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