correct a condition in check-libheader.m4 remove gst a52 and mpeg2dec m4's in favor of ones i have sent to walken for...

Original commit message from CVS:
* correct a condition in check-libheader.m4
* remove gst a52 and mpeg2dec m4's in favor of ones i have sent to
walken for inclusion in the upstream packages

1 files changed, 121 insertions, 0 deletions

diff --git a/m4/a52.m4 b/m4/a52.m4
new file mode 100644
index 00000000..fe89c1b7
--- /dev/null
+++ b/m4/a52.m4
@@ -0,0 +1,121 @@
+dnl
+dnl A52_CHECK-LIBHEADER(FEATURE-NAME, LIB-NAME, LIB-FUNCTION, HEADER-NAME,
+dnl                     ACTION-IF-FOUND, ACTION-IF-NOT-FOUND,
+dnl                     EXTRA-LDFLAGS, EXTRA-CPPFLAGS)
+dnl
+dnl FEATURE-NAME        - feature name; library and header files are treated
+dnl                       as feature, which we look for
+dnl LIB-NAME            - library name as in AC_CHECK_LIB macro
+dnl LIB-FUNCTION        - library symbol as in AC_CHECK_LIB macro
+dnl HEADER-NAME         - header file name as in AC_CHECK_HEADER
+dnl ACTION-IF-FOUND     - when feature is found then execute given action
+dnl ACTION-IF-NOT-FOUND - when feature is not found then execute given action
+dnl EXTRA-LDFLAGS       - extra linker flags (-L or -l)
+dnl EXTRA-CPPFLAGS      - extra C preprocessor flags, i.e. -I/usr/X11R6/include
+dnl
+dnl Based on GST_CHECK_LIBHEADER from gstreamer plugins 0.3.1.
+dnl
+AC_DEFUN(A52_CHECK_LIBHEADER,
+[
+  AC_CHECK_LIB([$2], [$3], HAVE_[$1]=yes, HAVE_[$1]=no, [$7])
+  check_libheader_feature_name=translit([$1], A-Z, a-z)
+
+  if test "x$HAVE_[$1]" = "xyes"; then
+    check_libheader_save_CPPFLAGS=$CPPFLAGS
+    CPPFLAGS="[$8] $CPPFLAGS"
+    AC_CHECK_HEADER([$4], :, HAVE_[$1]=no)
+    CPPFLAGS=$check_libheader_save_CPPFLAGS
+  fi
+
+  if test "x$HAVE_[$1]" = "xyes"; then
+    ifelse([$5], , :, [$5])
+  else
+    ifelse([$6], , :, [$6])
+  fi
+]
+)
+
+dnl
+dnl AC_CHECK_A52DEC(ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+dnl
+dnl ACTION-IF-FOUND     - when feature is found then execute given action
+dnl ACTION-IF-NOT-FOUND - when feature is not found then execute given action
+dnl
+dnl Defines HAVE_A52DEC to yes if liba52 is found
+dnl
+dnl CFLAGS and LDFLAGS for the library are stored in A52DEC_CFLAGS and
+dnl A52DEC_LIBS, respectively
+dnl
+dnl Based on GST_CHECK_A52DEC from gstreamer plugins 0.3.3.1
+dnl Thomas Vander Stichele <thomas@apestaart.org>, Andy Wingo <wingo@pobox.com>
+dnl
+AC_DEFUN(AC_CHECK_A52DEC, 
+[dnl
+AC_ARG_WITH(a52dec-prefix,
+    AC_HELP_STRING([--with-a52dec-prefix=PFX],[Prefix where a52dec is installed (optional)]),
+    a52dec_config_prefix="$withval", a52dec_config_prefix="")
+
+if test x$a52dec_config_prefix = x ; then
+    A52_CHECK_LIBHEADER(A52DEC, a52, a52_init, a52dec/a52.h,
+        A52DEC_LIBS="-la52 -lm", , -lm)
+else
+    A52_CHECK_LIBHEADER(A52DEC, a52, a52_init, a52dec/a52.h, [
+            A52DEC_LIBS="-la52 -L$a52dec_config_prefix/lib -lm"
+            A52DEC_CFLAGS="-I$a52dec_config_prefix/include"
+        ], , -L$a52dec_config_prefix/lib, -I$a52dec_config_prefix/include)
+fi
+
+if test $HAVE_A52DEC = "yes"; then
+    ac_save_CFLAGS="$CFLAGS"
+    ac_save_LIBS="$LIBS"
+    CFLAGS="$CFLAGS $A52DEC_CFLAGS"
+    LIBS="$A52DEC_LIBS $LIBS"
+    AC_TRY_RUN([
+#include <inttypes.h>
+#include <a52dec/a52.h>
+
+int 
+main ()
+{
+  a52_state_t *state;
+  return 0;
+}
+        ],, HAVE_A52DEC=no, [echo $ac_n "cross compiling; assumed OK... $ac_c"])
+
+    if test HAVE_A52DEC = "no"; then
+        echo "*** Your a52dec is borked somehow. Please update to 0.7.3."
+    else
+        AC_TRY_RUN([
+#include <inttypes.h>
+#include <a52dec/a52.h>
+
+int 
+main ()
+{
+  int i = sizeof (a52_state_t);
+  return 0;
+}
+            ], HAVE_A52DEC=no,, [echo $ac_n "cross compiling; assumed OK... $ac_c"])
+
+        if test HAVE_A52DEC = "no"; then
+            echo "*** Your a52dec is too old. Please update to 0.7.3."
+        fi
+    fi
+    CFLAGS="$ac_save_CFLAGS"
+    LIBS="$ac_save_LIBS"
+fi
+
+if test HAVE_A52DEC = "no"; then
+    A52DEC_CFLAGS=""
+    A52DEC_LIBS=""
+fi
+
+if test "x$HAVE_A52DEC" = "xyes"; then
+  ifelse([$1], , :, [$1])
+else
+  ifelse([$2], , :, [$2])
+fi
+
+AC_SUBST(A52DEC_CFLAGS)
+AC_SUBST(A52DEC_LIBS)
+])