ENH: Properly detect strerror_r for glibc or posix"

Source/CTest/Curl/CMake/CurlTests.c

@@ -476,3 +476,48 @@ main ()
   return 0;
 }
 #endif
+#ifdef HAVE_SO_NONBLOCK
+
+/* headers for SO_NONBLOCK test (BeOS) */
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main()
+{
+/* SO_NONBLOCK source code */
+ long b = 1;
+ int socket;
+ int flags = setsockopt(socket, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
+ return 0;
+}
+#endif
+#ifdef HAVE_GLIBC_STRERROR_R
+#include <string.h>
+#include <errno.h>
+int
+main () {
+  char buffer[1024]; /* big enough to play with */
+  char *string =
+    strerror_r(EACCES, buffer, sizeof(buffer));
+    /* this should've returned a string */
+    if(!string || !string[0])
+      return 99;
+    return 0;
+}
+#endif
+#ifdef HAVE_POSIX_STRERROR_R
+#include <string.h>
+#include <errno.h>
+int
+main () {
+  char buffer[1024]; /* big enough to play with */
+  int error =
+    strerror_r(EACCES, buffer, sizeof(buffer));
+    /* This should've returned zero, and written an error string in the
+       buffer.*/
+    if(!buffer[0] || error)
+      return 99;
+    return 0;
+}
+#endif

Source/CTest/Curl/CMakeLists.txt

@@ -360,12 +360,46 @@ MACRO(CURL_INTERNAL_TEST CURL_TEST)
     ELSE(${CURL_TEST})
       MESSAGE(STATUS "Performing Curl Test ${CURL_TEST} - Failed")
       SET(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}")
-      WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log 
+      FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeError.log 
         "Performing Curl Test ${CURL_TEST} failed with the following output:\n"
-        "${OUTPUT}\n" APPEND)
+        "${OUTPUT}\n")
     ENDIF(${CURL_TEST})
   ENDIF("${CURL_TEST}" MATCHES "^${CURL_TEST}$")
 ENDMACRO(CURL_INTERNAL_TEST) 
+MACRO(CURL_INTERNAL_TEST_RUN CURL_TEST)
+  IF("${CURL_TEST}_COMPILE" MATCHES "^${CURL_TEST}_COMPILE$")
+    SET(MACRO_CHECK_FUNCTION_DEFINITIONS 
+      "-D${CURL_TEST} ${CMAKE_REQUIRED_FLAGS}")
+    IF(CMAKE_REQUIRED_LIBRARIES)
+      SET(CURL_TEST_ADD_LIBRARIES
+        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
+    ENDIF(CMAKE_REQUIRED_LIBRARIES)
+
+    MESSAGE(STATUS "Performing Curl Test ${CURL_TEST}")
+    TRY_RUN(${CURL_TEST} ${CURL_TEST}_COMPILE
+      ${CMAKE_BINARY_DIR}
+      ${LIBCURL_SOURCE_DIR}/CMake/CurlTests.c
+      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
+      "${CURL_TEST_ADD_LIBRARIES}"
+      OUTPUT_VARIABLE OUTPUT)
+    IF(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
+      SET(${CURL_TEST} 1 CACHE INTERNAL "Curl test ${FUNCTION}")
+      MESSAGE(STATUS "Performing Curl Test ${CURL_TEST} - Success")
+    ELSE(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
+      MESSAGE(STATUS "Performing Curl Test ${CURL_TEST} - Failed")
+      SET(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}")
+      FILE(APPEND "${CMAKE_BINARY_DIR}/CMakeError.log"
+        "Performing Curl Test ${CURL_TEST} failed with the following output:\n"
+        "${OUTPUT}")
+      IF(${CURL_TEST}_COMPILE)
+        FILE(APPEND "${CMAKE_BINARY_DIR}/CMakeError.log" 
+          "There was a running problem of this test\n")
+      ENDIF(${CURL_TEST}_COMPILE)
+      FILE(APPEND "${CMAKE_BINARY_DIR}/CMakeError.log" 
+        "\n\n")
+    ENDIF(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
+  ENDIF("${CURL_TEST}_COMPILE" MATCHES "^${CURL_TEST}_COMPILE$")
+ENDMACRO(CURL_INTERNAL_TEST_RUN) 
 
 # Do curl specific tests
 #OPTION(CURL_HAVE_DISABLED_NONBLOCKING "Disable non-blocking socket detection" OFF)
@@ -376,6 +410,7 @@ IF(NOT CURL_HAVE_DISABLED_NONBLOCKING)
     HAVE_IOCTLSOCKET
     HAVE_IOCTLSOCKET_CASE
     HAVE_O_NONBLOCK
+    HAVE_SO_NONBLOCK
     )
 ENDIF(NOT CURL_HAVE_DISABLED_NONBLOCKING)
 FOREACH(CURL_TEST 
@@ -408,6 +443,13 @@ IF(HAVE_FILE_OFFSET_BITS)
   SET(_FILE_OFFSET_BITS 64)
 ENDIF(HAVE_FILE_OFFSET_BITS)
 
+FOREACH(CURL_TEST 
+    HAVE_GLIBC_STRERROR_R
+    HAVE_POSIX_STRERROR_R
+    )
+  CURL_INTERNAL_TEST_RUN(${CURL_TEST})
+ENDFOREACH(CURL_TEST)
+
 # Check for reentrant
 FOREACH(CURL_TEST
     HAVE_GETHOSTBYADDR_R_5