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Weverything"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wunknown-warning"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wno-unused-macros"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wno-reserved-id-macro"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wno-format-nonliteral"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wno-disabled-macro-expansion"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wabi"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wdiv-by-zero"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wfloat-equal"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wdisabled-optimization"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wswitch-default" # for some reason any call to memset() fails with this flag
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wunused"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wmultichar"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wendif-labels"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wshadow"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wlarger-than-4096"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wpointer-arith"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wbad-function-cast"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wcast-qual"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wcast-align"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wwrite-strings"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Waggregate-return"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wshorten-64-to-32"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wstrict-prototypes"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wmissing-prototypes"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wmissing-declarations"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wmissing-noreturn"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wmissing-format-attribute"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wredundant-decls"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wunreachable-code"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Winvalid-pch"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wpacked"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wpadded"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wnested-externs"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Winline"
ac_bindle_warnings_list="${ac_bindle_warnings_list} ${ac_bindle_warnings_additions}"
elif test "x${USE_WARNINGS}" == "xyes";then
ac_bindle_warnings_list="${ac_bindle_warnings_list} -std=${ac_bindle_warnings_std}"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -W"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wall"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Werror"
ac_bindle_warnings_list="${ac_bindle_warnings_list} ${ac_bindle_warnings_additions}"
elif test "x${USE_WARNINGS}" != "xno";then
ac_bindle_warnings_list="${ac_bindle_warnings_list} -W"
ac_bindle_warnings_list="${ac_bindle_warnings_list} -Wall"
fi
# creates test source code
if test -f "${srcdir}/${ac_aux_dir}/bindletest-gccwarnings.c";then
cp \
"${srcdir}/${ac_aux_dir}/bindletest-gccwarnings.c" \
conftest.c
elif test -f "${srcdir}/${bindletools_srcdir}/build-aux/bindletest-gccwarnings.c";then
cp \
"${srcdir}/${bindletools_srcdir}/build-aux/bindletest-gccwarnings.c" \
conftest.c
else
AC_LANG_CONFTEST(
[AC_LANG_PROGRAM(
[[int main(void);]],
[[//return(0);]]
)])
fi
# loops throough options
CFLAGS_WARNINGS=""
for ac_bindle_warning in ${ac_bindle_warnings_list};do
AC_MSG_CHECKING(for gcc flag ${ac_bindle_warning})
if test "x${ac_bindle_warnings_exclude}" != "x${ac_bindle_warnings_exclude% ${ac_bindle_warning} }";then
AC_MSG_RESULT(skipping)
else
${ac_bindle_cc} ${CFLAGS_WARNINGS} ${ac_bindle_warning} -Werror conftest.c -o conftest.o > /dev/null 2>&1
if test "x$?" == "x0";then
CFLAGS_WARNINGS="${CFLAGS_WARNINGS} ${ac_bindle_warning}"
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
fi
done
# cleans up files
rm -f conftest.c
# export variables
AC_SUBST(CFLAGS_WARNINGS, "$CFLAGS_WARNINGS")
])dnl
# end of m4 file
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