Add build information to --version-full

If the Jenkins build information is available, print it in the full
version output.

Author: Timofey Turenko

CMakeLists.txt

@@ -162,6 +162,13 @@ if(${MAXSCALE_VERSION} MATCHES "-stable")
   endif()
 endif()
 
+# Copy cmake_flags, JENKINS_BUILD_TAG, source and value evironmental variables
+# into cmake variables. These are used by the build system to store information
+# about the packages being built.
+set(MAXSCALE_SOURCE "$ENV{source} $ENV{value}")
+set(MAXSCALE_CMAKE_FLAGS "$ENV{cmake_flags}")
+set(MAXSCALE_JENKINS_BUILD_TAG "$ENV{BUILD_TAG}")
+
 file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/server/include)
 configure_file(${CMAKE_SOURCE_DIR}/server/include/version.h.in ${CMAKE_BINARY_DIR}/server/include/version.h @ONLY)
 configure_file(${CMAKE_SOURCE_DIR}/server/include/gwdirs.h.in ${CMAKE_BINARY_DIR}/server/include/gwdirs.h @ONLY)

server/core/gateway.c

@@ -1341,6 +1341,18 @@ int main(int argc, char **argv)
             case 'V':
                 rc = EXIT_SUCCESS;
                 printf("MaxScale %s - %s\n", MAXSCALE_VERSION, maxscale_commit);
+                if (strcmp(MAXSCALE_SOURCE, " ") != 0)
+                {
+                    printf("Source:        %s\n", MAXSCALE_SOURCE);
+                }
+                if (strcmp(MAXSCALE_CMAKE_FLAGS, "") != 0)
+                {
+                    printf("CMake flags:   %s\n", MAXSCALE_CMAKE_FLAGS);
+                }
+                if (strcmp(MAXSCALE_JENKINS_BUILD_TAG, "") != 0)
+                {
+                    printf("Jenkins build: %s\n", MAXSCALE_JENKINS_BUILD_TAG);
+                }
                 goto return_main;
 
             case 'l':

server/include/version.h.in

@@ -1,2 +1,5 @@
 #define MAXSCALE_VERSION "@MAXSCALE_VERSION@"
 #define MAXSCALE_COMMIT "@MAXSCALE_COMMIT@"
+#define MAXSCALE_SOURCE "@MAXSCALE_SOURCE@"
+#define MAXSCALE_CMAKE_FLAGS "@MAXSCALE_CMAKE_FLAGS@"
+#define MAXSCALE_JENKINS_BUILD_TAG "@MAXSCALE_JENKINS_BUILD_TAG@"