From 6e38cb160e885d896bda8d72d7b072a11d0de17b Mon Sep 17 00:00:00 2001
From: Krzosa Karol <krzosa.karol@gmail.com>
Date: Fri, 5 Jan 2024 13:41:29 +0100
Subject: [PATCH] Port bld cache to linux successfuly

---
 bld_file.cpp  | 37 ++++++++++++++++++++++++++++++++++---
 bld_lib.cpp   | 19 ++++++++++++++++++-
 bld_main.cpp  | 11 +++--------
 build.sh      |  2 +-
 preproc_env.h | 20 ++++++++++++++++++++
 5 files changed, 76 insertions(+), 13 deletions(-)

diff --git a/bld_file.cpp b/bld_file.cpp
index 8e15d1d..303aa9b 100644
--- a/bld_file.cpp
+++ b/bld_file.cpp
@@ -1,5 +1,35 @@
 #include "bld_lib.cpp"
 
+Strs cc = ON_WINDOWS("cl") ON_MAC("clang") ON_LINUX("gcc");
+
+int CompileFiles(Strs files) {
+    int result = 0;
+    Str exe = FilenameWithoutExt(files[0]);
+    Str filestr = Merge(files);
+    if (cc == "gcc") {
+        result = OS_SystemF("g++ -o %Q.exe %Q -g -Wno-write-strings", exe, filestr);
+    }
+    else if (cc == "clang") {
+        result = OS_SystemF("clang++ -o %Q.exe %Q -g -Wno-writable-strings", exe, filestr);
+    }
+    else {
+        result = OS_SystemF("cl -Fe:%Q.exe %Q -Zi -WX -W3 -wd4200 -diagnostics:column -nologo -D_CRT_SECURE_NO_WARNINGS", exe, filestr);
+    }
+    return result;
+}
+
+int Main() {
+    Strs files = ListDir("../test");
+    For(files) {
+        if (S8_Find(it, "test_"_s, 0, 0)) {
+            CompileFiles(it);
+        }
+    }
+
+    return 0;
+}
+
+#if 0 // msvc flag reference
 int Main() {
     bool debug = true;
     bool release = !debug;
@@ -9,7 +39,7 @@ int Main() {
     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");
+    // files += IfCodeWasModified("../core.c", "../core.obj"); // .o for linux!
     if (use_std) {
         flags += Split("-GR- -EHa-");
     }
@@ -32,8 +62,9 @@ int Main() {
             if (error != 0) return error;
         }
 
-        objs += S8_Format(Perm, "../build/%Q.obj", FilenameWithoutExt(it));
+        objs += S8_Format(Perm, "../build/%Q.obj", FilenameWithoutExt(it)); // .o for linux!
     }
     int error = Run(cc + objs + flags + link);
     return error;
-}
\ No newline at end of file
+}
+#endif
\ No newline at end of file
diff --git a/bld_lib.cpp b/bld_lib.cpp
index 1079e36..f7f403e 100644
--- a/bld_lib.cpp
+++ b/bld_lib.cpp
@@ -121,7 +121,7 @@ bool SRC_WasModified(S8_String file) {
 
     S8_String without_ext = S8_ChopLastPeriod(file);
     S8_String name_only = S8_SkipToLastSlash(without_ext);
-    S8_String obj = S8_Format(Perm, "%.*s.obj", S8_Expand(name_only));
+    S8_String obj = S8_Format(Perm, "%.*s.%s", S8_Expand(name_only), IF_WINDOWS_ELSE("obj", "o"));
     bool modified = OS_FileExists(obj) == false;
 
     SRC_CacheEntry *in_memory = SRC_HashFile(file, 0);
@@ -150,9 +150,19 @@ struct Strs : Array<Str> {
         *this = {};
         this->add(S8_MakeFromChar(str));
     }
+    Strs(Str a) {
+        *this = {};
+        this->add(a);
+    }
     Strs(Array<Str> a) { MA_MemoryCopy(this, &a, sizeof(a)); }
 };
 
+bool operator==(Strs a, char *b) {
+    if (a.len != 1) return false;
+    bool result = a[0] == S8_MakeFromChar(b);
+    return result;
+}
+
 Strs operator+(Strs a, Strs b) {
     Strs c = {a.copy(*Perm)};
     c.add_array(b);
@@ -258,6 +268,13 @@ int Run(Strs s) {
     return OS_SystemF("%Q", cmd);
 }
 
+Strs ListDir(char *dir) {
+    Strs result = {};
+    S8_List files = OS_ListDir(Perm, S8_MakeFromChar(dir), 0);
+    S8_For(it, files) result.add(it->string);
+    return result;
+}
+
 #ifndef BLD_MAIN
 int Main();
 int main() {
diff --git a/bld_main.cpp b/bld_main.cpp
index 798d31d..c785aaa 100644
--- a/bld_main.cpp
+++ b/bld_main.cpp
@@ -6,13 +6,7 @@ int main(int argument_count, char **arguments) {
     OS_SetWorkingDir(S8_Lit("build"));
     IO_Printf("WORKING DIR: %Q\n", OS_GetWorkingDir(Perm));
 
-#if OS_LINUX
-    S8_String cc = "gcc"_s;
-#elif OS_WINDOWS
-    S8_String cc = "cl"_s;
-#else
-    S8_String cc = "clang"_s;
-#endif
+    S8_String cc = ON_WINDOWS("cl"_s) ON_MAC("clang"_s) ON_LINUX("gcc"_s);
 
     for (int i = 1; i < argument_count; i += 1) {
         S8_String arg = S8_MakeFromChar(arguments[i]);
@@ -54,7 +48,8 @@ int main(int argument_count, char **arguments) {
         }
         else {
             IO_Assert(cc == "gcc"_s);
-            result = OS_SystemF("gcc -Wno-write-strings %Q -o %Q -g", build_file, exe_name);
+            if (result == 0) result = OS_SystemF("gcc -c -Wno-write-strings %Q -o %Q.o -g", build_file, b);
+            if (result == 0) result = OS_SystemF("gcc -Wno-write-strings %Q.o -o %Q -g", b, exe_name);
         }
 
         if (result != 0) {
diff --git a/build.sh b/build.sh
index 5f29ccf..1384491 100644
--- a/build.sh
+++ b/build.sh
@@ -2,7 +2,7 @@
 mkdir build
 cd build
 set -e
-gcc -o bld ../bld_main.cpp -fno-exceptions -fno-rtti -Wno-write-strings
+gcc -o bld ../bld_main.cpp -g -fno-exceptions -fno-rtti -Wno-write-strings
 cd ..
 ./build/bld
 # gcc -o test_filesystem ../test/test_filesystem.c -Wno-write-strings
diff --git a/preproc_env.h b/preproc_env.h
index 5253ba0..53f4e85 100644
--- a/preproc_env.h
+++ b/preproc_env.h
@@ -80,6 +80,26 @@
     #define FORCE_INLINE inline
 #endif
 
+#if OS_MAC
+    #define ON_MAC(x) x
+#else
+    #define ON_MAC(x)
+#endif
+
+#if OS_WINDOWS
+    #define ON_WINDOWS(x) x
+    #define IF_WINDOWS_ELSE(x, y) x
+#else
+    #define ON_WINDOWS(x)
+    #define IF_WINDOWS_ELSE(x, y) y
+#endif
+
+#if OS_LINUX
+    #define ON_LINUX(x) x
+#else
+    #define ON_LINUX(x)
+#endif
+
 // #if COMPILER_CLANG
 //     #pragma clang diagnostic push
 //     #pragma clang diagnostic ignored "-Wmicrosoft-enum-forward-reference"