strndup polyfill for cmake

CMakeLists.txt

@@ -15,7 +15,9 @@ SET(CMAKE_MODULE_PATH
     ${CMAKE_MODULE_PATH}
     )
 
-include_directories(. "${PROJECT_SOURCE_DIR}/include" ${INCLUDE_DIRECTORIES} /opt/local/include)
+include_directories(. ${PROJECT_SOURCE_DIR}/include ${PROJECT_SOURCE_DIR}/src ${PROJECT_SOURCE_DIR}/3rdparty /opt/local/include)
+# include_directories(. ${PROJECT_SOURCE_DIR}/include ${PROJECT_SOURCE_DIR}/src ${PROJECT_SOURCE_DIR}/3rdparty ${PROJECT_SOURCE_DIR})
+
 link_directories(${LINK_DIRECTORIES} /opt/local/lib)
 find_package(PCRE REQUIRED)
 find_package(Judy REQUIRED)

include/r3_str.h

@@ -22,6 +22,19 @@ void str_repeat(char *s, const char *c, int len);
 
 void print_indent(int level);
 
+
+#if _GNU_SOURCE || POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700 || __DARWIN_C_LEVEL >= 200809L
+#define HAVE_STRNDUP
+#endif
+
+#if _SVID_SOURCE || _BSD_SOURCE \
+    || _XOPEN_SOURCE >= 500 \
+    || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED \
+    || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L \
+    || __DARWIN_C_LEVEL >= 200809L
+#define HAVE_STRDUP
+#endif
+
 #ifndef HAVE_STRDUP
 char *strdup(const char *s);
 #endif

src/CMakeLists.txt

@@ -1,4 +1,4 @@
-include_directories("${PROJECT_SOURCE_DIR}/include ${PROJECT_SOURCE_DIR}/src ${PROJECT_SOURCE_DIR}")
+include_directories("${PROJECT_SOURCE_DIR}/include ${PROJECT_SOURCE_DIR}/src ${PROJECT_SOURCE_DIR}/3rdparty ${PROJECT_SOURCE_DIR}")
 # install(TARGETS swiftnav-static DESTINATION lib${LIB_SUFFIX})
 
 set(libr3_SRCS node.c edge.c list.c slug.c str.c token.c)

src/str.c

@@ -207,6 +207,8 @@ void print_indent(int level) {
     }
 }
 
+
+
 #ifndef HAVE_STRDUP
 char *zstrdup(const char *s) {
     char *out;
@@ -222,6 +224,8 @@ char *zstrdup(const char *s) {
 }
 #endif
 
+
+
 #ifndef HAVE_STRNDUP
 char *zstrndup(const char *s, int n) {
     char *out;