From a6501b5d7ad204c3b998c843c7ed68ef7be323ba Mon Sep 17 00:00:00 2001
From: gramanas <anastasis.gramm2@gmail.com>
Date: Wed, 5 Jun 2024 19:04:25 +0300
Subject: more vks, stupid mutlistep build, and imgui

---
 b.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 126 insertions(+), 9 deletions(-)

(limited to 'b.c')

diff --git a/b.c b/b.c
index 0221fff..db24cdd 100644
--- a/b.c
+++ b/b.c
@@ -1,18 +1,64 @@
 #define B_IMPLEMENTATION
 #include "src/b.h"
 
-void cflags(B_Cmd *cmd)
+int debug_level = 1;
+
+void
+debug_or_release(B_Cmd* cmd)
+{
+  if (debug_level == 0)
+    b_cmd_append(cmd, "-O3", "-s");
+  else if (debug_level == 1)
+    b_cmd_append(cmd, "-O2", "-ggdb", "-DVKDEBUG");
+  else if (debug_level == 2)
+    b_cmd_append(cmd, "-O1", "-ggdb", "-DVKDEBUG");
+  else
+    b_cmd_append(cmd, "-O0", "-ggdb", "-DVKDEBUG");
+}
+
+void
+inlcude_dirs(B_Cmd* cmd)
+{
+  b_cmd_append(cmd, "-I./src/");
+  b_cmd_append(cmd, "-I./lib");
+  b_cmd_append(cmd, "-I./lib/imgui-1.90.7");
+}  
+
+void
+cflags(B_Cmd* cmd)
+{
+  b_cmd_append(cmd, "-Wall", "-Wextra");
+
+  debug_or_release(cmd);
+
+  b_cmd_append(cmd, "-march=native");
+  b_cmd_append(cmd, "-fno-math-errno", "-funroll-loops");
+  b_cmd_append(cmd, "-flto", "-pthread");
+
+  inlcude_dirs(cmd);
+}
+
+void cxxflags(B_Cmd *cmd)
 {
   b_cmd_append(cmd, "-Wall", "-Wextra");
   b_cmd_append(cmd, "-Wno-string-plus-int", "-Wno-nullability-completeness", "-Wno-unused-function", "-Wno-missing-field-initializers", "-Wno-unused-parameter", "-Wno-unused-variable");
+
+  debug_or_release(cmd);
+
   b_cmd_append(cmd, "-march=native");
   b_cmd_append(cmd, "-fno-math-errno", "-funroll-loops");
   b_cmd_append(cmd, "-flto", "-pthread");
-  b_cmd_append(cmd, "-I./src/");
-  b_cmd_append(cmd, "-O2", "-ggdb", "-DVKDEBUG");
+
+  inlcude_dirs(cmd);
   //b_cmd_append(cmd, "-O3");
 }
 
+void cxx(B_Cmd *cmd)
+{
+  b_cmd_append(cmd, "clang");
+  cxxflags(cmd);
+}
+
 void cc(B_Cmd *cmd)
 {
   b_cmd_append(cmd, "clang");
@@ -24,9 +70,17 @@ void libs(B_Cmd *cmd)
   b_cmd_append(cmd, "-lSDL2", "-lm", "-lvulkan", "-lshaderc_shared", "-lstdc++");
 }
 
-bool build_exe(bool force, B_Cmd *cmd, const char **input_paths, size_t input_paths_len, const char **dep_paths, size_t dep_paths_len, const char *output_path)
+bool
+build_c(bool         force,
+        B_Cmd*       cmd,
+        const char** input_paths,
+        size_t       input_paths_len,
+        const char** dep_paths,
+        size_t       dep_paths_len,
+        const char*  output_path)
 {
-  int rebuild_is_needed = b_needs_rebuild(output_path, input_paths, input_paths_len);
+  int rebuild_is_needed =
+    b_needs_rebuild(output_path, input_paths, input_paths_len);
   int dep_rebuild = b_needs_rebuild(output_path, dep_paths, dep_paths_len);
   
   if (rebuild_is_needed < 0 || dep_rebuild < 0) return false;
@@ -44,6 +98,34 @@ bool build_exe(bool force, B_Cmd *cmd, const char **input_paths, size_t input_pa
   return true;
 }
 
