get version from git tag

CMakeLists.txt

@@ -7,6 +7,19 @@ set(CMAKE_CUDA_COMPILER $ENV{CUDA_HOME}/bin/nvcc)
 enable_language(CUDA)
 include_directories($ENV{CUDA_HOME}/include)
 
+# VERSIONING
+execute_process(
+        COMMAND git rev-parse --is-inside-work-tree
+        OUTPUT_VARIABLE GIT_REPO OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+if (GIT_REPO)
+    execute_process (
+            COMMAND bash -c "echo $(git describe --dirty --always --tags) | tr - +"
+            OUTPUT_VARIABLE git_version
+    )
+    add_definitions(-DTS_VERSION=${git_version})
+endif()
+
 set(target ts)
 add_executable(
         ${target}

Makefile

@@ -22,6 +22,11 @@ OBJECTS=main.o \
 TARGET=ts
 INSTALL=install -c
 
+GIT_REPO=$(shell git rev-parse --is-inside-work-tree)
+ifdef GIT_REPO
+GIT_VERSION=$(shell echo $(shell git describe --dirty --always --tags) | tr - +)
+endif
+
 all: $(TARGET)
 
 $(TARGET): $(OBJECTS)
@@ -32,6 +37,7 @@ $(TARGET): $(OBJECTS)
 
 # Dependencies
 main.o: main.c main.h
+	$(CC) $(CFLAGS) $(CPPFLAGS) -DTS_VERSION=$(GIT_VERSION) -c $< -o $@
 server_start.o: server_start.c main.h
 server.o: server.c main.h
 client.o: client.c main.h

client.c

@@ -922,16 +922,3 @@ void c_set_logdir() {
     send_msg(server_socket, &m);
     send_bytes(server_socket, command_line.label, m.u.size);
 }
-
-static void shuffle(int *array, size_t n) {
-    if (n > 1) {
-        size_t i;
-        srand(time(NULL));
-        for (i = 0; i < n - 1; i++) {
-            size_t j = i + rand() / (RAND_MAX / (n - i) + 1);
-            int t = array[j];
-            array[j] = array[i];
-            array[i] = t;
-        }
-    }
-}

main.c

@@ -4,6 +4,13 @@
 
     Please find the license in the provided COPYING file.
 */
+#define TS_VERSION_FALLBACK "1.3.0"
+
+/* from https://github.com/LLNL/lbann/issues/117
+ * and https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html#Stringizing */
+#define TS_MAKE_STR(x) _TS_MAKE_STR(x)
+#define _TS_MAKE_STR(x) #x
+
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
@@ -28,9 +35,18 @@ int term_width;
 static char getopt_env[] = "POSIXLY_CORRECT=YES";
 static char *old_getopt_env;
 
-static char version[] = "Task Spooler v1.2 - a task queue system for the unix user.\n"
-                        "Copyright (C) 2007-2020  Duc Nguyen - Lluis Batlle i Rossell";
-
+static char version[1024];
+
+static void init_version() {
+#ifdef TS_VERSION
+    char *ts_version = TS_MAKE_STR(TS_VERSION);
+    sprintf(version, "Task Spooler %s - a task queue system for the unix user.\n"
+                     "Copyright (C) 2007-2020  Duc Nguyen - Lluis Batlle i Rossell", ts_version);
+#else
+    sprintf(version, "Task Spooler %s - a task queue system for the unix user.\n"
+                     "Copyright (C) 2007-2020  Duc Nguyen - Lluis Batlle i Rossell", TS_VERSION_FALLBACK);
+#endif
+}
 
 static void default_command_line() {
     command_line.request = c_LIST;
@@ -446,7 +462,7 @@ static void print_help(const char *cmd) {
     printf("  --unsetenv   [var]              remove the specified flag from server environment.\n");
     printf("  --set_gpu_free_perc   [num]     set the value of GPU memory threshold above which GPUs are considered available (90 by default).\n");
     printf("  --get_gpu_free_perc             get the value of GPU memory threshold above which GPUs are considered available.\n");
-    printf("  --unsetenv   <var>              remove the specified flag from server environment.\n");
+    printf("  --unsetenv   [var]              remove the specified flag from server environment.\n");
     printf("  --get_label      || -a [id]     show the job label. Of the last added, if not specified.\n");
     printf("  --full_cmd       || -F [id]     show full command. Of the last added, if not specified.\n");
     printf("  --count_running  || -R          return the number of running jobs\n");
@@ -516,6 +532,7 @@ static void get_terminal_width() {
 int main(int argc, char **argv) {
     int errorlevel = 0;
 
+    init_version();
     get_terminal_width();
     process_type = CLIENT;