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emcc: Look for emcc binary in PATH if no sysroot was specified

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Not-Nik 2024-09-28 14:51:15 +02:00
parent f26b2ab084
commit d7d9e41863
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1 changed files with 18 additions and 14 deletions
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32
emcc.zig
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@ -6,10 +6,6 @@ const builtin = @import("builtin");
const emccOutputDir = "zig-out" ++ std.fs.path.sep_str ++ "htmlout" ++ std.fs.path.sep_str;
const emccOutputFile = "index.html";
pub fn emscriptenRunStep(b: *std.Build) !*std.Build.Step.Run {
// Find emrun.
if (b.sysroot == null) {
@panic("Pass '--sysroot \"[path to emsdk installation]/upstream/emscripten\"'");
}
// If compiling on windows , use emrun.bat.
const emrunExe = switch (builtin.os.tag) {
.windows => "emrun.bat",
@ -18,7 +14,15 @@ pub fn emscriptenRunStep(b: *std.Build) !*std.Build.Step.Run {
const emrun_run_arg = try b.allocator.alloc(u8, b.sysroot.?.len + emrunExe.len + 1);
defer b.allocator.free(emrun_run_arg);
_ = try std.fmt.bufPrint(emrun_run_arg, "{s}" ++ std.fs.path.sep_str ++ "{s}", .{ b.sysroot.?, emrunExe });
if (b.sysroot == null) {
emrun_run_arg = emrunExe;
} else {
emrun_run_arg = try std.fmt.bufPrint(
emrun_run_arg,
"{s}" ++ std.fs.path.sep_str ++ "{s}",
.{ b.sysroot.?, emrunExe }
);
}
const run_cmd = b.addSystemCommand(&[_][]const u8{ emrun_run_arg, emccOutputDir ++ emccOutputFile });
return run_cmd;
@ -73,10 +77,6 @@ pub fn linkWithEmscripten(
b: *std.Build,
itemsToLink: []const *std.Build.Step.Compile,
) !*std.Build.Step.Run {
// Raylib uses --sysroot in order to find emscripten, so do the same here.
if (b.sysroot == null) {
@panic("Pass '--sysroot \"[path to emsdk installation]/upstream/emscripten\"'");
}
const emccExe = switch (builtin.os.tag) {
.windows => "emcc.bat",
else => "emcc",
@ -84,11 +84,15 @@ pub fn linkWithEmscripten(
var emcc_run_arg = try b.allocator.alloc(u8, b.sysroot.?.len + emccExe.len + 1);
defer b.allocator.free(emcc_run_arg);
emcc_run_arg = try std.fmt.bufPrint(
emcc_run_arg,
"{s}" ++ std.fs.path.sep_str ++ "{s}",
.{ b.sysroot.?, emccExe },
);
if (b.sysroot == null) {
emcc_run_arg = emccExe;
} else {
emcc_run_arg = try std.fmt.bufPrint(
emcc_run_arg,
"{s}" ++ std.fs.path.sep_str ++ "{s}",
.{ b.sysroot.?, emccExe },
);
}
// Create the output directory because emcc can't do it.
const mkdir_command = b.addSystemCommand(&[_][]const u8{ "mkdir", "-p", emccOutputDir });