# HG changeset patch
# User koda
# Date 1362584456 -3600
# Node ID a9957b7797f321da6af81285b46a8baabf9c053e
# Parent  fcb87b74ea7ec25c5aa703191cedaa2349d191c1
write FindGHC.cmake for haskell stuff

diff -r fcb87b74ea7e -r a9957b7797f3 CMakeLists.txt
--- a/CMakeLists.txt	Wed Mar 06 09:42:20 2013 -0500
+++ b/CMakeLists.txt	Wed Mar 06 16:40:56 2013 +0100
@@ -284,28 +284,6 @@
 endif()
 
 
-
-#server discovery
-if(NOT NOSERVER)
-    if(GHC)
-        set(ghc_executable ${GHC})
-    else()
-        find_program(ghc_executable ghc)
-    endif()
-
-    if(ghc_executable)
-        add_subdirectory(gameServer)
-        message(STATUS "Found GHC: ${ghc_executable}")
-    else()
-        message(${WARNING} "Could NOT find GHC, server will not be built")
-        set(HAVE_NETSERVER false)
-    endif()
-else()
-    message(STATUS "Server will not be built per user request")
-    set(HAVE_NETSERVER false)
-endif()
-
-
 #lua discovery
 find_package(Lua)
 if(LUA_FOUND)
@@ -362,9 +340,14 @@
     set(FFMPEG_FOUND false)
 endif()
 
-#
+#physfs helper library
 add_subdirectory(misc/libphyslayer)
 
+#server
+if(NOT NOSERVER)
+    add_subdirectory(gameServer)
+endif()
+
 #main engine
 add_subdirectory(hedgewars)
 
diff -r fcb87b74ea7e -r a9957b7797f3 cmake_modules/FindGHC.cmake
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmake_modules/FindGHC.cmake	Wed Mar 06 16:40:56 2013 +0100
@@ -0,0 +1,38 @@
+# - Try to find the Glasgow Haskell Compiler executable
+# Once done this will define
+#
+#  GHC_FOUND       - system has GHC
+#  GHC_VERSION     - GHC version
+#  GHC_EXECUTABLE  - GHC executable
+#
+# Copyright (c) 2013, Vittorio Giovara <vittorio.giovara@gmail.com>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+
+find_program(GHC_EXECUTABLE
+    NAMES ghc
+    PATHS /opt/local/bin /usr/local/bin /usr/bin
+    )
+
+if (GHC_EXECUTABLE)
+    # check Freepascal version
+    execute_process(COMMAND ${GHC_EXECUTABLE} -V
+                    OUTPUT_VARIABLE GHC_VERSION_OUTPUT
+                    ERROR_VARIABLE GHC_VERSION_ERROR
+                    RESULT_VARIABLE GHC_VERSION_RESULT
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    )
+
+    if(${GHC_VERSION_RESULT} EQUAL 0)
+        string(REGEX MATCH "([0-9]+)" GHC_VERSION ${GHC_VERSION_OUTPUT})
+    else()
+        message(SEND_ERROR "Command \"${GHC_EXECUTABLE} -V\" failed with output: ${GHC_VERSION_ERROR}")
+    endif()
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(GHC DEFAULT_MSG GHC_EXECUTABLE GHC_VERSION)
+mark_as_advanced(GHC_VERSION)
+
diff -r fcb87b74ea7e -r a9957b7797f3 gameServer/CMakeLists.txt
--- a/gameServer/CMakeLists.txt	Wed Mar 06 09:42:20 2013 -0500
+++ b/gameServer/CMakeLists.txt	Wed Mar 06 16:40:56 2013 +0100
@@ -1,4 +1,8 @@
 
+find_package(GHC REQUIRED)
+if(NOT ${GHC_FOUND})
+    message(FATAL_ERROR "Missing Glasgow Haskell Compiler! Rerun cmake with -DNOSERVER=on to disable hosting LAN games")
+endif()
 
 set(hwserver_sources
     OfficialServer/DBInteraction.hs
@@ -34,7 +38,7 @@
     ${haskell_flags})
 
 add_custom_command(OUTPUT "${EXECUTABLE_OUTPUT_PATH}/hedgewars-server${CMAKE_EXECUTABLE_SUFFIX}"
-        COMMAND "${ghc_executable}"
+        COMMAND "${GHC_EXECUTABLE}"
         ARGS ${ghc_flags}
         MAIN_DEPENDENCY ${hwserv_main}
         DEPENDS ${hwserver_sources}