test/acinclude.m4
author Philipp Wiesemann <philipp.wiesemann@arcor.de>
Wed, 11 Mar 2015 21:14:21 +0100
changeset 9380 07b7c1005a23
parent 6272 f3dbef2cc0f2
permissions -rw-r--r--
Updated internal documentation comments.
slouken@0
     1
# Configure paths for SDL
slouken@0
     2
# Sam Lantinga 9/21/99
slouken@0
     3
# stolen from Manish Singh
slouken@0
     4
# stolen back from Frank Belew
slouken@0
     5
# stolen from Manish Singh
slouken@0
     6
# Shamelessly stolen from Owen Taylor
slouken@0
     7
slouken@6250
     8
# serial 1
slouken@6250
     9
slouken@0
    10
dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
slouken@0
    11
dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
slouken@0
    12
dnl
slouken@6272
    13
AC_DEFUN([AM_PATH_SDL2],
slouken@0
    14
[dnl 
slouken@6250
    15
dnl Get the cflags and libraries from the sdl2-config script
slouken@0
    16
dnl
slouken@0
    17
AC_ARG_WITH(sdl-prefix,[  --with-sdl-prefix=PFX   Prefix where SDL is installed (optional)],
slouken@0
    18
            sdl_prefix="$withval", sdl_prefix="")
slouken@0
    19
AC_ARG_WITH(sdl-exec-prefix,[  --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
slouken@0
    20
            sdl_exec_prefix="$withval", sdl_exec_prefix="")
slouken@0
    21
AC_ARG_ENABLE(sdltest, [  --disable-sdltest       Do not try to compile and run a test SDL program],
slouken@0
    22
		    , enable_sdltest=yes)
slouken@0
    23
slouken@6250
    24
  min_sdl_version=ifelse([$1], ,0.9.0,$1)
slouken@6250
    25
slouken@6250
    26
  if test "x$sdl_prefix$sdl_exec_prefix" = x ; then
slouken@6250
    27
    PKG_CHECK_MODULES([SDL], [sdl2 >= $min_sdl_version],
slouken@6250
    28
           [sdl_pc=yes],
slouken@6250
    29
           [sdl_pc=no])
slouken@6250
    30
  else
slouken@6250
    31
    sdl_pc=no
slouken@6250
    32
    if test x$sdl_exec_prefix != x ; then
slouken@6250
    33
      sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"
slouken@6250
    34
      if test x${SDL_CONFIG+set} != xset ; then
slouken@6250
    35
        SDL_CONFIG=$sdl_exec_prefix/bin/sdl2-config
slouken@6250
    36
      fi
slouken@1755
    37
    fi
slouken@6250
    38
    if test x$sdl_prefix != x ; then
slouken@6250
    39
      sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"
slouken@6250
    40
      if test x${SDL_CONFIG+set} != xset ; then
slouken@6250
    41
        SDL_CONFIG=$sdl_prefix/bin/sdl2-config
slouken@6250
    42
      fi
slouken@1755
    43
    fi
slouken@0
    44
  fi
slouken@0
    45
slouken@6250
    46
  if test "x$sdl_pc" = xyes ; then
slouken@6250
    47
    no_sdl=""
slouken@6250
    48
    SDL_CONFIG="pkg-config sdl2"
slouken@0
    49
  else
slouken@6250
    50
    as_save_PATH="$PATH"
slouken@6250
    51
    if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then
slouken@6250
    52
      PATH="$prefix/bin:$prefix/usr/bin:$PATH"
slouken@6250
    53
    fi
slouken@6250
    54
    AC_PATH_PROG(SDL_CONFIG, sdl2-config, no, [$PATH])
slouken@6250
    55
    PATH="$as_save_PATH"
slouken@6250
    56
    AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
slouken@6250
    57
    no_sdl=""
slouken@0
    58
slouken@6250
    59
    if test "$SDL_CONFIG" = "no" ; then
slouken@6250
    60
      no_sdl=yes
slouken@6250
    61
    else
slouken@6250
    62
      SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags`
slouken@6250
    63
      SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs`
slouken@6250
    64
slouken@6250
    65
