Merge pull request #392 from gemesa/compiler-version

Extend compiler version detection with clang

hcxdumptool.c

@@ -4547,10 +4547,12 @@ if(uname(&utsbuffer) == 0) fprintf(stdout, "running on Linux kernel %s\n", utsbu
 #if defined (__GLIBC__)
 fprintf(stdout, "running GNU libc version %s\n", gnu_get_libc_version());
 #endif
-#if defined (__GNUC__)
+#if defined(__clang__)
+fprintf(stdout, "compiled by clang %d.%d.%d\n", __clang_major__, __clang_minor__, __clang_patchlevel__);
+#elif defined(__GNUC__)
 fprintf(stdout, "compiled by gcc %d.%d.%d\n", __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__);
 #else
-fprintf(stdout, "compiler (__GNUC__) is not defined\n");
+fprintf(stdout, "compiler (__clang__ / __GNUC__) is not defined\n");
 #endif
 #if defined (LINUX_VERSION_MAJOR)
 fprintf(stdout, "compiled with Linux API headers %d.%d.%d\n", LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL, LINUX_VERSION_SUBLEVEL);