From c3339bc66cb9b634130babb613165d9a6c03c311 Mon Sep 17 00:00:00 2001
From: whatdoineed2do/Ray <whatdoineed2do@nospam.gmail.com>
Date: Fri, 26 Jan 2024 12:32:06 +0000
Subject: [PATCH] handle IM6 with FilterTypes enum name

---
 configure.ac   | 6 +++++-
 src/Gopts.h    | 4 ++++
 src/diptych.cc | 4 ++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index bf98f2c..a212e7d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,7 +16,11 @@ PKG_PROG_PKG_CONFIG
 
 AX_CXX_COMPILE_STDCXX([14], [noext], [mandatory])
 
-PKG_CHECK_MODULES(IMAGEMAGICK, [Magick++ >= 7.1.0])
+PKG_CHECK_MODULES(IMAGEMAGICK, [Magick++ >= 6.9.11])
+PKG_CHECK_EXISTS([Magick++ < 7.0.0],
+                 [AC_DEFINE([HAVE_IM_RESIZE_FILTERTYPES], 1,
+                            [Defined if IM resize filter enum type change])])
+
 
 AC_ARG_ENABLE(exiv2,
         AS_HELP_STRING([--disable-exiv2],[do not generate Exif]),
diff --git a/src/Gopts.h b/src/Gopts.h
index 37d4bcc..8304e58 100644
--- a/src/Gopts.h
+++ b/src/Gopts.h
@@ -20,7 +20,11 @@ struct _Gopts {
 
     struct {
 	void (Magick::Image::*fptr)(const Magick::Geometry&);
+#ifdef HAVE_IM_RESIZE_FILTERTYPES
+	Magick::FilterTypes  filter;
+#else
 	Magick::FilterType  filter;
+#endif
 	float  ratio;
     } scale;
 
diff --git a/src/diptych.cc b/src/diptych.cc
index f402518..489a4d3 100644
--- a/src/diptych.cc
+++ b/src/diptych.cc
@@ -176,7 +176,11 @@ int main(int argc, char* const argv[])
 		thegopts.scale.fptr = &Magick::Image::resize;
 		struct IMfltrs {
 		    const char*          name;
+#ifdef HAVE_IM_RESIZE_FILTERTYPES
+		    Magick::FilterTypes  fltr;
+#else
 		    Magick::FilterType  fltr;
+#endif
 		} imfltrs[] = 
 		{
 		    "Point", Magick::PointFilter,