      sdl_major_version=`$SDL_CONFIG $sdl_config_args --version | \
slouken@6250
    66
             sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
slouken@6250
    67
      sdl_minor_version=`$SDL_CONFIG $sdl_config_args --version | \
slouken@6250
    68
             sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
slouken@6250
    69
      sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
slouken@6250
    70
             sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
slouken@6250
    71
      if test "x$enable_sdltest" = "xyes" ; then
slouken@6250
    72
        ac_save_CFLAGS="$CFLAGS"
slouken@6250
    73
        ac_save_CXXFLAGS="$CXXFLAGS"
slouken@6250
    74
        ac_save_LIBS="$LIBS"
slouken@6250
    75
        CFLAGS="$CFLAGS $SDL_CFLAGS"
slouken@6250
    76
        CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
slouken@6250
    77
        LIBS="$LIBS $SDL_LIBS"
slouken@0
    78
dnl
slouken@0
    79
dnl Now check if the installed SDL is sufficiently new. (Also sanity
slouken@6250
    80
dnl checks the results of sdl2-config to some extent
slouken@0
    81
dnl
slouken@0
    82
      rm -f conf.sdltest
slouken@0
    83
      AC_TRY_RUN([
slouken@0
    84
#include <stdio.h>
slouken@0
    85
#include <stdlib.h>
slouken@0
    86
#include <string.h>
slouken@0
    87
#include "SDL.h"
slouken@0
    88
slouken@0
    89
char*
slouken@0
    90
my_strdup (char *str)
slouken@0
    91
{
slouken@0
    92
  char *new_str;
slouken@0
    93
  
slouken@0
    94
  if (str)
slouken@0
    95
    {
slouken@0
    96
      new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
slouken@0
    97
      strcpy (new_str, str);
slouken@0
    98
    }
slouken@0
    99
  else
slouken@0
   100
    new_str = NULL;
slouken@0
   101
  
slouken@0
   102
  return new_str;
slouken@0
   103
}
slouken@0
   104
slouken@0
   105
int main (int argc, char *argv[])
slouken@0
   106
{
slouken@0
   107
  int major, minor, micro;
slouken@0
   108
  char *tmp_version;
slouken@0
   109
slouken@0
   110
  /* This hangs on some systems (?)
slouken@0
   111
  system ("touch conf.sdltest");
slouken@0
   112
  */
slouken@0
   113
  { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
slouken@0
   114
slouken@0
   115
  /* HP/UX 9 (%@#!) writes to sscanf strings */
slouken@0
   116
  tmp_version = my_strdup("$min_sdl_version");
slouken@0
   117
  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
slouken@0
   118
     printf("%s, bad version string\n", "$min_sdl_version");
slouken@0
   119
     exit(1);
slouken@0
   120
   }
slouken@0
   121
slouken@0
   122
   if (($sdl_major_version > major) ||
slouken@0
   123
      (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
slouken@0
   124
      (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
slouken@0
   125
    {
slouken@0
   126
      return 0;
slouken@0
   127
    }
slouken@0
   128
  else
slouken@0
   129
    {
slouken@6250
   130
      printf("\n*** 'sdl2-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
slouken@6250
   131
      printf("*** of SDL required is %d.%d.%d. If sdl2-config is correct, then it is\n", major, minor, micro);
slouken@0
   132
      printf("*** best to upgrade to the required version.\n");
slouken@6250
   133
      printf("*** If sdl2-config was wrong, set the environment variable SDL_CONFIG\n");
slouken@6250
   134
      printf("*** to point to the correct copy of sdl2-config, and remove the file\n");
slouken@0
   135
      printf("*** config.cache before re-running configure\n");
