Soften windows clang requirement (#7428)

This will no longer error if built with regular gcc on windows.  To help
triage issues that may come in related to different compilers, the runner now
reports the compier used by cgo.

llama/llama.go

@@ -68,6 +68,17 @@ package llama
 #include "sampling_ext.h"
 
 bool llamaProgressCallback(float progress, void *user_data);
+
+typedef enum {COMP_UNKNOWN,COMP_GCC,COMP_CLANG} COMPILER;
+COMPILER inline get_compiler() {
+#if defined(__clang__)
+	return COMP_CLANG;
+#elif defined(__GNUC__)
+	return COMP_GCC;
+#else
+	return UNKNOWN_COMPILER;
+#endif
+}
 */
 import "C"
 
@@ -88,7 +99,16 @@ func BackendInit() {
 }
 
 func PrintSystemInfo() string {
-	return C.GoString(C.llama_print_system_info())
+	var compiler string
+	switch C.get_compiler() {
+	case C.COMP_UNKNOWN:
+		compiler = "cgo(unknown_compiler)"
+	case C.COMP_GCC:
+		compiler = "cgo(gcc)"
+	case C.COMP_CLANG:
+		compiler = "cgo(clang)"
+	}
+	return C.GoString(C.llama_print_system_info()) + compiler
 }
 
 type ContextParams struct {

llama/make/common-defs.make

@@ -57,10 +57,6 @@ ifeq ($(OS),windows)
 	EXE_EXT := .exe
 	SHARED_PREFIX := 
 	CPU_FLAG_PREFIX := /arch:
-	_GCC_TEST:=$(findstring clang,$(shell gcc --version))
-	ifneq ($(_GCC_TEST),clang)
-$(error WRONG COMPILER DETECTED $(shell type gcc) - gcc must be a clang compat compiler on windows - see docs/development.md for setup instructions)
-	endif
 ifneq ($(HIP_PATH),)
 	# If HIP_PATH has spaces, hipcc trips over them when subprocessing
 	HIP_PATH := $(shell cygpath -m -s "$(patsubst %\,%,$(HIP_PATH))")

llama/runner/runner.go

@@ -874,7 +874,7 @@ func main() {
 	})
 	slog.SetDefault(slog.New(handler))
 	slog.Info("starting go runner")
-	slog.Debug("system info", "cpu", llama.PrintSystemInfo(), "threads", *threads)
+	slog.Info("system", "info", llama.PrintSystemInfo(), "threads", *threads)
 
 	server := &Server{
 		batchSize: *batchSize,