acinclude/esd.m4
author Sam Lantinga <slouken@libsdl.org>
Wed, 04 Jun 2014 10:56:56 -0700
changeset 8820 0e935d5b193a
parent 3342 3da232c5980a
permissions -rw-r--r--
Added annotations to help code analysis tools

CR: Bruce Dawson
     1 ##############################################################################
     2 #
     3 # --- esd.m4 ---
     4 #
     5 # Configure paths for ESD
     6 # Manish Singh    98-9-30
     7 # stolen back from Frank Belew
     8 # stolen from Manish Singh
     9 # Shamelessly stolen from Owen Taylor
    10 
    11 dnl AM_PATH_ESD([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
    12 dnl Test for ESD, and define ESD_CFLAGS and ESD_LIBS
    13 dnl
    14 AC_DEFUN([AM_PATH_ESD],
    15 [dnl 
    16 dnl Get the cflags and libraries from the esd-config script
    17 dnl
    18 AC_ARG_WITH(esd-prefix,[  --with-esd-prefix=PFX   Prefix where ESD is installed (optional)],
    19             esd_prefix="$withval", esd_prefix="")
    20 AC_ARG_WITH(esd-exec-prefix,[  --with-esd-exec-prefix=PFX Exec prefix where ESD is installed (optional)],
    21             esd_exec_prefix="$withval", esd_exec_prefix="")
    22 AC_ARG_ENABLE(esdtest, [  --disable-esdtest       Do not try to compile and run a test ESD program],
    23 		    , enable_esdtest=yes)
    24 
    25   if test x$esd_exec_prefix != x ; then
    26      esd_args="$esd_args --exec-prefix=$esd_exec_prefix"
    27      if test x${ESD_CONFIG+set} != xset ; then
    28         ESD_CONFIG=$esd_exec_prefix/bin/esd-config
    29      fi
    30   fi
    31   if test x$esd_prefix != x ; then
    32      esd_args="$esd_args --prefix=$esd_prefix"
    33      if test x${ESD_CONFIG+set} != xset ; then
    34         ESD_CONFIG=$esd_prefix/bin/esd-config
    35      fi
    36   fi
    37 
    38   AC_PATH_PROG(ESD_CONFIG, esd-config, no)
    39   min_esd_version=ifelse([$1], ,0.2.7,$1)
    40   AC_MSG_CHECKING(for ESD - version >= $min_esd_version)
    41   no_esd=""
    42   if test "$ESD_CONFIG" = "no" ; then
    43     no_esd=yes
    44   else
    45     ESD_CFLAGS=`$ESD_CONFIG $esdconf_args --cflags`
    46     ESD_LIBS=`$ESD_CONFIG $esdconf_args --libs`
    47 
    48     esd_major_version=`$ESD_CONFIG $esd_args --version | \
    49            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    50     esd_minor_version=`$ESD_CONFIG $esd_args --version | \
    51            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    52     esd_micro_version=`$ESD_CONFIG $esd_config_args --version | \
    53            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
    54     if test "x$enable_esdtest" = "xyes" ; then
    55       ac_save_CFLAGS="$CFLAGS"
    56       ac_save_LIBS="$LIBS"
    57       CFLAGS="$CFLAGS $ESD_CFLAGS"
    58       LIBS="$LIBS $ESD_LIBS"
    59 dnl
    60 dnl Now check if the installed ESD is sufficiently new. (Also sanity
    61 dnl checks the results of esd-config to some extent
    62 dnl
    63       rm -f conf.esdtest
    64       AC_TRY_RUN([
    65 #include <stdio.h>
    66 #include <stdlib.h>
    67 #include <string.h>
    68 #include <esd.h>
    69 
    70 char*
    71 my_strdup (char *str)
    72 {
    73   char *new_str;
    74   
    75   if (str)
    76     {
    77       new_str = malloc ((strlen (str) + 1) * sizeof(char));
    78       strcpy (new_str, str);
    79     }
    80   else
    81     new_str = NULL;
    82   
    83   return new_str;
    84 }
    85 
    86 int main ()
    87 {
    88   int major, minor, micro;
    89   char *tmp_version;
    90 
    91   system ("touch conf.esdtest");
    92 
    93   /* HP/UX 9 (%@#!) writes to sscanf strings */
