Add 'zimgui/' from commit 'a053e62c779b1ba303e21330b266a1b32d26b27a'

git-subtree-dir: zimgui git-subtree-mainline: b0d2e231b0 git-subtree-split: a053e62c77
2025-08-04 22:14:47 -04:00
parent b0d2e231b0 a053e62c77
commit 2ddc780981
8 changed files with 212 additions and 0 deletions
--- a/zimgui/build.zig
+++ b/zimgui/build.zig
@@ -0,0 +1,88 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) !void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const imgui_dep = b.dependency("imgui", .{});
+    const cimgui_dep = b.dependency("cimgui", .{});
+
+    const luajit = try b.findProgram(&.{"luajit"}, &.{});
+
+    const gen = b.addSystemCommand(&.{luajit});
+    gen.setCwd(cimgui_dep.path("generator/"));
+    gen.addFileArg(cimgui_dep.path("generator/generator.lua"));
+    gen.addArgs(&.{
+        "zig cc",
+        "comments internal noimstrv",
+        "glfw",
+        "vulkan",
+    });
+    _ = gen.captureStdOut(); // to quiet output
+
+    {
+        const relpath = try std.fs.path.relative(
+            b.allocator,
+            cimgui_dep.path("generator").getPath(b),
+            imgui_dep.path("").getPath(b),
+        );
+        defer b.allocator.free(relpath);
+        gen.setEnvironmentVariable(
+            "IMGUI_PATH",
+            relpath,
+        );
+    }
+
+    const copy = b.addWriteFiles();
+    copy.step.dependOn(&gen.step);
+    _ = copy.addCopyDirectory(imgui_dep.path(""), "imgui", .{
+        .include_extensions = &.{ ".h", ".cpp" },
+    });
+    _ = copy.addCopyFile(cimgui_dep.path("cimgui.h"), "cimgui.h");
+    _ = copy.addCopyFile(cimgui_dep.path("cimgui.cpp"), "cimgui.cpp");
+    _ = copy.addCopyFile(cimgui_dep.path("generator/output/cimgui_impl.h"), "cimgui_impl.h");
+
+    const cimgui = b.addSharedLibrary(.{
+        .name = "cimgui",
+        .target = target,
+        .optimize = optimize,
+    });
+    cimgui.step.dependOn(&copy.step);
+    cimgui.linkLibC();
+    cimgui.linkLibCpp();
+    cimgui.addIncludePath(copy.getDirectory());
+    cimgui.addIncludePath(copy.getDirectory().path(b, "imgui"));
+    cimgui.addCSourceFiles(.{
+        .root = copy.getDirectory(),
+        .files = &.{
+            "cimgui.cpp",
+            "imgui/imgui.cpp",
+            "imgui/imgui_tables.cpp",
+            "imgui/imgui_widgets.cpp",
+            "imgui/imgui_demo.cpp",
+            "imgui/imgui_draw.cpp",
+            "imgui/backends/imgui_impl_glfw.cpp",
+            "imgui/backends/imgui_impl_vulkan.cpp",
+        },
+        .flags = &.{
+            "-DIMGUI_IMPL_VULKAN_NO_PROTOTYPES",
+        },
+    });
+    cimgui.installHeader(copy.getDirectory().path(b, "cimgui.h"), "cimgui.h");
+    cimgui.installHeader(copy.getDirectory().path(b, "cimgui_impl.h"), "cimgui_impl.h");
+
+    cimgui.linkSystemLibrary2("glfw3", .{
+        .needed = true,
+        .preferred_link_mode = .static,
+        .use_pkg_config = .force,
+    });
+
+    b.installArtifact(cimgui);
+
+    const zimgui_mod = b.addModule("zimgui", .{
+        .target = target,
+        .optimize = optimize,
+        .root_source_file = b.path("src/root.zig"),
+    });
+    zimgui_mod.linkLibrary(cimgui);
+}