Imported http://autoconf-archive.cryp.to/ release 2007-02-14.

1 files changed, 82 insertions, 0 deletions

diff --git a/m4/ax_check_gd.m4 b/m4/ax_check_gd.m4
new file mode 100644
index 0000000..9381900
--- /dev/null
+++ b/m4/ax_check_gd.m4
@@ -0,0 +1,82 @@
+##### http://autoconf-archive.cryp.to/ax_check_gd.html
+#
+# SYNOPSIS
+#
+#   AX_CHECK_GD
+#
+# DESCRIPTION
+#
+#   Check for the gd library. (See http://www.boutell.com/gd/) If gd is
+#   found, the output variables GD_CFLAGS, GD_LDFLAGS and GD_LIBS will
+#   contain the compiler flags, linker flags and libraries necessary to
+#   use gd; otherwise, those variables will be empty. In addition, the
+#   symbol HAVE_GD is defined if the library is found, and the symbols
+#   HAVE_GD_GIF, HAVE_GD_JPEG and HAVE_GD_PNG are defined if the
+#   lirbary supports creating images in gif, jpeg and png formats,
+#   respectively.
+#
+#   The user may use --with-gd=no or --without-gd to skip checking for
+#   the library. (The default is --with-gd=yes.) If the library is
+#   installed in an unusual location, --with-gd=DIR will cause the
+#   macro to look for gdlib-config in DIR/bin or, failing that, for the
+#   headers and libraries in DIR/include and DIR/lib.
+#
+#   Feedback welcome!
+#
+# LAST MODIFICATION
+#
+#   2005-09-22
+#
+# COPYLEFT
+#
+#   Copyright (c) 2005 Nick Markham <markhn@rpi.edu>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+AC_DEFUN([AX_CHECK_GD], [
+	AC_ARG_WITH(gd,
+		AC_HELP_STRING([--with-gd(=DIR)], [use the gd library (in DIR)]),,
+		with_gd=yes)
+
+	if test "$with_gd" != no; then
+		AC_PATH_PROG(GDLIB_CONFIG, gdlib-config, , [$with_gd/bin:$PATH])
+		if test -n "$GDLIB_CONFIG"; then
+			GD_CFLAGS=`$GDLIB_CONFIG --cflags`
+			GD_LDFLAGS=`$GDLIB_CONFIG --ldflags`
+			GD_LIBS=`$GDLIB_CONFIG --libs`
+		elif test -d "$with_gd"; then
+			GD_CFLAGS="-I$with_gd/include"
+			GD_LDFLAGS="-L$with_gd/lib"
+			AC_CHECK_LIB(z, inflateReset, GD_LIBS="-lz")
+			AC_CHECK_LIB(png, png_check_sig, GD_LIBS="-lpng $GD_LIBS", , $GD_LIBS)
+		fi
+
+		save_CFLAGS="$CFLAGS"
+		CFLAGS="$GD_CFLAGS $CFLAGS"
+		save_LDFLAGS="$LDFLAGS"
+		LDFLAGS="$GD_LDFLAGS $LDFLAGS"
+
+		AC_CHECK_LIB(gd, gdImageCreate, [
+			AC_DEFINE(HAVE_GD, 1, [ Define if you have gd library. ])
+			AC_CHECK_LIB(gd, gdImageGif, AC_DEFINE(HAVE_GD_GIF, 1, [ Define if GD supports gif. ]), , "$GD_LIBS")
+			AC_CHECK_LIB(gd, gdImageJpeg, AC_DEFINE(HAVE_GD_JPEG, 1, [ Define if GD supports jpeg. ]), , "$GD_LIBS")
+			AC_CHECK_LIB(gd, gdImagePng, AC_DEFINE(HAVE_GD_PNG, 1, [ Define if GD supports png. ]), , "$GD_LIBS")
+			GD_LIBS="-lgd $GD_LIBS"
+		], with_gd=no, $GD_LIBS)
+
+		CFLAGS="$save_CFLAGS"
+		LDFLAGS="$save_LDFLAGS"
+	fi
+
+	if test "$with_gd" = "no"; then
+		GD_CFLAGS="";
+		GD_LDFLAGS="";
+		GD_LIBS="";
+	fi
+
+	AC_SUBST(GD_CFLAGS)
+	AC_SUBST(GD_LDFLAGS)
+	AC_SUBST(GD_LIBS)
+])