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