Factor out src_build/configurer.c

nob.c

@@ -8,64 +8,7 @@
 
 #define NOB_IMPLEMENTATION
 #include "./nob.h"
-
-#define CONFIG_PATH "./build/config.h"
-
-void generate_default_config(Nob_String_Builder *content)
-{
-    nob_sb_append_cstr(content, "//// Build target. Pick only one!\n");
-#ifdef _WIN32
-#   if defined(_MSC_VER)
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_LINUX\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_WIN64_MINGW\n");
-    nob_sb_append_cstr(content, "#define MUSIALIZER_TARGET_WIN64_MSVC\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_MACOS\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_OPENBSD\n");
-#   else
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_LINUX\n");
-    nob_sb_append_cstr(content, "#define MUSIALIZER_TARGET_WIN64_MINGW\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_WIN64_MSVC\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_MACOS\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_OPENBSD\n");
-#   endif
-#elif defined (__APPLE__) || defined (__MACH__)
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_LINUX\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_WIN64_MINGW\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_WIN64_MSVC\n");
-    nob_sb_append_cstr(content, "#define MUSIALIZER_TARGET_MACOS\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_OPENBSD\n");
-#elif defined(__OpenBSD__)
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_LINUX\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_WIN64_MINGW\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_WIN64_MSVC\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_MACOS\n");
-    nob_sb_append_cstr(content, "#define MUSIALIZER_TARGET_OPENBSD\n");
-#else
-    nob_sb_append_cstr(content, "#define MUSIALIZER_TARGET_LINUX\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_WIN64_MINGW\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_WIN64_MSVC\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_MACOS\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_TARGET_OPENBSD\n");
-#endif
-
-    nob_sb_append_cstr(content, "\n");
-    nob_sb_append_cstr(content, "//// Moves everything in src/plug.c to a separate \"DLL\" so it can be hotreloaded. Works only for Linux right now\n");
-    // TODO: FIX ASAP! This requires bootstrapping nob with additional flags which goes against its philosophy!
-#ifdef MUSIALIZER_HOTRELOAD
-    nob_sb_append_cstr(content, "#define MUSIALIZER_HOTRELOAD\n");
-#else
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_HOTRELOAD\n");
-#endif
-    nob_sb_append_cstr(content, "\n");
-    nob_sb_append_cstr(content, "//// Don't bundle resources/ folder with the executable and load the resources directly from the folder.\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_UNBUNDLE\n");
-    nob_sb_append_cstr(content, "\n");
-    nob_sb_append_cstr(content, "//// Unfinished feature that enables capturing sound from the mic.\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_MICROPHONE\n");
-    nob_sb_append_cstr(content, "\n");
-    nob_sb_append_cstr(content, "//// Activate UI buttons on Press instead of Release just as John Carmack explained https://twitter.com/ID_AA_Carmack/status/1787850053912064005\n");
-    nob_sb_append_cstr(content, "// #define MUSIALIZER_ACT_ON_PRESS\n");
-}
+#include "./src_build/configurer.c"
 
 int main(int argc, char **argv)
 {
@@ -87,17 +30,22 @@ int main(int argc, char **argv)
 
     if (!nob_mkdir_if_not_exists("build")) return 1;
 
+    Nob_String_Builder content = {0};
     int config_exists = nob_file_exists(CONFIG_PATH);
     if (config_exists < 0) return 1;
     if (config_exists == 0) {
         nob_log(NOB_INFO, "Generating %s", CONFIG_PATH);
-        Nob_String_Builder content = {0};
         generate_default_config(&content);
         if (!nob_write_entire_file(CONFIG_PATH, content.items, content.count)) return 1;
     } else {
         nob_log(NOB_INFO, "file `%s` already exists", CONFIG_PATH);
     }
 
