ENH: Rework the stuff for HAVE_SA_LEN

[gdcm.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4ebaa055b006fc2b71af1f71c9856dae4a85ebc7..82ea94e3deedecd09eddc6f3d622efb6a2711759 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,6 +62,36 @@ IF("GDCM_COMPILER_HAS_FUNCTION" MATCHES "^GDCM_COMPILER_HAS_FUNCTION$")
   ENDIF(GDCM_COMPILER_HAS_FUNCTION)
 ENDIF("GDCM_COMPILER_HAS_FUNCTION" MATCHES "^GDCM_COMPILER_HAS_FUNCTION$")
 
+#-----------------------------------------------------------------------------
+# Test if os defines a lenght for sockaddr
+IF("GDCM_OS_HAVE_SA_LEN" MATCHES "^GDCM_OS_HAVE_SA_LEN$")
+  MESSAGE(STATUS "Checking if ifreq has a sa_len")
+  STRING(ASCII 35 POUND)
+  FILE(WRITE ${GDCM_BINARY_DIR}/gdcmTestHAVESALEN.c
+    "${POUND}include <sys/types.h>\n"
+    "${POUND}include <sys/socket.h>\n"
+    "int main() { struct sockaddr sa; sa.sa_len = 0; }")
+  TRY_COMPILE(GDCM_OS_HAVE_SA_LEN
+              ${GDCM_BINARY_DIR}/CMakeTmp/HaveSaLen
+              ${GDCM_BINARY_DIR}/gdcmTestHAVESALEN.c
+              OUTPUT_VARIABLE OUTPUT)
+  IF(GDCM_OS_HAVE_SA_LEN)
+    MESSAGE(STATUS "Checking if ifreq has a sa_len -- yes")
+    SET(GDCM_OS_HAVE_SA_LEN 1 CACHE INTERNAL "Support if ifreq has a sa_len")
+    WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log
+      "Determining if ifreq has a sa_len"
+      "passed with the following output:\n"
+      "${OUTPUT}\n" APPEND)
+  ELSE(GDCM_OS_HAVE_SA_LEN)
+    MESSAGE(STATUS "Checking if ifreq has a sa_len -- no")
+    SET(GDCM_OS_HAVE_SA_LEN 0 CACHE INTERNAL "Support if ifreq has a sa_len")
+    WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
+      "Determining if ifreq has a sa_len"
+      "failed with the following output:\n"
+      "${OUTPUT}\n" APPEND)
+  ENDIF(GDCM_OS_HAVE_SA_LEN)
+ENDIF("GDCM_OS_HAVE_SA_LEN" MATCHES "^GDCM_OS_HAVE_SA_LEN$")
+
 #-----------------------------------------------------------------------------
 # Build directory on which many applications depend
 SUBDIRS(