Another attempt to "detect" multiarch

1 files changed, 41 insertions, 9 deletions

diff --git a/conftest.c b/conftest.c
index a803bff..9eae11a 100644
--- a/conftest.c
+++ b/conftest.c
@@ -1,27 +1,59 @@
 #include <stdio.h>
 
+/* Define architecture */
+#if defined(__i386__)
+# define TRIPLET_ARCH "i386"
+#elif defined(__x86_64__)
+# define TRIPLET_ARCH "x86_64"
+#elif defined(__arm__)
+# define TRIPLET_ARCH "arm"
+#else
+# define TRIPLET_ARCH "unknown"
+#endif
+
+/* Define OS */
+#if defined (__linux__)
+# define TRIPLET_OS "linux"
+#elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
+# define TRIPLET_OS "kfreebsd"
+#elif !defined (__GNU__)
+# define TRIPLET_OS "unknown"
+#endif
+
+/* Define calling convention and ABI */
+#define TRIPLET_ABI "gnu"
+
+#ifdef __GNU__
+# define TRIPLET TRIPLET_ARCH "-" TRIPLET_ABI
+#else
+# define TRIPLET TRIPLET_ARCH "-" TRIPLET_OS "-" TRIPLET_ABI
+#endif
+
 int main(int argc, char *argv[])
 {
     switch(argc == 2 ? argv[1][0] : 0) {
-#ifdef __GNUC__
-        case 'v':
-            printf("%d\n", __GNUC__);
+        case 'b':
+        {
+            volatile unsigned foo = 0x01234567;
+            puts(*(unsigned char*)&foo == 0x67 ? "no" : "yes");
             break;
+        }
+#ifdef __GNUC__
         case 'm':
             printf("%d\n", __GNUC_MINOR__);
             break;
-#else
         case 'v':
+            printf("%d\n", __GNUC__);
+            break;
+#else
         case 'm':
+        case 'v':
             puts("0");
             break;
 #endif
-        case 'b':
-        {
-            volatile unsigned foo = 0x01234567;
-            puts(*(unsigned char*)&foo == 0x67 ? "no" : "yes");
+        case 't':
+            puts(TRIPLET);
             break;
-        }
         case -1:
             /* to test -Wno-unused-result */
             fread(NULL, 1, 1, NULL);