Fix typos in comments (#57)

* Check C and C++ compiler separately

It's possible (however unlikely) that the C++ compiler might be clang
but the C compiler might not be.

* Don't overwrite user-specified CFLAGS and CXXFLAGS

CMakeLists.txt

@@ -10,9 +10,13 @@ set(CMAKE_C_STANDARD_REQUIRED TRUE)
 set(CMAKE_C_EXTENSIONS FALSE)
 
 if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+        # Clang or AppleClang
+        set(CMAKE_CXX_FLAGS "-Wall ${CMAKE_CXX_FLAGS}")
+endif()
+
+if ("${CMAKE_C_COMPILER_ID}" MATCHES "Clang")
 	# Clang or AppleClang
-	set(CMAKE_CXX_FLAGS "-Wall")
-	set(CMAKE_C_FLAGS "-Wall")
+	set(CMAKE_C_FLAGS "-Wall ${CMAKE_C_FLAGS}")
 endif()
 
 

bin/loader.cpp

@@ -957,10 +957,19 @@ int main(int argc, char **argv)
 
 #ifdef LOADER_LOAD
 	uint16_t err = Loader::Native::LoadFile(command);
-	if (err) exit(EX_CONFIG);
+	if (err) {
+		const char *cp = ErrorName(err);
+		fprintf(stderr, "Unable to load command %s: ", command.c_str());
+		if (cp) printf("%s\n", cp);
+		else printf("%hd\n", err);
+		exit(EX_SOFTWARE);
+	}
 #else
 	uint32_t address = load(command.c_str());
-	if (!address) exit(EX_CONFIG);
+	if (!address) {
+		fprintf(stderr, "Unable to load command %s\n", command.c_str());
+		exit(EX_SOFTWARE);
+	}
 #endif
 	GlobalInit();
 

toolbox/os_highlevel.cpp

@@ -83,8 +83,8 @@ namespace OS {
 	{
 		char buffer[PATH_MAX + 1];
 
-		// FSSpecs are valid for non-existant files
-		// but not non-existant directories.
+		// FSSpecs are valid for non-existent files
+		// but not non-existent directories.
 		// realpath does not behave in such a manner.
 
 		// expand the path.  Also handles relative paths.