ref: b59fb8e698ff572cae533a6569ef53f43777c820
parent: d4d6bd6f3f873522f0a53db128e976dd0bcc7cf2
author: cbagwell <cbagwell>
date: Wed Jan 3 21:17:00 EST 2007
Adding macro to find libsamplerate even without PKG_CHECK_MODULES MACRO
--- /dev/null
+++ b/m4/samplerate.m4
@@ -1,0 +1,70 @@
+dnl SOX_PATH_SAMPLERATE
+dnl Based off of shout.m4 from xiph package.
+dnl cbagwell@users.sourceforge.net 1-3-2007
+dnl
+dnl Original Authors:
+dnl Jack Moffitt <jack@icecast.org> 08-06-2001
+dnl Rewritten for libshout 2
+dnl Brendan Cully <brendan@xiph.org> 20030612
+dnl
+# SOX_PATH_SAMPLERATE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+# Test for libsamplerate, and define SAMPLERATE_CFLAGS and SAMPLERATE_LIBS
+AC_DEFUN([SOX_PATH_SAMPLERATE],
+[dnl
+have_samplerate="no"
+SAMPLERATE_CFLAGS=""
+SAMPLERATE_LIBS=""
+
+# Step 1: Use pkg-config if available
+m4_ifdef([PKG_CHECK_MODULES],
+ [# PKG_CHECK_MODULES available
+ PKG_CHECK_MODULES([SAMPLERATE], [samplerate])
+ have_samplerate="maybe"],
+ [# PKG_CHECK_MODULES is unavailable, search for pkg-config program
+ AC_PATH_PROG([PKGCONFIG], [pkg-config], [none])
+ if test "$PKGCONFIG" != "none" && `$PKGCONFIG --exists samplerate`
+ then
+ SAMPLERATE_CFLAGS=`$PKGCONFIG --cflags samplerate`
+ SAMPLERATE_LIBS=`$PKGCONFIG --libs samplerate`
+ have_samplerate="maybe"
+ else
+ if test "$PKGCONFIG" != "none"
+ then
+ AC_MSG_NOTICE([$PKGCONFIG couldn't find libsamplerate. Try adjusting PKG_CONFIG_PATH.])
+ fi
+ # libsamplerate doesn't have samplerate-config but other
+ # packages do and so keep around as an example.
+ # Step 2: try samplerate-config
+ #AC_PATH_PROG([SAMPLERATECONFIG], [samplerate-config], [none])
+ #if test "$SAMPLERATECONFIG" != "none" && test `$SAMPLERATECONFIG --package` = "libsamplerate"
+ #then
+ # SAMPLERATE_CFLAGS=`$SAMPLERATECONFIG --cflags`
+ # SAMPLERATE_LIBS=`$SAMPLERATECONFIG --libs`
+ # have_samplerate="maybe"
+ #fi
+ fi
+ ])
+
+# Now try actually using libsamplerate
+if test "$have_samplerate" != "no"
+then
+ ac_save_CFLAGS="$CFLAGS"
+ ac_save_LIBS="$LIBS"
+ CFLAGS="$CFLAGS $SAMPLERATE_CFLAGS"
+ LIBS="$LIBS $SAMPLERATE_LIBS"
+ AC_CHECK_HEADER([samplerate.h], [
+ AC_DEFINE([HAVE_SAMPLERATE_SAMPLERATE_H], 1, [Define if you have <samplerate.h>])
+ AC_CHECK_FUNC([src_new], [
+ ifelse([$1], , :, [$1])
+ have_samplerate="yes"
+ ])
+ ])
+ CFLAGS="$ac_save_CFLAGS"
+ LIBS="$ac_save_LIBS"
+fi
+
+if test "$have_samplerate" != "yes"
+then
+ ifelse([$2], , :, [$2])
+fi
+])dnl SOX_PATH_SAMPLERATE