# HG changeset patch
# User koda
# Date 1354402960 -3600
# Node ID 33868aea694ca0c1e8fc9d7ff6b6549fec8041d3
# Parent  a1ffcb559f99d5b3e3b9e9d5da26fee50bf04f95# Parent  5bc0fc0bab4d763e596d0508d673c397b3de8f5a
GCI2012: Move Freepascal discovery code into a CMake module

diff -r a1ffcb559f99 -r 33868aea694c cmake_modules/FindFreepascal.cmake
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmake_modules/FindFreepascal.cmake	Sun Dec 02 00:02:40 2012 +0100
@@ -0,0 +1,34 @@
+# Load Freepascal
+if (FPC)
+    set(FPC_EXECUTABLE ${FPC})
+else()
+    find_program(FPC_EXECUTABLE
+        NAMES fpc
+        PATHS /opt/local/bin /usr/local/bin /usr/bin)
+endif()
+
+# Check Freepascal version
+if (FPC_EXECUTABLE)
+    exec_program(${FPC_EXECUTABLE} ARGS "-v" OUTPUT_VARIABLE FPC_VERSION_FULL)
+
+    string(REGEX MATCH "[0-9]+\\.[0-9]+" FPC_VERSION_LONG "${FPC_VERSION_FULL}")
+    string(REGEX REPLACE "([0-9]+\\.[0-9]+)" "\\1" FPC_VERSION "${FPC_VERSION_LONG}")
+else()
+    message(FATAL_ERROR "Freepascal not found (required for hedgewars)")
+endif()
+
+# Check for noexecstack flag support
+set(NOEXECSTACK_FLAGS "-k-z" "-knoexecstack")
+file(WRITE ${EXECUTABLE_OUTPUT_PATH}/checkstack.pas "begin end.")
+
+execute_process(COMMAND ${FPC_EXECUTABLE} ${NOEXECSTACK_FLAGS} checkstack.pas
+    WORKING_DIRECTORY ${EXECUTABLE_OUTPUT_PATH}
+    RESULT_VARIABLE TEST_NOEXECSTACK
+    OUTPUT_QUIET ERROR_QUIET)
+
+if (TEST_NOEXECSTACK)
+    set(NOEXECSTACK_FLAGS "")
+    message(STATUS "Checking whether linker needs explicit noexecstack -- no")
+else()
+    message(STATUS "Checking whether linker needs explicit noexecstack -- yes")
+endif()
diff -r a1ffcb559f99 -r 33868aea694c hedgewars/CMakeLists.txt
--- a/hedgewars/CMakeLists.txt	Sun Dec 02 01:26:00 2012 +0400
+++ b/hedgewars/CMakeLists.txt	Sun Dec 02 00:02:40 2012 +0100
@@ -12,6 +12,12 @@
 set(hwengine_project ${hedgewars_SOURCE_DIR}/hedgewars/hwengine.pas)
 set(engine_output_name "hwengine")
 
+if (APPLE)
+    set(required_fpc_version 2.6)
+else()
+    set(required_fpc_version 2.2)
+endif()
+
 set(engine_sources
     ${hwengine_project}
     LuaPas.pas
@@ -101,54 +107,15 @@
 endif(BUILD_ENGINE_LIBRARY)
 
 
-#PASCAL DETECTION SECTION
-if(FPC)
-    set(fpc_executable ${FPC})
+# Check Freepascal version
+find_package(Freepascal)
+
+if (FPC_VERSION VERSION_LESS required_fpc_version)
+    message(FATAL_ERROR "Necessary FPC version not found (version >= ${required_fpc_version} required)")
 else()
-    find_program(fpc_executable fpc)
+    message(STATUS "Found FPC: ${FPC_EXECUTABLE} (version ${FPC_VERSION})")
 endif()
 
-message(STATUS "Check for working FPC compiler: ${fpc_executable}")
-execute_process(COMMAND ${fpc_executable} -iV OUTPUT_VARIABLE fpc_output ERROR_VARIABLE fpc_error)
-if(fpc_error)
-    message(STATUS "Check for working FPC compiler: ${fpc_executable} -- broken")
-else(fpc_error)
-    message(STATUS "Check for working FPC compiler: ${fpc_executable} -- works")
-endif(fpc_error)
-
-string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" fpc_version "${fpc_output}")
-if(fpc_version)
-    string(REGEX REPLACE "([0-9]+)\\.[0-9]+\\.[0-9]+" "\\1" fpc_vers_major "${fpc_version}")
-    string(REGEX REPLACE "[0-9]+\\.([0-9]+)\\.[0-9]+" "\\1" fpc_vers_minor "${fpc_version}")
-    string(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" fpc_vers_patch "${fpc_version}")
-    message(STATUS "Found Freepascal: ${fpc_executable} (version ${fpc_vers_major}.${fpc_vers_minor})")
-    math(EXPR fpc_version "${fpc_vers_major}*10000 + ${fpc_vers_minor}*100 + ${fpc_vers_patch}")
-
-    if(fpc_version LESS "020200")
-        message(FATAL_ERROR "Minimum required version of FreePascal is 2.2.0")
-    elseif(APPLE AND (fpc_version LESS "020600"))
-        message(FATAL_ERROR "Minimum required version of FreePascal is 2.6.0 on Mac OS X")
-    endif()
-else()
-    message(FATAL_ERROR "No FreePascal compiler found!")
-endif()
-
-message(STATUS "Checking whether linker supports noexecstack flag")
-set(noexecstack_flags "-k-z" "-knoexecstack")
-file(WRITE ${EXECUTABLE_OUTPUT_PATH}/checkstack.pas "begin end.")
-
-execute_process(COMMAND ${fpc_executable} ${noexecstack_flags} checkstack.pas
-    WORKING_DIRECTORY ${EXECUTABLE_OUTPUT_PATH}
-    RESULT_VARIABLE testnoexecstack
-    OUTPUT_QUIET ERROR_QUIET
-    )
-
-if(${testnoexecstack})
-    set (noexecstack_flags "")
-    message(STATUS "Checking whether linker supports noexecstack flag -- no")
-else(${testnoexecstack})
-    message(STATUS "Checking whether linker supports noexecstack flag -- yes")
-endif(${testnoexecstack})
 
 #DEPENDECIES AND EXECUTABLES SECTION
 if(APPLE)