Nasal is C code, not C++

[simgear.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 037ede6a1af72772aee088f585005a8a1a75466a..4b3c0e10d326536e777ed4775c9cb6a208b32100 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -115,7 +115,6 @@ find_package(Threads REQUIRED)
 
 if(SIMGEAR_HEADLESS)
     message(STATUS "headless mode")
-    set(NO_OPENSCENEGRAPH_INTERFACE 1)
 else()
     find_package(OpenGL REQUIRED)
     find_package(OpenAL REQUIRED)
@@ -167,18 +166,15 @@ if(HAVE_UNISTD_H)
 
         int main() { return 0; }
         "
-        HAVE_CLOCK_GETTIME)    
+        HAVE_CLOCK_GETTIME)
 endif(HAVE_UNISTD_H)
 
 set(RT_LIBRARY "")
 if(HAVE_CLOCK_GETTIME)
-    check_function_exists(clock_gettime CLOCK_GETTIME_IN_LIBC)
-    if(NOT CLOCK_GETTIME_IN_LIBC)
-        check_library_exists(rt clock_gettime "" HAVE_RT)
-        if(HAVE_RT)
-            set(RT_LIBRARY rt)
-        endif(HAVE_RT)
-        endif(NOT CLOCK_GETTIME_IN_LIBC)
+    check_library_exists(rt clock_gettime "" HAVE_RT)
+    if(HAVE_RT)
+        set(RT_LIBRARY rt)
+    endif(HAVE_RT)
 endif(HAVE_CLOCK_GETTIME)
 
 SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "add a postfix, usually 'd' on windows")
@@ -205,6 +201,10 @@ endif(CMAKE_COMPILER_IS_GNUCXX)
 
 if(WIN32)
 
+    if(MINGW)
+        add_definitions(-D_WIN32_WINNT=0x501)
+    endif()
+
     if(MSVC)
         # turn off various warnings
         # foreach(warning 4244 4251 4267 4275 4290 4786 4305 4996)
@@ -221,6 +221,10 @@ if(WIN32)
     set( RT_LIBRARY "winmm" )
 endif(WIN32)    
 
+if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang") 
+   set (WARNING_FLAGS "-Wall -Wno-overloaded-virtual")
+endif() 
+
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNING_FLAGS} ${MSVC_FLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARNING_FLAGS} ${MSVC_FLAGS} ${BOOST_CXX_FLAGS}")