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, LIBFLAC_LIBS, LIBFLAC_LIBDIR
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" = "xno" || test "x$libFLAC_prefix" = "xyes" ; then
19    LIBFLAC_LIBS=""
20  elif test "x$libFLAC_prefix" != "x" ; then
21    LIBFLAC_LIBS="-L$libFLAC_prefix/lib"
22  elif test "x$prefix" != "xNONE"; then
23    LIBFLAC_LIBS="-L$prefix/lib"
24  fi
25
26  if test "x$libFLAC_prefix" != "xno" ; then
27    LIBFLAC_LIBS="$LIBFLAC_LIBS -lFLAC $OGG_LIBS -lm"
28  fi
29
30  if test "x$libFLAC_includes" != "x" ; then
31    LIBFLAC_CFLAGS="-I$libFLAC_includes"
32  elif test "x$libFLAC_prefix" != "x" ; then
33    LIBFLAC_CFLAGS="-I$libFLAC_prefix/include"
34  elif test "$prefix" != "xNONE"; then
35    LIBFLAC_CFLAGS=""
36  fi
37
38  AC_MSG_CHECKING(for libFLAC)
39  no_libFLAC=""
40
41
42  if test "x$enable_libFLACtest" = "xyes" ; then
43    ac_save_CFLAGS="$CFLAGS"
44    ac_save_CXXFLAGS="$CXXFLAGS"
45    ac_save_LIBS="$LIBS"
46    ac_save_LD_LIBRARY_PATH="$LD_LIBRARY_PATH"
47    CFLAGS="$CFLAGS $LIBFLAC_CFLAGS"
48    CXXFLAGS="$CXXFLAGS $LIBFLAC_CFLAGS"
49    LIBS="$LIBS $LIBFLAC_LIBS"
50    LD_LIBRARY_PATH="$LIBFLAC_LIBDIR:$LD_LIBRARY_PATH"
51dnl
52dnl Now check if the installed libFLAC is sufficiently new.
53dnl
54      rm -f conf.libFLACtest
55      AC_TRY_RUN([
56#include <stdio.h>
57#include <stdlib.h>
58#include <string.h>
59#include <FLAC/format.h>
60
61int main ()
62{
63  system("touch conf.libFLACtest");
64  return 0;
65}
66
67],, no_libFLAC=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
68       CFLAGS="$ac_save_CFLAGS"
69       CXXFLAGS="$ac_save_CXXFLAGS"
70       LIBS="$ac_save_LIBS"
71       LD_LIBRARY_PATH="$ac_save_LD_LIBRARY_PATH"
72  fi
73
74  if test "x$no_libFLAC" = "x" ; then
75     AC_MSG_RESULT(yes)
76     ifelse([$1], , :, [$1])
77  else
78     AC_MSG_RESULT(no)
79     if test -f conf.libFLACtest ; then
80       :
81     else
82       echo "*** Could not run libFLAC test program, checking why..."
83       CFLAGS="$CFLAGS $LIBFLAC_CFLAGS"
84       CXXFLAGS="$CXXFLAGS $LIBFLAC_CFLAGS"
85       LIBS="$LIBS $LIBFLAC_LIBS"
86       LD_LIBRARY_PATH="$LIBFLAC_LIBDIR:$LD_LIBRARY_PATH"
87       AC_TRY_LINK([
88#include <stdio.h>
89#include <FLAC/format.h>
90],     [ return 0; ],
91       [ echo "*** The test program compiled, but did not run. This usually means"
92       echo "*** that the run-time linker is not finding libFLAC or finding the wrong"
93       echo "*** version of libFLAC. If it is not finding libFLAC, you'll need to set your"
94       echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
95       echo "*** to the installed location  Also, make sure you have run ldconfig if that"
96       echo "*** is required on your system"
97       echo "***"
98       echo "*** If you have an old version installed, it is best to remove it, although"
99       echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
100       [ echo "*** The test program failed to compile or link. See the file config.log for the"
101       echo "*** exact error that occured. This usually means libFLAC was incorrectly installed"
102       echo "*** or that you have moved libFLAC since it was installed. In the latter case, you"
103       echo "*** may want to edit the libFLAC-config script: $LIBFLAC_CONFIG" ])
104       CFLAGS="$ac_save_CFLAGS"
105       CXXFLAGS="$ac_save_CXXFLAGS"
106       LIBS="$ac_save_LIBS"
107       LD_LIBRARY_PATH="$ac_save_LD_LIBRARY_PATH"
108     fi
109     LIBFLAC_CFLAGS=""
110     LIBFLAC_LIBDIR=""
111     LIBFLAC_LIBS=""
112     ifelse([$2], , :, [$2])
113  fi
114  AC_SUBST(LIBFLAC_CFLAGS)
115  AC_SUBST(LIBFLAC_LIBDIR)
116  AC_SUBST(LIBFLAC_LIBS)
117  rm -f conf.libFLACtest
118])
119