Add build flags to output of lmms --version (#7780)

src/CMakeLists.txt

@@ -1,6 +1,18 @@
 ADD_SUBDIRECTORY(3rdparty)
 
 CONFIGURE_FILE("lmmsconfig.h.in"        "${CMAKE_BINARY_DIR}/lmmsconfig.h")
+
+# Provide config flags to lmmsversion.h
+get_cmake_property(_define_vars VARIABLES)
+foreach (_define_var ${_define_vars})
+    if(_define_var MATCHES "^WANT|LMMS_(HAVE|DEBUG)" )
+        list(APPEND LMMS_BUILD_OPTIONS "${_define_var}='${${_define_var}}'")
+    endif()
+endforeach()
+
+# Format for readibility
+string(REPLACE ";" " " LMMS_BUILD_OPTIONS "${LMMS_BUILD_OPTIONS}")
+
 CONFIGURE_FILE("lmmsversion.h.in"       "${CMAKE_BINARY_DIR}/lmmsversion.h")
 
 SET(LMMS_SRCS "")

src/core/main.cpp

@@ -140,15 +140,16 @@ inline void loadTranslation( const QString & tname,
 
 void printVersion( char *executableName )
 {
-	printf( "LMMS %s\n(%s %s, Qt %s, %s)\n\n"
+	printf("LMMS %s\n(%s %s, Qt %s, %s)\n\n"
+		"Build options:\n%s\n\n"
 		"Copyright (c) %s\n\n"
 		"This program is free software; you can redistribute it and/or\n"
 		"modify it under the terms of the GNU General Public\n"
 		"License as published by the Free Software Foundation; either\n"
 		"version 2 of the License, or (at your option) any later version.\n\n"
 		"Try \"%s --help\" for more information.\n\n", LMMS_VERSION,
-		LMMS_BUILDCONF_PLATFORM, LMMS_BUILDCONF_MACHINE, QT_VERSION_STR, LMMS_BUILDCONF_COMPILER_VERSION,
-		LMMS_PROJECT_COPYRIGHT, executableName );
+		LMMS_BUILDCONF_PLATFORM, LMMS_BUILDCONF_MACHINE, QT_VERSION_STR, LMMS_BUILDCONF_COMPILER_VERSION, LMMS_BUILD_OPTIONS,
+		LMMS_PROJECT_COPYRIGHT, executableName);
 }
 
 

src/lmmsversion.h.in

@@ -1,2 +1,3 @@
 #define LMMS_VERSION "@VERSION@"
 #define LMMS_PROJECT_COPYRIGHT "@PROJECT_COPYRIGHT@"
+#define LMMS_BUILD_OPTIONS "@LMMS_BUILD_OPTIONS@"