Porting bld to linux

bld_file.cpp

@@ -0,0 +1,39 @@
+#include "bld_lib.cpp"
+
+int Main() {
+    bool debug = true;
+    bool release = !debug;
+    bool use_std = false;
+
+    Strs cc = "cl.exe";
+    Strs flags = Split("-WX -W3 -wd4200 -diagnostics:column -nologo -Z7 -FC -GF -Gm- -Oi -Zo -D_CRT_SECURE_NO_WARNINGS");
+    Strs link = Split("-link -incremental:no");
+    Strs files = Split("../test/main_core_as_header.cpp ../core.c");
+    // files += IfCodeWasModified("../core.c", "../core.obj");
+    if (use_std) {
+        flags += Split("-GR- -EHa-");
+    }
+    if (!use_std) {
+        flags += Split("-EHsc");
+    }
+    if (release) {
+        flags += Split("-O2 -MT -DNDEBUG -GL");
+        link += Split("-opt:ref -opt:icf -ltcg");
+    }
+    if (debug) {
+        flags += Split("-Od -D_DEBUG -MTd -fsanitize=address -MTd -RTC1");
+        link += Split("-NODEFAULTLIB:LIBCMT");
+    }
+
+    Strs objs = {};
+    For(files) {
+        if (CodeWasModified(it)) {
+            int error = Run(cc + it + flags + "-c" + link);
+            if (error != 0) return error;
+        }
+
+        objs += S8_Format(Perm, "../build/%Q.obj", FilenameWithoutExt(it));
+    }
+    int error = Run(cc + objs + flags + link);
+    return error;
+}