have cmake determine bsdstring requirement

CMakeLists.txt

@@ -11,6 +11,9 @@ if (MSVC)
 include(MSVC)
 endif (MSVC)
 
+INCLUDE (CheckSymbolExists)
+CHECK_SYMBOL_EXISTS(strlcat string.h HAVE_STRLCAT)
+
 find_package (SQLite3)
 find_package (BerkeleyDB)
 find_package (Curses)

src/CMakeLists.txt

@@ -266,6 +266,10 @@ add_test(server test_eressea)
 
 install(TARGETS eressea DESTINATION "bin")
 
+if (HAVE_STRLCAT)
+	add_definitions(-DHAVE_BSDSTRING)
+endif(HAVE_STRLCAT)
+
 if (DB_FOUND)
 include_directories (${DB_INCLUDE_DIR})
 target_link_libraries(convert ${DB_LIBRARIES})

src/platform.h

@@ -29,8 +29,8 @@
 
 #endif
 
-#define _POSIX_C_SOURCE 200809L
+/* #define _POSIX_C_SOURCE 200809L
-
+*/
 #ifndef MAX_PATH
 # define MAX_PATH 4096
 #endif

src/util/CMakeLists.txt

@@ -3,7 +3,6 @@ project(util C)
 SET(_TEST_FILES
 attrib.test.c
 base36.test.c
-bsdstring.test.c
 # crmessage.test.c
 # dice.test.c
 # event.test.c
@@ -60,6 +59,12 @@ unicode.c
 variant.c
 xml.c
 )
+
+IF(HAVE_BSDSTRING)
+	SET (_TEST_FILES ${_TEST_FILES} bsdstring.test.c)
+	SET (_FILES ${_FILES} bsdstring.c)
+ENDIF(HAVE_BSDSTRING)
+
 FOREACH(_FILE ${_FILES})
     LIST(APPEND _SOURCES ${PROJECT_NAME}/${_FILE})
 ENDFOREACH(_FILE)

src/util/bsdstring.h

@@ -4,6 +4,17 @@
 #include <stddef.h>
 int wrptr(char **ptr, size_t * size, int bytes);
 
+#undef HAVE_STRLCAT
+#undef HAVE_STRLCPY
+#undef HAVE_SLPRINTF
+#ifdef HAVE_BSDSTRING
+#define HAVE_STRLCAT
+#define HAVE_SLPRINT
+#define HAVE_STRLCPY
+#else
+#include <string.h>
+#endif
+
 #ifndef HAVE_STRLCPY
 size_t strlcpy(char *dst, const char *src, size_t siz);
 #endif