    94   tmp_version = my_strdup("$min_esd_version");
    95   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
    96      printf("%s, bad version string\n", "$min_esd_version");
    97      exit(1);
    98    }
    99 
   100    if (($esd_major_version > major) ||
   101       (($esd_major_version == major) && ($esd_minor_version > minor)) ||
   102       (($esd_major_version == major) && ($esd_minor_version == minor) && ($esd_micro_version >= micro)))
   103     {
   104       return 0;
   105     }
   106   else
   107     {
   108       printf("\n*** 'esd-config --version' returned %d.%d.%d, but the minimum version\n", $esd_major_version, $esd_minor_version, $esd_micro_version);
   109       printf("*** of ESD required is %d.%d.%d. If esd-config is correct, then it is\n", major, minor, micro);
   110       printf("*** best to upgrade to the required version.\n");
   111       printf("*** If esd-config was wrong, set the environment variable ESD_CONFIG\n");
   112       printf("*** to point to the correct copy of esd-config, and remove the file\n");
   113       printf("*** config.cache before re-running configure\n");
   114       return 1;
   115     }
   116 }
   117 
   118 ],, no_esd=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
   119        CFLAGS="$ac_save_CFLAGS"
   120        LIBS="$ac_save_LIBS"
   121      fi
   122   fi
   123   if test "x$no_esd" = x ; then
   124      AC_MSG_RESULT(yes)
   125      ifelse([$2], , :, [$2])     
   126   else
   127      AC_MSG_RESULT(no)
   128      if test "$ESD_CONFIG" = "no" ; then
   129        echo "*** The esd-config script installed by ESD could not be found"
   130        echo "*** If ESD was installed in PREFIX, make sure PREFIX/bin is in"
   131        echo "*** your path, or set the ESD_CONFIG environment variable to the"
   132        echo "*** full path to esd-config."
   133      else
   134        if test -f conf.esdtest ; then
   135         :
   136        else
   137           echo "*** Could not run ESD test program, checking why..."
   138           CFLAGS="$CFLAGS $ESD_CFLAGS"
   139           LIBS="$LIBS $ESD_LIBS"
   140           AC_TRY_LINK([
   141 #include <stdio.h>
   142 #include <esd.h>
   143 ],      [ return 0; ],
   144         [ echo "*** The test program compiled, but did not run. This usually means"
   145           echo "*** that the run-time linker is not finding ESD or finding the wrong"
   146           echo "*** version of ESD. If it is not finding ESD, you'll need to set your"
   147           echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
   148           echo "*** to the installed location  Also, make sure you have run ldconfig if that"
   149           echo "*** is required on your system"
   150 	  echo "***"
   151           echo "*** If you have an old version installed, it is best to remove it, although"
   152           echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
   153         [ echo "*** The test program failed to compile or link. See the file config.log for the"
   154           echo "*** exact error that occured. This usually means ESD was incorrectly installed"
   155           echo "*** or that you have moved ESD since it was installed. In the latter case, you"
   156           echo "*** may want to edit the esd-config script: $ESD_CONFIG" ])
   157           CFLAGS="$ac_save_CFLAGS"
   158           LIBS="$ac_save_LIBS"
   159        fi
   160      fi
   161      ESD_CFLAGS=""
   162      ESD_LIBS=""
   163      ifelse([$3], , :, [$3])
   164   fi
   165   AC_SUBST(ESD_CFLAGS)
   166   AC_SUBST(ESD_LIBS)
   167   rm -f conf.esdtest
   168 ])