From 842f0d3d44f31d05f7200199945fa44fa031097b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Peter=20K=C3=BCmmel?= <syntheticpp@gmx.net>
Date: Tue, 10 May 2011 20:25:31 +0000
Subject: [PATCH] cmake: -Dhelp=1 lists all options

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@38696 a592a061-630c-0410-9148-cb99ea01b6c8
---
 CMakeLists.txt                            | 22 ++++++++++++++++++----
 INSTALL.cmake                             |  6 +++---
 development/cmake/modules/LyXMacros.cmake |  2 +-
 3 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 61a727affa..d51b5de721 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,6 @@
 cmake_minimum_required(VERSION 2.6.4)
 
 set(LYX_PROJECT lyx)
-project(${LYX_PROJECT})
 
 set(LYX_CMAKE_DIR "development/cmake")
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/${LYX_CMAKE_DIR}/modules")
@@ -17,13 +16,13 @@ get_filename_component(TOP_SRC_DIR ${lyx_dir_readme} PATH)
 
 set(CMAKE_PROJECT_NAME ${LYX_PROJECT})
 
+message(STATUS)
 if (${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR}) 
 	message(STATUS "Building in-source")
 	set(TOP_BINARY_DIR "${CMAKE_BINARY_DIR}/build")
 else()
 	message(STATUS "Building out-of-source")
 	set(TOP_BINARY_DIR "${CMAKE_BINARY_DIR}")
-	#cmake_policy(SET CMP0013 OLD)
 endif()
 
 
@@ -82,7 +81,21 @@ LYX_OPTION(WALL                  "Enable all warnings" OFF MSVC)
 LYX_OPTION(CONFIGURE_CHECKS      "Also run configure checks for MSVC" OFF MSVC)
 LYX_OPTION(DEPENDENCIES_DOWNLOAD "Download dependencies for MSVC 10" OFF MSVC)
 
+
+if(help OR HELP)
+	message(STATUS)
+	message(STATUS "Available options: (dis/enable with -D=0/1)")
+	message(STATUS)
+	LYX_OPTION_LIST_ALL(help)	
+	message(STATUS)
+else()
+
+# 'project' triggers the searching for a compiler
+project(${LYX_PROJECT})
+
+
 # Check option dependencies
+
 if(LYX_CPACK)
 	set(LYX_INSTALL ON)
 endif()
@@ -151,7 +164,7 @@ set(VERSION_INFO "CMake Build")
 
 # Try to get some informations from configure.ac
 
-include(LyXPaths)    #called here to define the needed TOP_SRC_DIR-variable
+include(LyXPaths)
 file(STRINGS "${TOP_SRC_DIR}/configure.ac" _config_lines)
 
 if(WIN32)
@@ -518,7 +531,7 @@ endif()
 message(STATUS)
 message(STATUS "Build options, switch LYX_* variables by -DLYX_*=1 or 0:")
 message(STATUS)
-LYX_OPTION_LIST_ALL()
+LYX_OPTION_LIST_ALL(used)
 
 
 set(CPACK_PACKAGE_VERSION_MAJOR "${LYX_MAJOR_VERSION}")
@@ -604,4 +617,5 @@ endif()
 #
 message(STATUS)
 
+endif() #help
 
diff --git a/INSTALL.cmake b/INSTALL.cmake
index 69dafe829f..980eb8556a 100644
--- a/INSTALL.cmake
+++ b/INSTALL.cmake
@@ -132,17 +132,17 @@ Build options
 
     Options could be passed by the -D prefix when running cmake.
     Available options will be listed on each cmake run.
-    Here the options with their default value:
+    -Dhelp=1 lists all available options:
     
     # Available on all systems/compilers
     -- LYX_CPACK                = OFF    : Use the CPack management (Implies LYX_INSTALL option)
     -- LYX_INSTALL              = OFF    : Build install projects/rules (implies a bunch of other options)
-    -- LYX_NLS                  = OFF    : Use nls
+    -- LYX_NLS                  = ON     : Use nls
     -- LYX_ASPELL               = OFF    : Require aspell
     -- LYX_ENCHANT              = OFF    : Require Enchant
     -- LYX_HUNSPELL             = OFF    : Require Hunspell
     -- LYX_DEVEL_VERSION        = OFF    : Build developer version
-    -- LYX_RELEASE              = ON     : Build release version, build debug when disabled
+    -- LYX_RELEASE              = OFF    : Build release version, build debug when disabled
     -- LYX_PACKAGE_SUFFIX       = ON     : Use version suffix for packaging
     -- LYX_PCH                  = OFF    : Use precompiled headers
     -- LYX_MERGE_FILES          = OFF    : Merge source files into one compilation unit
diff --git a/development/cmake/modules/LyXMacros.cmake b/development/cmake/modules/LyXMacros.cmake
index d67a38280a..57c7e7a69d 100644
--- a/development/cmake/modules/LyXMacros.cmake
+++ b/development/cmake/modules/LyXMacros.cmake
@@ -261,7 +261,7 @@ endmacro()
 
 macro(LYX_OPTION_LIST_ALL)
 	foreach(_option ${LYX_OPTIONS})
-		if(${_option}_show_message)
+		if(${_option}_show_message OR ${ARGV0} STREQUAL "help")
 			string(SUBSTRING "${_option}                            " 0 25 _var)
 			if(${_option})
 				set(_isset ON)