+    nob_log(NOB_INFO, "Generating build/config_logger.c");
+    content.count = 0;
+    generate_config_logger(&content);
+    if (!nob_write_entire_file("build/config_logger.c", content.items, content.count)) return 1;
+
     Nob_Cmd cmd = {0};
     const char *configured_binary = "build/nob.configured";
     nob_cmd_append(&cmd, NOB_REBUILD_URSELF(configured_binary, "./src_build/nob_configured.c"));

src_build/configurer.c

@@ -0,0 +1,130 @@
+#define RAYLIB_VERSION "5.0"
+#define CONFIG_PATH "./build/config.h"
+
+typedef struct {
+    const char *macro;
+    bool enabled_by_default;
+} Target_Flag;
+
+static Target_Flag target_flags[] = {
+    {
+        .macro = "MUSIALIZER_TARGET_LINUX",
+        #if defined(linux) || defined(__linux) || defined(__linux__)
+            .enabled_by_default = true,
+        #else
+            .enabled_by_default = false,
+        #endif
+    },
+    {
+        .macro = "MUSIALIZER_TARGET_WIN64_MINGW",
+        #if (defined(WIN32) || defined(_WIN32)) && defined(__MINGW32__)
+            .enabled_by_default = true,
+        #else
+            .enabled_by_default = false,
+        #endif
+    },
+    {
+        .macro = "MUSIALIZER_TARGET_WIN64_MSVC",
+        #if (defined(WIN32) || defined(_WIN32)) && defined(_MSC_VER)
+            .enabled_by_default = true,
+        #else
+            .enabled_by_default = false,
+        #endif
+    },
+    {
+        .macro = "MUSIALIZER_TARGET_MACOS",
+        #if defined(__APPLE__) || defined(__MACH__)
+            .enabled_by_default = true,
+        #else
+            .enabled_by_default = false,
+        #endif
+    },
+    {
+        .macro = "MUSIALIZER_TARGET_OPENBSD",
+        #if defined(__OpenBSD__)
+            .enabled_by_default = true,
+        #else
+            .enabled_by_default = false,
+        #endif
+    },
+};
+
+typedef struct {
+    const char *display;
+    const char *macro;
+    const char *description;
+} Feature_Flag;
+
+static Feature_Flag feature_flags[] = {
+    {
+        .display = "Hotreload",
+        .macro = "MUSIALIZER_HOTRELOAD",
+        .description = "Moves everything in src/plug.c to a separate \"DLL\" so it can be hotreloaded.",
+    },
+    {
+        .display = "Unbundle",
+        .macro = "MUSIALIZER_UNBUNDLE",
+        .description = "Don't bundle resources/ folder with the executable and load the resources directly from the folder.",
+    },
+    {
+        .display = "Microphone",
+        .macro = "MUSIALIZER_MICROPHONE",
+        .description = "Unfinished feature that enables capturing sound from the mic."
+    },
+    {
+        .display = "Act on Press",
+        .macro = "MUSIALIZER_ACT_ON_PRESS",
+        .description = "Activate UI buttons on Press instead of Release just as John Carmack explained https://twitter.com/ID_AA_Carmack/status/1787850053912064005"
+    },
+};
+
+void generate_default_config(Nob_String_Builder *content)
+{
+    nob_sb_append_cstr(content, "//// Build target. Pick only one!\n");
+    for (size_t i = 0; i < NOB_ARRAY_LEN(target_flags); ++i) {
+        if (target_flags[i].enabled_by_default) {
+            nob_sb_append_cstr(content, "#define ");
+        } else {
+            nob_sb_append_cstr(content, "// #define ");
+        }
+        nob_sb_append_cstr(content, target_flags[i].macro);
+        nob_sb_append_cstr(content, "\n");
+    }
+
+    nob_sb_append_cstr(content, "\n");
+
+    for (size_t i = 0; i < NOB_ARRAY_LEN(feature_flags); ++i) {
+        nob_sb_append_cstr(content, "//// ");
+        nob_sb_append_cstr(content, feature_flags[i].description);
+        nob_sb_append_cstr(content, "\n");
+        if (strcmp(feature_flags[i].macro, "MUSIALIZER_HOTRELOAD") == 0) {
+            // TODO: FIX ASAP! This requires bootstrapping nob with additional flags which goes against its philosophy!
+            #ifdef MUSIALIZER_HOTRELOAD
+                nob_sb_append_cstr(content, "#define ");
+            #else
+                nob_sb_append_cstr(content, "// #define ");
+            #endif
+        } else {
+            nob_sb_append_cstr(content, "// #define ");
+        }
+        nob_sb_append_cstr(content, feature_flags[i].macro);
+        nob_sb_append_cstr(content, "\n");
+        nob_sb_append_cstr(content, "\n");
+    }
+}
+
+void generate_config_logger(Nob_String_Builder *content)
+{
+    nob_sb_append_cstr(content, nob_temp_sprintf("// DO NOT MODIFY THIS FILE. It's auto-generated by %s and it's needed for logging the current configuration.\n", __FILE__));
+    nob_sb_append_cstr(content, "void log_config(Nob_Log_Level level)\n");
+    nob_sb_append_cstr(content, "{\n");
+    nob_sb_append_cstr(content, "    nob_log(level, \"Target: %s\", MUSIALIZER_TARGET_NAME);\n");
+    for (size_t i = 0; i < NOB_ARRAY_LEN(feature_flags); ++i) {
+        nob_sb_append_cstr(content, nob_temp_sprintf("    #ifdef %s\n", feature_flags[i].macro));
+        nob_sb_append_cstr(content, nob_temp_sprintf("        nob_log(level, \"%s: ENABLED\");\n", feature_flags[i].display));
+        nob_sb_append_cstr(content, "    #else\n");
+        nob_sb_append_cstr(content, nob_temp_sprintf("        nob_log(level, \"%s: DISABLED\");\n", feature_flags[i].display));
+        nob_sb_append_cstr(content, "    #endif\n");
+    }
+    nob_sb_append_cstr(content, "}\n");
+}

