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synced 2025-07-14 15:56:13 +03:00
101 lines
2.3 KiB
Zig
101 lines
2.3 KiB
Zig
const std = @import("std");
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/// Directories with our includes.
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const root = thisDir() ++ "../../../vendor/libpng/";
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const include_path = root;
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const include_path_pnglibconf = thisDir();
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pub const include_paths = .{ include_path, include_path_pnglibconf };
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pub const pkg = std.build.Pkg{
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.name = "libpng",
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.source = .{ .path = thisDir() ++ "/main.zig" },
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};
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fn thisDir() []const u8 {
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return std.fs.path.dirname(@src().file) orelse ".";
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}
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pub const Options = struct {
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zlib: Zlib = .{},
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pub const Zlib = struct {
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step: ?*std.build.LibExeObjStep = null,
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include: ?[]const []const u8 = null,
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};
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};
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pub fn link(
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b: *std.build.Builder,
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step: *std.build.LibExeObjStep,
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opt: Options,
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) !*std.build.LibExeObjStep {
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const lib = try buildLib(b, step, opt);
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step.linkLibrary(lib);
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step.addIncludePath(include_path);
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return lib;
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}
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pub fn buildLib(
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b: *std.build.Builder,
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step: *std.build.LibExeObjStep,
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opt: Options,
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) !*std.build.LibExeObjStep {
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const target = step.target;
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const lib = b.addStaticLibrary("libpng", null);
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lib.setTarget(step.target);
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lib.setBuildMode(step.build_mode);
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// Include
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lib.addIncludePath(include_path);
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lib.addIncludePath(include_path_pnglibconf);
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// Link
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lib.linkLibC();
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if (target.isLinux()) {
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lib.linkSystemLibrary("m");
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}
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if (opt.zlib.step) |zlib|
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lib.linkLibrary(zlib)
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else
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lib.linkSystemLibrary("z");
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if (opt.zlib.include) |dirs|
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for (dirs) |dir| lib.addIncludePath(dir);
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// Compile
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var flags = std.ArrayList([]const u8).init(b.allocator);
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defer flags.deinit();
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try flags.appendSlice(&.{
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"-DPNG_ARM_NEON_OPT=0",
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"-DPNG_POWERPC_VSX_OPT=0",
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"-DPNG_INTEL_SSE_OPT=0",
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"-DPNG_MIPS_MSA_OPT=0",
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});
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// C files
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lib.addCSourceFiles(srcs, flags.items);
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return lib;
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}
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const srcs = &.{
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root ++ "png.c",
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root ++ "pngerror.c",
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root ++ "pngget.c",
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root ++ "pngmem.c",
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root ++ "pngpread.c",
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root ++ "pngread.c",
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root ++ "pngrio.c",
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root ++ "pngrtran.c",
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root ++ "pngrutil.c",
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root ++ "pngset.c",
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root ++ "pngtrans.c",
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root ++ "pngwio.c",
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root ++ "pngwrite.c",
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root ++ "pngwtran.c",
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root ++ "pngwutil.c",
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};
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