Revert "[build] Only cache raygui impl (#170)"

This reverts commit 2f773da.

Author: Not-Nik

build.zig

@@ -97,55 +97,52 @@ fn link(
     exe.linkLibrary(lib);
 }
 
-var _raygui_impl_cache: ?*std.Build.Step.WriteFile = null;
-var _raygui_impl_path_cache: ?std.Build.LazyPath = null;
+var _raylib_lib_cache: ?*std.Build.Step.Compile = null;
 fn getRaylib(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.builtin.OptimizeMode, options: Options) *std.Build.Step.Compile {
-    if (_raygui_impl_cache == null) {
-        var gen_step = b.addWriteFiles();
-
-        _raygui_impl_cache = gen_step;
-        _raygui_impl_path_cache = gen_step.add("raygui.c", "#define RAYGUI_IMPLEMENTATION\n#include \"raygui.h\"\n");
-    }
-
-    const raylib = b.dependency("raylib", .{
-        .target = target,
-        .optimize = optimize,
-        .raudio = options.raudio,
-        .rmodels = options.rmodels,
-        .rshapes = options.rshapes,
-        .rtext = options.rtext,
-        .rtextures = options.rtextures,
-        .platform = options.platform,
-        .shared = options.shared,
-        .linux_display_backend = options.linux_display_backend,
-        .opengl_version = options.opengl_version,
-    });
-
-    const lib = raylib.artifact("raylib");
+    if (_raylib_lib_cache) |lib| return lib else {
+        const raylib = b.dependency("raylib", .{
+            .target = target,
+            .optimize = optimize,
+            .raudio = options.raudio,
+            .rmodels = options.rmodels,
+            .rshapes = options.rshapes,
+            .rtext = options.rtext,
+            .rtextures = options.rtextures,
+            .platform = options.platform,
+            .shared = options.shared,
+            .linux_display_backend = options.linux_display_backend,
+            .opengl_version = options.opengl_version,
+        });
 
-    const raygui_dep = b.dependency("raygui", .{
-        .target = target,
-        .optimize = optimize,
-    });
+        const lib = raylib.artifact("raylib");
 
-    lib.step.dependOn(&(_raygui_impl_cache orelse unreachable).step);
+        const raygui_dep = b.dependency("raygui", .{
+            .target = target,
+            .optimize = optimize,
+        });
 
-    lib.addCSourceFile(.{
-        .file = (_raygui_impl_path_cache orelse unreachable),
-        .flags = &[_][]const u8{
-            "-std=gnu99",
-            "-D_GNU_SOURCE",
-            "-DGL_SILENCE_DEPRECATION=199309L",
-            "-fno-sanitize=undefined", // https://github.com/raysan5/raylib/issues/3674
-        },
-    });
-    lib.addIncludePath(raylib.path("src"));
-    lib.addIncludePath(raygui_dep.path("src"));
+        var gen_step = b.addWriteFiles();
+        lib.step.dependOn(&gen_step.step);
+
+        const raygui_c_path = gen_step.add("raygui.c", "#define RAYGUI_IMPLEMENTATION\n#include \"raygui.h\"\n");
+        lib.addCSourceFile(.{
+            .file = raygui_c_path,
+            .flags = &[_][]const u8{
+                "-std=gnu99",
+                "-D_GNU_SOURCE",
+                "-DGL_SILENCE_DEPRECATION=199309L",
+                "-fno-sanitize=undefined", // https://github.com/raysan5/raylib/issues/3674
+            },
+        });
+        lib.addIncludePath(raylib.path("src"));
+        lib.addIncludePath(raygui_dep.path("src"));
 
-    lib.installHeader(raygui_dep.path("src/raygui.h"), "raygui.h");
+        lib.installHeader(raygui_dep.path("src/raygui.h"), "raygui.h");
 
-    b.installArtifact(lib);
-    return lib;
+        b.installArtifact(lib);
+        _raylib_lib_cache = lib;
+        return lib;
+    }
 }
 
 fn getModule(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.builtin.OptimizeMode) *std.Build.Module {