diff --git a/configure.ac b/configure.ac
index d3f05aa19de3257758a82d1e5d2a76f497069da9..254580cf2e4ac6b86331e5ff62ee300ae58d87e7 100644 (file)
--- a/configure.ac
+++ b/configure.ac
dnl Process this file with autoconf to produce a configure script.
dnl Process this file with autoconf to produce a configure script.
+dnl
+dnl This is the foobar configure script.
+dnl
+dnl Copyright (C) 2010 Sebastian Harl <sh@tokkee.org>
+dnl
+dnl This program is free software; you can redistribute it and/or modify it
+dnl under the terms of the GNU General Public License as published by the
+dnl Free Software Foundation; only version 2 of the License is applicable.
+dnl
+dnl This program is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License along
+dnl with this program; if not, write to the Free Software Foundation, Inc.,
+dnl 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+dnl OR:
+dnl All rights reserved.
+dnl
+dnl Redistribution and use in source and binary forms, with or without
+dnl modification, are permitted provided that the following conditions
+dnl are met:
+dnl 1. Redistributions of source code must retain the above copyright
+dnl notice, this list of conditions and the following disclaimer.
+dnl 2. Redistributions in binary form must reproduce the above copyright
+dnl notice, this list of conditions and the following disclaimer in the
+dnl documentation and/or other materials provided with the distribution.
+dnl
+dnl THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+dnl ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+dnl TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+dnl PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+dnl CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+dnl EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+dnl PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+dnl OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+dnl WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+dnl OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+dnl ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AC_INIT([foobar],[m4_esyscmd(./version-gen.sh)],
[Sebastian Harl <sh@tokkee.org>])
AC_INIT([foobar],[m4_esyscmd(./version-gen.sh)],
[Sebastian Harl <sh@tokkee.org>])
AM_PROG_CC_C_O
AM_PROG_CC_C_O
-AC_PROG_LIBTOOL
+m4_ifdef([LT_INIT],
+ [
+ LT_INIT
+ ],
+ # else
+ # (older libtools)
+ [
+ AC_PROG_LIBTOOL
+ ]
+)
test_cc_flags() {
AC_LANG_CONFTEST([int main() {}])
test_cc_flags() {
AC_LANG_CONFTEST([int main() {}])
return $ret
}
return $ret
}
-dnl Optionally stick to standard C99 and POSIX.1 2001 as close as possible.
+m4_divert_once([HELP_ENABLE], [
+Build options:])
+
+dnl Optionally stick to standard C99 and POSIX:2001 as close as possible.
AC_ARG_ENABLE([standards],
AS_HELP_STRING([--enable-standards],
AC_ARG_ENABLE([standards],
AS_HELP_STRING([--enable-standards],
- [Enable standards compliance mode]),
+ [C99 / POSIX standards compliance mode @<:@default=no@:>@]),
[enable_standards="$enableval"],
[enable_standards="no"])
[enable_standards="$enableval"],
[enable_standards="no"])
[Define to enable protection against static sized buffer overflows.])
AC_ARG_ENABLE([hardening],
AS_HELP_STRING([--disable-hardening],
[Define to enable protection against static sized buffer overflows.])
AC_ARG_ENABLE([hardening],
AS_HELP_STRING([--disable-hardening],
- [Disable hardening options]),
+ [hardening options @<:@default=yes@:>@]),
[enable_hardening="$enableval"],
[enable_hardening="yes"])
[enable_hardening="$enableval"],
[enable_hardening="yes"])
fi
fi
fi
fi
-for flag in -Wall -Wextra -Werror; do
+dnl Strict checking for potential problems.
+AC_ARG_ENABLE([strict-checks],
+ AS_HELP_STRING([--disable-strict-checks],
+ [strict compiler checks @<:@default=yes@:>@]),
+ [enable_strict_checks="$enableval"],
+ [enable_strict_checks="yes"])
+
+STRICT_CFLAGS=""
+for flag in -Wall -Werror; do
AC_MSG_CHECKING([whether $CC accepts $flag])
if test_cc_flags $flag; then
AC_MSG_CHECKING([whether $CC accepts $flag])
if test_cc_flags $flag; then
AC_MSG_RESULT([no])
fi
done
AC_MSG_RESULT([no])
fi
done
-AC_SUBST([STRICT_CFLAGS])
-build_date="`date --utc '+%F %T'` (UTC)"
-AC_DEFINE_UNQUOTED([BUILD_DATE], ["$build_date"],
- [Define to the date the package has been built on.])
+if test "x$enable_strict_checks" = "xyes"; then
+ for flag in -Wextra \
+ -Wbad-function-cast \
+ -Wcast-align \
+ -Wcast-qual \
+ -Wconversion \
+ -Wdeclaration-after-statement \
+ -Wmissing-prototypes \
+ -Wpointer-arith \
+ -Wshadow \
+ -Wstrict-prototypes \
+ -Wunreachable-code; do
+ AC_MSG_CHECKING([whether $CC accepts $flag])
+
+ if test_cc_flags $flag; then
+ STRICT_CFLAGS="$STRICT_CFLAGS $flag"
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+ done
+fi
+AC_SUBST([STRICT_CFLAGS])
AC_CHECK_HEADERS(libgen.h)
AC_CHECK_HEADERS(libgen.h)
Configuration summary:
package version: $PACKAGE_VERSION
Configuration summary:
package version: $PACKAGE_VERSION
- build date: $build_date
+ build date: `date --utc '+%F %T'` (UTC)
Please report bugs to $PACKAGE_BUGREPORT.
Please report bugs to $PACKAGE_BUGREPORT.