vendor/pixman and basic building

.gitmodules

@@ -31,3 +31,6 @@
 [submodule "vendor/cimgui"]
 	path = vendor/cimgui
 	url = https://github.com/cimgui/cimgui.git
+[submodule "vendor/pixman"]
+	path = vendor/pixman
+	url = https://github.com/freedesktop/pixman.git

pkg/pixman/build.zig

@@ -0,0 +1,137 @@
+const std = @import("std");
+const builtin = @import("builtin");
+
+/// Directories with our includes.
+const root = thisDir() ++ "../../../vendor/pixman/";
+const include_path = root ++ "pixman/";
+const include_path_self = thisDir();
+
+pub const include_paths = .{ include_path, include_path_self };
+
+pub const pkg = std.build.Pkg{
+    .name = "pixman",
+    .source = .{ .path = thisDir() ++ "/main.zig" },
+};
+
+fn thisDir() []const u8 {
+    return std.fs.path.dirname(@src().file) orelse ".";
+}
+
+pub const Options = struct {};
+
+pub fn build(b: *std.build.Builder) !void {
+    const target = b.standardTargetOptions(.{});
+    const mode = b.standardReleaseOptions();
+    _ = target;
+    _ = mode;
+
+    const tests = b.addTestExe("pixman-test", "main.zig");
+    _ = try link(b, tests, .{});
+    tests.install();
+
+    const test_step = b.step("test", "Run tests");
+    const tests_run = tests.run();
+    test_step.dependOn(&tests_run.step);
+}
+
+pub fn link(
+    b: *std.build.Builder,
+    step: *std.build.LibExeObjStep,
+    opt: Options,
+) !*std.build.LibExeObjStep {
+    const lib = try buildPixman(b, step, opt);
+    step.linkLibrary(lib);
+    step.addIncludePath(include_path);
+    step.addIncludePath(include_path_self);
+    return lib;
+}
+
+pub fn buildPixman(
+    b: *std.build.Builder,
+    step: *std.build.LibExeObjStep,
+    opt: Options,
+) !*std.build.LibExeObjStep {
+    _ = opt;
+
+    const target = step.target;
+    const lib = b.addStaticLibrary("pixman", null);
+    lib.setTarget(step.target);
+    lib.setBuildMode(step.build_mode);
+
+    // Include
+    lib.addIncludePath(include_path);
+    lib.addIncludePath(include_path_self);
+
+    // Link
+    lib.linkLibC();
+    if (!target.isWindows()) {
+        lib.linkSystemLibrary("pthread");
+    }
+
+    // Compile
+    var flags = std.ArrayList([]const u8).init(b.allocator);
+    defer flags.deinit();
+
+    try flags.appendSlice(&.{
+        "-DHAVE_SIGACTION=1",
+        "-DHAVE_ALARM=1",
+        "-DHAVE_MPROTECT=1",
+        "-DHAVE_GETPAGESIZE=1",
+        "-DHAVE_MMAP=1",
+        "-DHAVE_GETISAX=1",
+        "-DHAVE_GETTIMEOFDAY=1",
+
+        "-DHAVE_FENV_H=1",
+        "-DHAVE_SYS_MMAN_H=1",
+        "-DHAVE_UNISTD_H=1",
+
+        "-DSIZEOF_LONG=8",
+        "-DPACKAGE=foo",
+    });
+
+    if (!target.isWindows()) {
+        try flags.appendSlice(&.{
+            "-DHAVE_PTHREADS=1",
+
+            "-DHAVE_POSIX_MEMALIGN=1",
+        });
+    }
+
+    // C files
+    lib.addCSourceFiles(srcs, flags.items);
+
+    return lib;
+}
+
+const srcs = &.{
+    root ++ "pixman/pixman.c",
+    root ++ "pixman/pixman-access.c",
+    root ++ "pixman/pixman-access-accessors.c",
+    root ++ "pixman/pixman-bits-image.c",
+    root ++ "pixman/pixman-combine32.c",
+    root ++ "pixman/pixman-combine-float.c",
+    root ++ "pixman/pixman-conical-gradient.c",
+    root ++ "pixman/pixman-filter.c",
+    root ++ "pixman/pixman-x86.c",
+    root ++ "pixman/pixman-mips.c",
+    root ++ "pixman/pixman-arm.c",
+    root ++ "pixman/pixman-ppc.c",
+    root ++ "pixman/pixman-edge.c",
+    root ++ "pixman/pixman-edge-accessors.c",
+    root ++ "pixman/pixman-fast-path.c",
+    root ++ "pixman/pixman-glyph.c",
+    root ++ "pixman/pixman-general.c",
+    root ++ "pixman/pixman-gradient-walker.c",
+    root ++ "pixman/pixman-image.c",
+    root ++ "pixman/pixman-implementation.c",
+    root ++ "pixman/pixman-linear-gradient.c",
+    root ++ "pixman/pixman-matrix.c",
+    root ++ "pixman/pixman-noop.c",
+    root ++ "pixman/pixman-radial-gradient.c",
+    root ++ "pixman/pixman-region16.c",
+    root ++ "pixman/pixman-region32.c",
+    root ++ "pixman/pixman-solid-fill.c",
+    root ++ "pixman/pixman-timer.c",
+    root ++ "pixman/pixman-trap.c",
+    root ++ "pixman/pixman-utils.c",
+};

pkg/pixman/main.zig

@@ -0,0 +1,5 @@
+const std = @import("std");
+
+test {
+    std.testing.refAllDecls(@This());
+}

pkg/pixman/pixman-version.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Author: Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef PIXMAN_VERSION_H__
+#define PIXMAN_VERSION_H__
+
+#ifndef PIXMAN_H__
+#  error pixman-version.h should only be included by pixman.h
+#endif
+
+#define PIXMAN_VERSION_MAJOR 999
+#define PIXMAN_VERSION_MINOR 999
+#define PIXMAN_VERSION_MICRO 999
+
+#define PIXMAN_VERSION_STRING "999.999.999"
+
+#define PIXMAN_VERSION_ENCODE(major, minor, micro) (	\
+	  ((major) * 10000)				\
+	+ ((minor) *   100)				\
+	+ ((micro) *     1))
+
+#define PIXMAN_VERSION PIXMAN_VERSION_ENCODE(	\
+	PIXMAN_VERSION_MAJOR,			\
+	PIXMAN_VERSION_MINOR,			\
+	PIXMAN_VERSION_MICRO)
+
+#ifndef PIXMAN_API
+# define PIXMAN_API
+#endif
+
+#endif /* PIXMAN_VERSION_H__ */

vendor/pixman

@@ -0,0 +1 @@
+Subproject commit 713077d0a3c310ca1955bc331d46d55d0ae4a72b