+bool
+compile_cxx(bool         force,
+            B_Cmd*       cmd,
+            const char** input_paths,
+            size_t       input_paths_len,
+            const char** dep_paths,
+            size_t       dep_paths_len,
+            const char*  output_path)
+{
+  int rebuild_is_needed = b_needs_rebuild(output_path, input_paths, input_paths_len);
+  int dep_rebuild = b_needs_rebuild(output_path, dep_paths, dep_paths_len);
+  
+  if (rebuild_is_needed < 0 || dep_rebuild < 0) return false;
+
+  if (force || rebuild_is_needed || dep_rebuild) {
+    cmd->count = 0;
+    cxx(cmd);
+    b_cmd_append(cmd, "-c");
+    //b_cmd_append(cmd, "-o", output_path);
+    b_da_append_many(cmd, input_paths, input_paths_len);
+    //libs(cmd);
+    return b_cmd_run_sync(*cmd);
+  }
+
+  b_log(B_INFO, "%s is up-to-date", output_path);
+  return true;
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -63,17 +145,52 @@ main(int argc, char *argv[])
     }
   }
 
-  const char *dep_paths[] = {
+  const char *cxx_dep_paths[] = {
+    "src/vksetup.h",
+  };
+  const char* cxx_input_paths[] = {
+    "src/cplusplus.cpp",
+    "lib/imgui-1.90.7/imgui.cpp",
+    "lib/imgui-1.90.7/imgui_demo.cpp",
+    "lib/imgui-1.90.7/imgui_draw.cpp",
+    "lib/imgui-1.90.7/imgui_tables.cpp",
+    "lib/imgui-1.90.7/imgui_widgets.cpp",
+    "lib/imgui-1.90.7/backends/imgui_impl_sdl2.cpp",
+    "lib/imgui-1.90.7/backends/imgui_impl_vulkan.cpp",
+  };
+  
+  const char *c_dep_paths[] = {
     "src/state.h",
     "src/vksetup.h",
   };
-  const char *input_paths[] = {
+  const char* c_input_paths[] = {
     "src/render.c",
-    "src/cplusplus.cpp"
+    "cplusplus.o",
+    "imgui.o",
+    "imgui_demo.o",
+    "imgui_draw.o",
+    "imgui_tables.o",
+    "imgui_widgets.o",
+    "imgui_impl_sdl2.o",
+    "imgui_impl_vulkan.o",
   };
 
   B_Cmd cmd = {0};
-  if (!build_exe(force, &cmd, input_paths, B_ARRAY_LEN(input_paths), dep_paths, B_ARRAY_LEN(dep_paths),"render")) return 1;
+  if (!compile_cxx(force, &cmd, cxx_input_paths, B_ARRAY_LEN(cxx_input_paths), cxx_dep_paths, B_ARRAY_LEN(c_dep_paths),"cplusplus.o")) return 1;
+  if (!build_c(force, &cmd, c_input_paths, B_ARRAY_LEN(c_input_paths), c_dep_paths, B_ARRAY_LEN(c_dep_paths),"render")) return 1;
 
   return 0;
 }
+
+/*
+  1. Build list of <object>.cpp (with <dep>s) -> into build/cxx/<object>/<dep>.o
+  2. Build list of <object>.c (with <dep>s)   -> into build/c/<object>/<dep>.o
+
+  3. Build <target>.c linking with the objects from 1 & 2 -> into <target>
+
+  Check for rebuilds:
+    1. <object.cpp> and <dep>s
+    2. <object.c> and <dep>s
+    3. <target.c> and all links {cxx,c}/ * / *.o
+
+*/
-- 
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