[core] only use feature test macros on linux

include/lighttpd/settings.h

@@ -32,9 +32,15 @@
 # warning "unknown OS, please report this"
 #endif
 
-#define _XOPEN_SOURCE 600
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
+/* FreeBSD doesn't export special stuff if any feature test macro is set */
+#ifdef LIGHTY_OS_LINUX
+# define _XOPEN_SOURCE 600
+# ifndef _GNU_SOURCE
+#  define _GNU_SOURCE 1
+# endif
+# ifndef _BSD_SOURCE
+#  define _BSD_SOURCE 1
+# endif
 #endif
 
 #ifdef HAVE_CONFIG_H

src/CMakeLists.txt

@@ -415,7 +415,6 @@ IF(CMAKE_COMPILER_IS_GNUCC)
   SET(CMAKE_C_FLAGS_RELEASE        "${CMAKE_C_FLAGS_RELEASE}     -O2")
   SET(CMAKE_C_FLAGS_DEBUG          "${CMAKE_C_FLAGS_DEBUG}       -O0")
   SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_WITHDEBINFO} -O2")
-  ADD_DEFINITIONS(-D_GNU_SOURCE)
 ENDIF(CMAKE_COMPILER_IS_GNUCC)
 
 SET_TARGET_PROPERTIES(lighttpd2-worker PROPERTIES CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")

wscript

@@ -60,7 +60,7 @@ def configure(conf):
 	conf.env['CCFLAGS'] = tolist(conf.env['CCFLAGS'])
 	conf.env['CCFLAGS'] += [
 		'-std=gnu99', '-Wall', '-Wshadow', '-W', '-pedantic', '-fPIC',
-		'-D_GNU_SOURCE', '-D_FILE_OFFSET_BITS=64', '-D_LARGEFILE_SOURCE', '-D_LARGE_FILES',
+		'-D_FILE_OFFSET_BITS=64', '-D_LARGEFILE_SOURCE', '-D_LARGE_FILES',
 		'-g', '-g2'
 #	'-fno-strict-aliasing',
 	]