slouken@0
   136
      return 1;
slouken@0
   137
    }
slouken@0
   138
}
slouken@0
   139
slouken@0
   140
],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
slouken@6250
   141
        CFLAGS="$ac_save_CFLAGS"
slouken@6250
   142
        CXXFLAGS="$ac_save_CXXFLAGS"
slouken@6250
   143
        LIBS="$ac_save_LIBS"
slouken@6250
   144
      fi
slouken@6250
   145
    fi
slouken@6250
   146
    if test "x$no_sdl" = x ; then
slouken@6250
   147
      AC_MSG_RESULT(yes)
slouken@6250
   148
    else
slouken@6250
   149
      AC_MSG_RESULT(no)
slouken@6250
   150
    fi
slouken@0
   151
  fi
slouken@0
   152
  if test "x$no_sdl" = x ; then
slouken@6250
   153
     ifelse([$2], , :, [$2])
slouken@0
   154
  else
slouken@0
   155
     if test "$SDL_CONFIG" = "no" ; then
slouken@6250
   156
       echo "*** The sdl2-config script installed by SDL could not be found"
slouken@0
   157
       echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
slouken@0
   158
       echo "*** your path, or set the SDL_CONFIG environment variable to the"
slouken@6250
   159
       echo "*** full path to sdl2-config."
slouken@0
   160
     else
slouken@0
   161
       if test -f conf.sdltest ; then
slouken@0
   162
        :
slouken@0
   163
       else
slouken@0
   164
          echo "*** Could not run SDL test program, checking why..."
slouken@0
   165
          CFLAGS="$CFLAGS $SDL_CFLAGS"
slouken@1380
   166
          CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
slouken@0
   167
          LIBS="$LIBS $SDL_LIBS"
slouken@0
   168
          AC_TRY_LINK([
slouken@0
   169
#include <stdio.h>
slouken@0
   170
#include "SDL.h"
slouken@1
   171
slouken@1
   172
int main(int argc, char *argv[])
slouken@1
   173
{ return 0; }
slouken@1
   174
#undef  main
slouken@1
   175
#define main K_and_R_C_main
slouken@0
   176
],      [ return 0; ],
slouken@0
   177
        [ echo "*** The test program compiled, but did not run. This usually means"
slouken@0
   178
          echo "*** that the run-time linker is not finding SDL or finding the wrong"
slouken@0
   179
          echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
slouken@0
   180
          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
slouken@0
   181
          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
slouken@0
   182
          echo "*** is required on your system"
slouken@0
   183
	  echo "***"
slouken@0
   184
          echo "*** If you have an old version installed, it is best to remove it, although"
slouken@0
   185
          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
slouken@0
   186
        [ echo "*** The test program failed to compile or link. See the file config.log for the"
slouken@0
   187
          echo "*** exact error that occured. This usually means SDL was incorrectly installed"
slouken@0
   188
          echo "*** or that you have moved SDL since it was installed. In the latter case, you"
slouken@6250
   189
          echo "*** may want to edit the sdl2-config script: $SDL_CONFIG" ])
slouken@0
   190
          CFLAGS="$ac_save_CFLAGS"
slouken@1380
   191
          CXXFLAGS="$ac_save_CXXFLAGS"
slouken@0
   192
          LIBS="$ac_save_LIBS"
slouken@0
   193
       fi
slouken@0
   194
     fi
slouken@0
   195
     SDL_CFLAGS=""
slouken@0
   196
     SDL_LIBS=""
slouken@0
   197
     ifelse([$3], , :, [$3])
slouken@0
   198
  fi
slouken@0
   199
  AC_SUBST(SDL_CFLAGS)
slouken@0
   200
  AC_SUBST(SDL_LIBS)
slouken@0
   201
  rm -f conf.sdltest
slouken@0
   202
])
