Update cmake to allow C++ and fix maxos compile error

Signed-off-by: Anita Anderson <anita@ansan.io>

.editorconfig

@@ -0,0 +1,7 @@
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

CMakeLists.txt

@@ -1,21 +1,26 @@
 cmake_minimum_required(VERSION 3.21)
-project(Erythro C)
+project(Erythro C CXX)
 
 set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 include_directories(include)
 
-add_executable(Erythro
-        include/Data.h
-        include/Defs.h
-        src/Assembler.c
-        src/Delegate.c
-        src/Dump.c
-        src/Lexer.c
-        src/Main.c
-        src/Parser.c
-        src/Pointers.c
-        src/Statements.c
-        src/Symbols.c
-        src/Types.c
-        src/Importer.c)
+set(ERYTHRO_SRC
+  src/Assembler.c
+  src/Delegate.c
+  src/Dump.c
+  src/Lexer.c
+  src/Main.c
+  src/Parser.c
+  src/Pointers.c
+  src/Statements.c
+  src/Symbols.c
+  src/Types.c
+  src/Importer.c
+)
+
+add_executable(eryc ${ERYTHRO_SRC})

src/Importer.c

@@ -12,13 +12,18 @@
 #include <limits.h>
 #include <sys/stat.h>
 
+#ifdef __APPLE__
+#include <errno.h>
+#endif
+
+
 /**
  * The function of the importer is to read in definitions from a file, and store
  * them into the symbol tables.
- * 
+ *
  * The file to be imported is called a "module", which is Erythro terminology for C-like "headers".
  * They contain extra metadata that allows for Erythro's enhanced debugging and error logging.
- * 
+ *
  * Modules may also contain metadata about the contents within - allowing for multiple compile-time
  * sourcesets with different arguments, all parsed at the same time as the source code.
  *
@@ -30,12 +35,12 @@
 /**
  * Read in the information of a module, check that it is valid, and then read the module itself.
  * Import syntax looks like:
- * 
+ *
  * > import "file"
  *
  * The string is appended to the current working directory and is checked.
  * If the resulting path exists and resolves to a file, then the file's declarations are added to the symbol tables.
- * 
+ *
  * Modules may not contain definitions. Only declarations
  * TODO: Module metadata as described above.
  */
@@ -44,7 +49,7 @@
     Tokenise();
 
     // Make sure there's a string after the import.
-    if (CurrentFile->CurrentSymbol.type != LI_STR) 
+    if (CurrentFile->CurrentSymbol.type != LI_STR)
         Die("Import statement must be followed by a compile-time constant string.");
 
     // Read in the string that we know must be there.
@@ -53,9 +58,9 @@
     // Figure out the working directory
     char CWD[PATH_MAX];
 
-    if (getcwd(CWD, sizeof(CWD)) == NULL) 
+    if (getcwd(CWD, sizeof(CWD)) == NULL)
         DieMessage("Unable to find cwd when importing module", Module);
-    
+
     // Append the module name to the current working directory
     char* ModulePath = malloc(sizeof(CWD) + sizeof(Module) + 1);
     strcpy(ModulePath, CWD);
@@ -65,7 +70,7 @@
 
     // Stat the file to see if it exists
     struct stat FileInfo;
-    if (stat(ModulePath, &FileInfo) != 0) 
+    if (stat(ModulePath, &FileInfo) != 0)
         DieMessage("Unable to access the imported module", ModulePath);
 
     // At this point, the file exists and we have the path.
@@ -77,7 +82,7 @@
     memset(ModuleData, 0, sizeof(struct FileData));
     ModuleData->AllowDefinitions = false;
     ModuleData->SourceName = ModulePath;
-    
+
     printf("Swapping to module %s..\n\n", ModulePath);
 
     // Parse all relevant data from the module file...
@@ -99,4 +104,4 @@
     // Tokenise past the string we just parsed
     Tokenise();
 
- }
+ }