using resources...

configure

@@ -649,6 +649,7 @@ PKG_CONFIG
 CCP4
 UPDATE_REVISION
 USE_RSRC
+MRC
 DEBUG
 LIBCIF_SEMANTIC_VERSION
 LIBCIF_LT_VERSION
@@ -757,6 +758,7 @@ with_gnu_ld
 with_sysroot
 enable_libtool_lock
 enable_revision
+enable_resources
 with_boost
 with_boost_libdir
 with_boost_iostreams
@@ -778,6 +780,7 @@ CPP
 CXXCPP
 LT_SYS_LIBRARY_PATH
 DEBUG
+MRC
 CCP4
 PKG_CONFIG
 PKG_CONFIG_PATH
@@ -1414,6 +1417,7 @@ Optional Features:
                           optimize for fast installation [default=yes]
   --disable-libtool-lock  avoid locking (might break parallel builds)
   --enable-revision       Create a build number as revision
+  --disable-resources     Use mrc to store data in resources
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -1465,6 +1469,7 @@ Some influential environment variables:
   LT_SYS_LIBRARY_PATH
               User-defined run-time library search path.
   DEBUG       Build a debug version of the library
+  MRC         Specify a location for the mrc executable
   CCP4        The location where CCP4 is installed
   PKG_CONFIG  path to pkg-config utility
   PKG_CONFIG_PATH
@@ -17003,14 +17008,86 @@ if test "x$enable_revision" = "xyes" ; then :
 
 fi
 
+# dnl disable resources on macOS
+USE_RSRC=0
+
 case $host in #(
   *-apple-*) :
-    USE_RSRC=0 ;; #(
+     ;; #(
   *) :
+
+
+
+		if test "x$MRC" = "x"; then
+			# Extract the first word of "mrc", so it can be a program name with args.
+set dummy mrc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_MRC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MRC in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_MRC="$MRC" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_MRC="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+MRC=$ac_cv_path_MRC
+if test -n "$MRC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MRC" >&5
+$as_echo "$MRC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+		fi
+
+		if test "x$MRC" = "x"; then
+			{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: The mrc application was not found, not using resources." >&5
+$as_echo "$as_me: WARNING: The mrc application was not found, not using resources." >&2;}
+		else
+			# Check whether --enable-resources was given.
+if test "${enable_resources+set}" = set; then :
+  enableval=$enable_resources;
+fi
+
+
+			if test "x$enable_resources" != "xno" ; then :
+
 				USE_RSRC=1
+
+fi
+		fi
+
  ;;
 esac
 
+USE_RSRC=$USE_RSRC
+
+
+cat >>confdefs.h <<_ACEOF
+#define USE_RSRC $USE_RSRC
+_ACEOF
+
 
 UPDATE_REVISION=$UPDATE_REVISION
 

configure.ac

@@ -85,12 +85,34 @@ AS_IF([test "x$enable_revision" = "xyes" ], [
 	UPDATE_REVISION=1
 ])
 
-dnl disable resources on macOS
+# dnl disable resources on macOS
+USE_RSRC=0
+
 AS_CASE([$host],
-	[*-apple-*], [USE_RSRC=0],
-	[USE_RSRC=1]
+	[*-apple-*], [],
+	[
+		AC_ARG_VAR([MRC], [Specify a location for the mrc executable])
+
+		if test "x$MRC" = "x"; then
+			AC_PATH_PROG([MRC], [mrc])
+		fi
+
+		if test "x$MRC" = "x"; then
+			AC_MSG_WARN([The mrc application was not found, not using resources.])
+		else
+			AC_ARG_ENABLE(
+				resources,
+				[AS_HELP_STRING([--disable-resources], [Use mrc to store data in resources])])
+
+			AS_IF([test "x$enable_resources" != "xno" ], [
+				USE_RSRC=1
+			])
+		fi
+	]
 )
-AC_SUBST([USE_RSRC])
+
+AC_SUBST([USE_RSRC], [$USE_RSRC])
+AC_DEFINE_UNQUOTED([USE_RSRC], [$USE_RSRC], [Use mrc to store resources])
 
 AC_SUBST([UPDATE_REVISION], [$UPDATE_REVISION])
 

libcifpp.pc.in

@@ -7,5 +7,8 @@ datalibdir=@datarootdir@/libcifpp
 Name: libcifpp
 Description: C++ library for the manipulation of mmCIF files.
 Version: @PACKAGE_VERSION@
+
 Libs: -L${libdir} -lcifpp
 Cflags: -I${includedir}
+Requires: @AX_PACKAGE_REQUIRES@
+Requires.private: @AX_PACKAGE_REQUIRES_PRIVATE@
\ No newline at end of file

src/Config.hpp.in

@@ -111,3 +111,6 @@
 
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
+
+/* Use mrc to store resources */
+#undef USE_RSRC