slouken@6250
   203
# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
slouken@6250
   204
# serial 1 (pkg-config-0.24)
slouken@6250
   205
# 
slouken@6250
   206
# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
slouken@6250
   207
#
slouken@6250
   208
# This program is free software; you can redistribute it and/or modify
slouken@6250
   209
# it under the terms of the GNU General Public License as published by
slouken@6250
   210
# the Free Software Foundation; either version 2 of the License, or
slouken@6250
   211
# (at your option) any later version.
slouken@6250
   212
#
slouken@6250
   213
# This program is distributed in the hope that it will be useful, but
slouken@6250
   214
# WITHOUT ANY WARRANTY; without even the implied warranty of
slouken@6250
   215
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
slouken@6250
   216
# General Public License for more details.
slouken@6250
   217
#
slouken@6250
   218
# You should have received a copy of the GNU General Public License
slouken@6250
   219
# along with this program; if not, write to the Free Software
slouken@6250
   220
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
slouken@6250
   221
#
slouken@6250
   222
# As a special exception to the GNU General Public License, if you
slouken@6250
   223
# distribute this file as part of a program that contains a
slouken@6250
   224
# configuration script generated by Autoconf, you may include it under
slouken@6250
   225
# the same distribution terms that you use for the rest of that program.
slouken@6250
   226
slouken@6250
   227
# PKG_PROG_PKG_CONFIG([MIN-VERSION])
slouken@6250
   228
# ----------------------------------
slouken@6250
   229
AC_DEFUN([PKG_PROG_PKG_CONFIG],
slouken@6250
   230
[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
slouken@6250
   231
m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
slouken@6250
   232
AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
slouken@6250
   233
AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
slouken@6250
   234
AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
slouken@6250
   235
slouken@6250
   236
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
slouken@6250
   237
	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
slouken@6250
   238
fi
slouken@6250
   239
if test -n "$PKG_CONFIG"; then
slouken@6250
   240
	_pkg_min_version=m4_default([$1], [0.9.0])
slouken@6250
   241
	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
slouken@6250
   242
	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
slouken@6250
   243
		AC_MSG_RESULT([yes])
slouken@6250
   244
	else
slouken@6250
   245
		AC_MSG_RESULT([no])
slouken@6250
   246
		PKG_CONFIG=""
slouken@6250
   247
	fi
slouken@6250
   248
fi[]dnl
slouken@6250
   249
])# PKG_PROG_PKG_CONFIG
slouken@6250
   250
slouken@6250
   251
# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
slouken@6250
   252
#
slouken@6250
   253
# Check to see whether a particular set of modules exists.  Similar
slouken@6250
   254
# to PKG_CHECK_MODULES(), but does not set variables or print errors.
slouken@6250
   255
#
slouken@6250
   256
# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
slouken@6250
   257
# only at the first occurence in configure.ac, so if the first place
slouken@6250
   258
# it's called might be skipped (such as if it is within an "if", you
slouken@6250
   259
# have to call PKG_CHECK_EXISTS manually
slouken@6250
   260
# --------------------------------------------------------------
slouken@6250
   261
AC_DEFUN([PKG_CHECK_EXISTS],
slouken@6250
   262
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
slouken@6250
   263
if test -n "$PKG_CONFIG" && \
slouken@6250
   264
    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
slouken@6250
   265
  m4_default([$2], [:])
slouken@6250
   266
m4_ifvaln([$3], [else
slouken@6250
   267
  $3])dnl
slouken@6250
   268
fi])
slouken@6250
   269
slouken@6250
   270
# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
slouken@6250
   271
# ---------------------------------------------
slouken@6250
   272
m4_define([_PKG_CONFIG],
slouken@6250
   273
[if test -n "$$1"; then
slouken@6250
   274
    pkg_cv_[]$1="$$1"
slouken@6250
