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zig build: when compiling C files put .o files in cache dir

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See #328
This commit is contained in:
Andrew Kelley 2017-04-30 13:01:35 -04:00
parent 43e7ac8418
commit 38a04a267c
3 changed files with 29 additions and 12 deletions
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32
std/build.zig
View File

@ -284,7 +284,7 @@ pub const Builder = struct {
return &top_level_step.step;
}
}
%%io.stderr.printf("Cannot run step '{}' because it does not exist.", name);
%%io.stderr.printf("Cannot run step '{}' because it does not exist\n", name);
return error.InvalidStepName;
}
@ -529,6 +529,13 @@ pub const Builder = struct {
}
pub fn makePath(self: &Builder, path: []const u8) -> %void {
os.makePath(self.allocator, path) %% |err| {
%%io.stderr.printf("Unable to create path {}: {}\n", path, @errorName(err));
return err;
};
}
pub fn installCLibrary(self: &Builder, lib: &CLibrary) -> &InstallCLibraryStep {
const install_step = %%self.allocator.create(InstallCLibraryStep);
*install_step = InstallCLibraryStep.init(self, lib);
@ -1090,11 +1097,13 @@ pub const CLibrary = struct {
%%cc_args.append("-c");
%%cc_args.append(source_file);
// TODO don't dump the .o file in the same place as the source file
const o_file = builder.fmt("{}{}", source_file, self.target.oFileExt());
defer builder.allocator.free(o_file);
const rel_src_path = %%os.path.relative(builder.allocator, builder.build_root, source_file);
const cache_o_src = %%os.path.join(builder.allocator, builder.cache_root, rel_src_path);
const cache_o_dir = os.path.dirname(cache_o_src);
%return builder.makePath(cache_o_dir);
const cache_o_file = builder.fmt("{}{}", cache_o_src, self.target.oFileExt());
%%cc_args.append("-o");
%%cc_args.append(o_file);
%%cc_args.append(cache_o_file);
for (self.cflags.toSliceConst()) |cflag| {
%%cc_args.append(cflag);
@ -1107,7 +1116,7 @@ pub const CLibrary = struct {
%return builder.spawnChild(cc, cc_args.toSliceConst());
%%self.object_files.append(o_file);
%%self.object_files.append(cache_o_file);
}
if (self.static) {
@ -1248,10 +1257,13 @@ pub const CExecutable = struct {
%%cc_args.append(builder.pathFromRoot(source_file));
// TODO don't dump the .o file in the same place as the source file
const o_file = builder.fmt("{}{}", source_file, self.target.oFileExt());
defer builder.allocator.free(o_file);
const rel_src_path = %%os.path.relative(builder.allocator, builder.build_root, source_file);
const cache_o_src = %%os.path.join(builder.allocator, builder.cache_root, rel_src_path);
const cache_o_dir = os.path.dirname(cache_o_src);
%return builder.makePath(cache_o_dir);
const cache_o_file = builder.fmt("{}{}", cache_o_src, self.target.oFileExt());
%%cc_args.append("-o");
%%cc_args.append(o_file);
%%cc_args.append(cache_o_file);
for (self.cflags.toSliceConst()) |cflag| {
%%cc_args.append(cflag);
@ -1264,7 +1276,7 @@ pub const CExecutable = struct {
%return builder.spawnChild(cc, cc_args.toSliceConst());
%%self.object_files.append(o_file);
%%self.object_files.append(cache_o_file);
}
%%cc_args.resize(0);

2
std/os/path.zig
View File

@ -17,7 +17,7 @@ pub const delimiter = switch (@compileVar("os")) {
/// Naively combines a series of paths with the native path seperator.
/// Allocates memory for the result, which must be freed by the caller.
pub fn join(allocator: &Allocator, paths: ...) -> %[]u8 {
assert(paths.len >= 2);
comptime assert(paths.len >= 2);
var total_paths_len: usize = paths.len; // 1 slash per path
{
comptime var path_i = 0;

7
std/special/build_runner.zig
View File

@ -95,7 +95,12 @@ pub fn main() -> %void {
if (builder.validateUserInputDidItFail())
return usage(&builder, true, &io.stderr);
%return builder.make(targets.toSliceConst());
builder.make(targets.toSliceConst()) %% |err| {
if (err == error.InvalidStepName) {
return usage(&builder, true, &io.stderr);
}
return err;
};
}
fn usage(builder: &Builder, already_ran_build: bool, out_stream: &io.OutStream) -> %void {