src_build/nob_configured.c

@@ -3,9 +3,7 @@
 #define NOB_IMPLEMENTATION
 #include "../nob.h"
 #include "../build/config.h"
-
-#define RAYLIB_VERSION "5.0"
-#define CONFIG_PATH "./build/config.h"
+#include "./configurer.c"
 
 static const char *raylib_modules[] = {
     "rcore",
@@ -37,6 +35,8 @@ static const char *raylib_modules[] = {
 #error "No Musializer Target is defined. Check your ./build/config.h."
 #endif // MUSIALIZER_TARGET
 
+#include "../build/config_logger.c"
+
 void log_available_subcommands(const char *program, Nob_Log_Level level)
 {
     nob_log(level, "Usage: %s [subcommand]", program);
@@ -47,31 +47,6 @@ void log_available_subcommands(const char *program, Nob_Log_Level level)
     nob_log(level, "    help");
 }
 
-void log_config(Nob_Log_Level level)
-{
-    nob_log(level, "Target: %s", MUSIALIZER_TARGET_NAME);
-#ifdef MUSIALIZER_HOTRELOAD
-    nob_log(level, "Hotreload: ENABLED");
-#else
-    nob_log(level, "Hotreload: DISABLED");
-#endif // MUSIALIZER_HOTRELOAD
-#ifdef MUSIALIZER_MICROPHONE
-    nob_log(level, "Microphone: ENABLED");
-#else
-    nob_log(level, "Microphone: DISABLED");
-#endif // MUSIALIZER_MICROPHONE
-#ifdef MUSIALIZER_UNBUNDLE
-    nob_log(level, "Unbundle: ENABLED");
-#else
-    nob_log(level, "Unbundle: DISABLED");
-#endif // MUSIALIZER_UNBUNDLE
-#ifdef MUSIALIZER_ACT_ON_PRESS
-    nob_log(level, "Act on Press: ENABLED");
-#else
-    nob_log(level, "Act on Press: DISABLED");
-#endif // MUSIALIZER_ACT_ON_PRESS
-}
-
 #define genf(out, ...) \
     do { \
         fprintf((out), __VA_ARGS__); \