Add building lcc as an APE executable

lcc/.gitignore

@@ -0,0 +1,2 @@
+.vscode
+knob

lcc/README.md

@@ -0,0 +1,24 @@
+To build LCC as an [APE executable](https://justine.lol/ape.html) that can be run on pretty much all the OS's, follow these steps:
+
+
+Download cosmocc toolchain and unzip it in cosmocc dir:
+
+```sh
+cd cosmocc
+wget https://cosmo.zip/pub/cosmocc/cosmocc.zip
+unzip cosmocc.zip
+```
+
+Then compile the "build script" and run it:
+> Sidenote: You can actually debug the "build script" if you pass `-ggdb3` to the command
+```sh
+cc -o knob knob.c
+./knob
+```
+
+You should then have in the build directory:
+- q3rcc.com
+- q3cpp.com
+- lcc.com
+
+These binaries can run on Windows,Mac OS X, Linux, FreeBSD, OpenBSD, etc.

lcc/cosmocc/.gitignore

@@ -0,0 +1,8 @@
+# Run these commands in this directory: 
+#   wget https://cosmo.zip/pub/cosmocc/cosmocc.zip
+#   unzip cosmocc.zip
+
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore

lcc/cpp/unix.c

@@ -106,7 +106,7 @@ char *basepath( char *fname )
    all and others do a terrible job (like calling malloc) */
 // -- ouch, that hurts -- ln
 /* always use the system memmove() on Mac OS X. --ryan. */
-#if !defined(__APPLE__) && !defined(_MSC_VER)
+#if !defined(__APPLE__) && !defined(_MSC_VER) && !defined(COSMOPOLITAN)
 #ifdef memmove
 #undef memmove
 #endif

lcc/etc/bytecodelcc.c

@@ -6,6 +6,9 @@
 #ifdef _WIN32
 #define BINEXT ".exe"
 #define PATH_SEP '\\'
+#elif defined(COSMOPOLITAN)
+#define BINEXT ".com"
+#define PATH_SEP '/'
 #else
 #define BINEXT ""
 #define PATH_SEP '/'

lcc/knob.c

@@ -0,0 +1,69 @@
+#define KNOB_IMPLEMENTATION
+#include "knob.h"
+
+
+MAIN(lcc_build){
+
+    const char* program = knob_shift_args(&argc,&argv);
+    char* subcommand = NULL;
+    if(argc <= 0){
+        subcommand = "build";
+    } else {
+        subcommand = (char*)knob_shift_args(&argc,&argv);
+    }
+
+    char cwd[260] = {0};
+    getcwd(cwd,260);
+    compiler_names[COMPILER_COSMOCC][0] = knob_temp_sprintf("%s/cosmocc/bin/cosmocc",cwd);
+    #define NUM_EXE 3
+    const char* src_dir[NUM_EXE] = {"./src","./cpp","./etc"};
+    const char* exe_name[NUM_EXE] = {"q3rcc.com","q3cpp.com","lcc.com"};
+    for(int i =0; i < NUM_EXE;++i){
+        Knob_Cmd cmd = {0};
+        Knob_Config config = {0};
+        knob_config_init(&config);
+        config.compiler = COMPILER_COSMOCC;
+
+        Knob_File_Paths files = {0};
+        knob_da_mult_append(&files,
+            src_dir[i]
+        );
+        config.build_to = "."PATH_SEP"build";
+        knob_config_add_files(&config,files.items,files.count);
+        files.count = 0;
+        knob_da_mult_append(&files,
+            src_dir[i]
+        );
+        knob_config_add_includes(&config,files.items,files.count);
+        knob_config_add_c_flag(&config,"-fno-strict-aliasing");
+        knob_config_add_c_flag(&config,"-fmessage-length=0");
+        knob_config_add_c_flag(&config,"-fno-common");
+        knob_config_add_c_flag(&config,"-Wall");
+        knob_config_add_c_flag(&config,"-Wno-misleading-indentation");
+        knob_config_add_c_flag(&config,"-O0");
+        knob_config_add_define(&config,"-DCOSMOPOLITAN");
+
+
+        Knob_File_Paths out_files = {0};
+        if(!knob_config_build(&config,&out_files,0))return 1;
+
+
+        cmd.count = 0;
+
+        knob_cmd_add_compiler(&cmd,&config);
+        knob_cmd_add_includes(&cmd,&config);
+        for(int i =0; i < out_files.count;++i){
+            knob_cmd_append(&cmd,out_files.items[i]);
+        }
+
+        knob_cmd_append(&cmd,"-o",knob_temp_sprintf("./build/%s",exe_name[i]));
+        knob_cmd_append(&cmd,"-lm");
+
+        Knob_String_Builder render = {0};
+        knob_cmd_render(cmd,&render);
+        knob_log(KNOB_INFO,"CMD: %s",render.items);
+        if(!knob_cmd_run_sync(cmd)) return 1;
+    }
+
+    return 0;
+}