   275
 elif test -n "$PKG_CONFIG"; then
slouken@6250
   276
    PKG_CHECK_EXISTS([$3],
slouken@6250
   277
                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
slouken@6250
   278
		     [pkg_failed=yes])
slouken@6250
   279
 else
slouken@6250
   280
    pkg_failed=untried
slouken@6250
   281
fi[]dnl
slouken@6250
   282
])# _PKG_CONFIG
slouken@6250
   283
slouken@6250
   284
# _PKG_SHORT_ERRORS_SUPPORTED
slouken@6250
   285
# -----------------------------
slouken@6250
   286
AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
slouken@6250
   287
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
slouken@6250
   288
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
slouken@6250
   289
        _pkg_short_errors_supported=yes
slouken@6250
   290
else
slouken@6250
   291
        _pkg_short_errors_supported=no
slouken@6250
   292
fi[]dnl
slouken@6250
   293
])# _PKG_SHORT_ERRORS_SUPPORTED
slouken@6250
   294
slouken@6250
   295
slouken@6250
   296
# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
slouken@6250
   297
# [ACTION-IF-NOT-FOUND])
slouken@6250
   298
#
slouken@6250
   299
#
slouken@6250
   300
# Note that if there is a possibility the first call to
slouken@6250
   301
# PKG_CHECK_MODULES might not happen, you should be sure to include an
slouken@6250
   302
# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
slouken@6250
   303
#
slouken@6250
   304
#
slouken@6250
   305
# --------------------------------------------------------------
slouken@6250
   306
AC_DEFUN([PKG_CHECK_MODULES],
slouken@6250
   307
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
slouken@6250
   308
AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
slouken@6250
   309
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
slouken@6250
   310
slouken@6250
   311
pkg_failed=no
slouken@6250
   312
AC_MSG_CHECKING([for $1])
slouken@6250
   313
slouken@6250
   314
_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
slouken@6250
   315
_PKG_CONFIG([$1][_LIBS], [libs], [$2])
slouken@6250
   316
slouken@6250
   317
m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
slouken@6250
   318
and $1[]_LIBS to avoid the need to call pkg-config.
slouken@6250
   319
See the pkg-config man page for more details.])
slouken@6250
   320
slouken@6250
   321
if test $pkg_failed = yes; then
slouken@6250
   322
   	AC_MSG_RESULT([no])
slouken@6250
   323
        _PKG_SHORT_ERRORS_SUPPORTED
slouken@6250
   324
        if test $_pkg_short_errors_supported = yes; then
slouken@6250
   325
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
slouken@6250
   326
        else 
slouken@6250
   327
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
slouken@6250
   328
        fi
slouken@6250
   329
	# Put the nasty error message in config.log where it belongs
slouken@6250
   330
	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
slouken@6250
   331
slouken@6250
   332
	m4_default([$4], [AC_MSG_ERROR(
slouken@6250
   333
[Package requirements ($2) were not met:
slouken@6250
   334
slouken@6250
   335
$$1_PKG_ERRORS
slouken@6250
   336
slouken@6250
   337
Consider adjusting the PKG_CONFIG_PATH environment variable if you
slouken@6250
   338
installed software in a non-standard prefix.
slouken@6250
   339
slouken@6250
   340
_PKG_TEXT])dnl
slouken@6250
   341
        ])
slouken@6250
   342
elif test $pkg_failed = untried; then
slouken@6250
   343
     	AC_MSG_RESULT([no])
slouken@6250
   344
	m4_default([$4], [AC_MSG_FAILURE(
slouken@6250
   345
[The pkg-config script could not be found or is too old.  Make sure it
slouken@6250
   346
is in your PATH or set the PKG_CONFIG environment variable to the full
slouken@6250
   347
path to pkg-config.
slouken@6250
   348
slouken@6250
   349
_PKG_TEXT
slouken@6250
   350
slouken@6250
   351
To get pkg-config, see <http://pkg-config.freedesktop.org/>.])dnl
slouken@6250
   352
        ])
slouken@6250
   353
else
slouken@6250
   354
	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
slouken@6250
   355
	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
slouken@6250
   356
        AC_MSG_RESULT([yes])
slouken@6250
   357
	$3
slouken@6250
   358
fi[]dnl
slouken@6250
   359
])# PKG_CHECK_MODULES