Home | History | Annotate | Download | only in libFLAC 
      1 # Configure paths for libFLAC
      2 # "Inspired" by ogg.m4
      3 
      4 dnl AM_PATH_LIBFLAC([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
      5 dnl Test for libFLAC, and define LIBFLAC_CFLAGS, LIBFLAC_LIBS, LIBFLAC_LIBDIR
      6 dnl
      7 AC_DEFUN([AM_PATH_LIBFLAC],
      8 [dnl 
      9 dnl Get the cflags and libraries
     10 dnl
     11 AC_ARG_WITH(libFLAC,[  --with-libFLAC=PFX   Prefix where libFLAC is installed (optional)], libFLAC_prefix="$withval", libFLAC_prefix="")
     12 AC_ARG_WITH(libFLAC-libraries,[  --with-libFLAC-libraries=DIR   Directory where libFLAC library is installed (optional)], libFLAC_libraries="$withval", libFLAC_libraries="")
     13 AC_ARG_WITH(libFLAC-includes,[  --with-libFLAC-includes=DIR   Directory where libFLAC header files are installed (optional)], libFLAC_includes="$withval", libFLAC_includes="")
     14 AC_ARG_ENABLE(libFLACtest, [  --disable-libFLACtest       Do not try to compile and run a test libFLAC program],, enable_libFLACtest=yes)
     15 
     16   if test "x$libFLAC_libraries" != "x" ; then
     17     LIBFLAC_LIBDIR="$libFLAC_libraries"
     18   elif test "x$libFLAC_prefix" != "x" ; then
     19     LIBFLAC_LIBDIR="$libFLAC_prefix/lib"
     20   elif test "x$prefix" != "xNONE" ; then
     21     LIBFLAC_LIBDIR="$libdir"
     22   fi
     23 
     24   LIBFLAC_LIBS="-L$LIBFLAC_LIBDIR -lFLAC $OGG_LIBS -lm"
     25 
     26   if test "x$libFLAC_includes" != "x" ; then
     27     LIBFLAC_CFLAGS="-I$libFLAC_includes"
     28   elif test "x$libFLAC_prefix" != "x" ; then
     29     LIBFLAC_CFLAGS="-I$libFLAC_prefix/include"
     30   elif test "$prefix" != "xNONE"; then
     31     LIBFLAC_CFLAGS=""
     32   fi
     33 
     34   AC_MSG_CHECKING(for libFLAC)
     35   no_libFLAC=""
     36 
     37 
     38   if test "x$enable_libFLACtest" = "xyes" ; then
     39     ac_save_CFLAGS="$CFLAGS"
     40     ac_save_CXXFLAGS="$CXXFLAGS"
     41     ac_save_LIBS="$LIBS"
     42     ac_save_LD_LIBRARY_PATH="$LD_LIBRARY_PATH"
     43     CFLAGS="$CFLAGS $LIBFLAC_CFLAGS"
     44     CXXFLAGS="$CXXFLAGS $LIBFLAC_CFLAGS"
     45     LIBS="$LIBS $LIBFLAC_LIBS"
     46     LD_LIBRARY_PATH="$LIBFLAC_LIBDIR:$LD_LIBRARY_PATH"
     47 dnl
     48 dnl Now check if the installed libFLAC is sufficiently new.
     49 dnl
     50       rm -f conf.libFLACtest
     51       AC_TRY_RUN([
     52 #include <stdio.h>
     53 #include <stdlib.h>
     54 #include <string.h>
     55 #include <FLAC/format.h>
     56 
     57 int main ()
     58 {
     59   system("touch conf.libFLACtest");
     60   return 0;
     61 }
     62 
     63 ],, no_libFLAC=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
     64        CFLAGS="$ac_save_CFLAGS"
     65        CXXFLAGS="$ac_save_CXXFLAGS"
     66        LIBS="$ac_save_LIBS"
     67        LD_LIBRARY_PATH="$ac_save_LD_LIBRARY_PATH"
     68   fi
     69 
     70   if test "x$no_libFLAC" = "x" ; then
     71      AC_MSG_RESULT(yes)
     72      ifelse([$1], , :, [$1])     
     73   else
     74      AC_MSG_RESULT(no)
     75      if test -f conf.libFLACtest ; then
     76        :
     77      else
     78        echo "*** Could not run libFLAC test program, checking why..."
     79        CFLAGS="$CFLAGS $LIBFLAC_CFLAGS"
     80        CXXFLAGS="$CXXFLAGS $LIBFLAC_CFLAGS"
     81        LIBS="$LIBS $LIBFLAC_LIBS"
     82        LD_LIBRARY_PATH="$LIBFLAC_LIBDIR:$LD_LIBRARY_PATH"
     83        AC_TRY_LINK([
     84 #include <stdio.h>
     85 #include <FLAC/format.h>
     86 ],     [ return 0; ],
     87        [ echo "*** The test program compiled, but did not run. This usually means"
     88        echo "*** that the run-time linker is not finding libFLAC or finding the wrong"
     89        echo "*** version of libFLAC. If it is not finding libFLAC, you'll need to set your"
     90        echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
     91        echo "*** to the installed location  Also, make sure you have run ldconfig if that"
     92        echo "*** is required on your system"
     93        echo "***"
     94        echo "*** If you have an old version installed, it is best to remove it, although"
     95        echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
     96        [ echo "*** The test program failed to compile or link. See the file config.log for the"
     97        echo "*** exact error that occured. This usually means libFLAC was incorrectly installed"
     98        echo "*** or that you have moved libFLAC since it was installed. In the latter case, you"
     99        echo "*** may want to edit the libFLAC-config script: $LIBFLAC_CONFIG" ])
    100        CFLAGS="$ac_save_CFLAGS"
    101        CXXFLAGS="$ac_save_CXXFLAGS"
    102        LIBS="$ac_save_LIBS"
    103        LD_LIBRARY_PATH="$ac_save_LD_LIBRARY_PATH"
    104      fi
    105      LIBFLAC_CFLAGS=""
    106      LIBFLAC_LIBDIR=""
    107      LIBFLAC_LIBS=""
    108      ifelse([$2], , :, [$2])
    109   fi
    110   AC_SUBST(LIBFLAC_CFLAGS)
    111   AC_SUBST(LIBFLAC_LIBDIR)
    112   AC_SUBST(LIBFLAC_LIBS)
    113   rm -f conf.libFLACtest
    114 ])
    115