Fix gcc line in Makefile for Linux

I needed this change for `make` to succeed on Fedora 41. Not sure if this is the right way to do this, so I'm open to suggestions. I haven't tested this on other Linux distros.

Makefile

@@ -485,7 +485,7 @@ ifeq ($(GOOS),darwin)
 to_uname_m = $(foreach arch,$(1),$(shell echo $(arch) | sed 's/amd64/x86_64/'))
 else ifeq ($(GOOS),linux)
 # CC is required for cross-compiling on Linux.
-CC = $(call to_uname_m,$(GOARCH))-linux-gnu-gcc
+CC = gcc
 else ifeq ($(GOOS),windows)
 # artifact in zip format also provided for Windows.
 ARTIFACT_FILE_EXTENSIONS += .zip