src/fb.c: Use PACKAGE_URL.

[template.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index d3f05aa19de3257758a82d1e5d2a76f497069da9..fd6e6888d1ea4d307ce542368b530752e1999b50 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,48 @@
 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>])
+               [Sebastian Harl <sh@tokkee.org>], [],
+               [http://git.tokkee.org/?p=template.git])
 AC_CONFIG_SRCDIR([src/foobar.c])
 AC_CONFIG_HEADERS([src/config.h])
 AC_PREFIX_DEFAULT([/opt/foobar])
@@ -20,7 +61,16 @@ AC_PROG_MAKE_SET
 
 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() {}])
@@ -30,10 +80,13 @@ test_cc_flags() {
        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],
-                               [Enable standards compliance mode]),
+                               [C99 / POSIX standards compliance mode @<:@default=no@:>@]),
                [enable_standards="$enableval"],
                [enable_standards="no"])
 
@@ -66,7 +119,7 @@ AC_DEFINE([_FORTIFY_SOURCE], 2,
                [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"])
 
@@ -91,7 +144,15 @@ if test "x$enable_hardening" = "xyes"; then
        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
@@ -101,11 +162,30 @@ for flag in -Wall -Wextra -Werror; do
                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)
 
@@ -122,7 +202,7 @@ install the package into $prefix.
 Configuration summary:
 
   package version: $PACKAGE_VERSION
-  build date: $build_date
+  build date: `date --utc '+%F %T'` (UTC)
 
 Please report bugs to $PACKAGE_BUGREPORT.