HPy unit tests: use 'gcc' without a full path

Author: steve-s

graalpython/lib-graalpython/modules/hpy/test/support.py

@@ -317,8 +317,8 @@ def change_compiler(conf, cc, cxx, stdlib):
                     cxx = join(llvm_toolchain_vanilla, 'clang++')
                     stdlib = "libc++"
                 else:
-                    cc = join(os.path.sep, 'usr', 'bin', 'gcc')
-                    cxx = join(os.path.sep, 'usr', 'bin', 'g++')
+                    cc = 'gcc'
+                    cxx = 'g++'
                     stdlib = None
             change_compiler(conf, cc, cxx, stdlib)