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deps: Allow dynamic-linking of spirv-cross

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- Use the pkg-config name of 'spirv-cross-c-shared' exported by the upstream SPIRV-Cross build
This commit is contained in:
azhn
2025-09-23 20:33:51 +10:00
parent 3eb646ea6b
commit a9c5a05e5b
2 changed files with 50 additions and 35 deletions
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83
pkg/spirv-cross/build.zig
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@@ -4,16 +4,19 @@ pub fn build(b: *std.Build) !void {
const target = b.standardTargetOptions(.{}); const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{}); const optimize = b.standardOptimizeOption(.{});
const upstream = b.lazyDependency("spirv_cross", .{}); const module = b.addModule("spirv_cross", .{ .root_source_file = b.path("main.zig"), .target = target, .optimize = optimize });
const module = b.addModule("spirv_cross", .{ .root_source_file = b.path("main.zig") }); // For dynamic linking, we prefer dynamic linking and to search by
if (upstream) |v| module.addIncludePath(v.path("")); // mode first. Mode first will search all paths for a dynamic library
// before falling back to static.
const lib = try buildSpirvCross(b, upstream, target, optimize); const dynamic_link_opts: std.Build.Module.LinkSystemLibraryOptions = .{
b.installArtifact(lib); .preferred_link_mode = .dynamic,
.search_strategy = .mode_first,
};
var test_exe: ?*std.Build.Step.Compile = null;
if (target.query.isNative()) { if (target.query.isNative()) {
const test_exe = b.addTest(.{ test_exe = b.addTest(.{
.name = "test", .name = "test",
.root_module = b.createModule(.{ .root_module = b.createModule(.{
.root_source_file = b.path("main.zig"), .root_source_file = b.path("main.zig"),
@@ -21,19 +24,28 @@ pub fn build(b: *std.Build) !void {
.optimize = optimize, .optimize = optimize,
}), }),
}); });
test_exe.linkLibrary(lib); const tests_run = b.addRunArtifact(test_exe.?);
const tests_run = b.addRunArtifact(test_exe);
const test_step = b.step("test", "Run tests"); const test_step = b.step("test", "Run tests");
test_step.dependOn(&tests_run.step); test_step.dependOn(&tests_run.step);
// Uncomment this if we're debugging tests // Uncomment this if we're debugging tests
// b.installArtifact(test_exe); // b.installArtifact(test_exe.?);
}
if (b.systemIntegrationOption("spirv-cross", .{})) {
module.linkSystemLibrary("spirv-cross-c-shared", dynamic_link_opts);
if (test_exe) |exe| {
exe.linkSystemLibrary2("spirv-cross-c-shared", dynamic_link_opts);
}
} else {
const lib = try buildSpirvCross(b, module, target, optimize);
b.installArtifact(lib);
if (test_exe) |exe| exe.linkLibrary(lib);
} }
} }
fn buildSpirvCross( fn buildSpirvCross(
b: *std.Build, b: *std.Build,
upstream_: ?*std.Build.Dependency, module: *std.Build.Module,
target: std.Build.ResolvedTarget, target: std.Build.ResolvedTarget,
optimize: std.builtin.OptimizeMode, optimize: std.builtin.OptimizeMode,
) !*std.Build.Step.Compile { ) !*std.Build.Step.Compile {
@@ -62,33 +74,36 @@ fn buildSpirvCross(
"-fno-sanitize-trap=undefined", "-fno-sanitize-trap=undefined",
}); });
const upstream = upstream_ orelse return lib; if (b.lazyDependency("spirv_cross", .{})) |upstream| {
lib.addCSourceFiles(.{ lib.addIncludePath(upstream.path(""));
.root = upstream.path(""), module.addIncludePath(upstream.path(""));
.flags = flags.items, lib.addCSourceFiles(.{
.files = &.{ .root = upstream.path(""),
// Core .flags = flags.items,
"spirv_cross.cpp", .files = &.{
"spirv_parser.cpp", // Core
"spirv_cross_parsed_ir.cpp", "spirv_cross.cpp",
"spirv_cfg.cpp", "spirv_parser.cpp",
"spirv_cross_parsed_ir.cpp",
"spirv_cfg.cpp",
// C // C
"spirv_cross_c.cpp", "spirv_cross_c.cpp",
// GLSL // GLSL
"spirv_glsl.cpp", "spirv_glsl.cpp",
// MSL // MSL
"spirv_msl.cpp", "spirv_msl.cpp",
}, },
}); });
lib.installHeadersDirectory( lib.installHeadersDirectory(
upstream.path(""), upstream.path(""),
"", "",
.{ .include_extensions = &.{".h"} }, .{ .include_extensions = &.{".h"} },
); );
}
return lib; return lib;
} }

2
src/build/SharedDeps.zig
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@@ -260,7 +260,7 @@ pub fn add(
spirv_cross_dep.module("spirv_cross"), spirv_cross_dep.module("spirv_cross"),
); );
if (b.systemIntegrationOption("spirv-cross", .{})) { if (b.systemIntegrationOption("spirv-cross", .{})) {
step.linkSystemLibrary2("spirv-cross", dynamic_link_opts); step.linkSystemLibrary2("spirv-cross-c-shared", dynamic_link_opts);
} else { } else {
step.linkLibrary(spirv_cross_dep.artifact("spirv_cross")); step.linkLibrary(spirv_cross_dep.artifact("spirv_cross"));
try static_libs.append( try static_libs.append(