205 lines
8.5 KiB
C
205 lines
8.5 KiB
C
#if !defined(DQN_CPP_BUILD_H)
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#define DQN_CPP_BUILD_H
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////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// $$$$$$\ $$$$$$$\ $$$$$$$\ $$$$$$$\ $$\ $$\ $$$$$$\ $$\ $$$$$$$\
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// $$ __$$\ $$ __$$\ $$ __$$\ $$ __$$\ $$ | $$ |\_$$ _|$$ | $$ __$$\
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// $$ / \__|$$ | $$ |$$ | $$ | $$ | $$ |$$ | $$ | $$ | $$ | $$ | $$ |
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// $$ | $$$$$$$ |$$$$$$$ | $$$$$$$\ |$$ | $$ | $$ | $$ | $$ | $$ |
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// $$ | $$ ____/ $$ ____/ $$ __$$\ $$ | $$ | $$ | $$ | $$ | $$ |
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// $$ | $$\ $$ | $$ | $$ | $$ |$$ | $$ | $$ | $$ | $$ | $$ |
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// \$$$$$$ |$$ | $$ | $$$$$$$ |\$$$$$$ |$$$$$$\ $$$$$$$$\ $$$$$$$ |
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// \______/ \__| \__| \_______/ \______/ \______|\________|\_______/
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//
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// dqn_cppbuild.h -- Helper functions to make build scripts in C++
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//
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#if !defined(DQN_H)
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#error 'dqn.h' must be included before 'dqn_cppbuild.h'
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#endif
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struct Dqn_CPPBuildCompileFile
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{
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Dqn_Slice<Dqn_Str8> prefix_flags;
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Dqn_Slice<Dqn_Str8> suffix_flags;
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Dqn_Str8 input_file_path;
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Dqn_Str8 output_file_path;
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};
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Dqn_Str8 const DQN_CPP_BUILD_OBJ_SUFFIX_OBJ = DQN_STR8(".obj");
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Dqn_Str8 const DQN_CPP_BUILD_OBJ_SUFFIX_O = DQN_STR8(".o");
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enum Dqn_CPPBuildFlagsStyle
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{
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Dqn_CPPBuildFlagsStyle_MSVC,
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Dqn_CPPBuildFlagsStyle_GCC,
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Dqn_CPPBuildFlagsStyle_CLANG,
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};
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enum Dqn_CPPBuildAppendCompilerToCommand
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{
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Dqn_CPPBuildAppendCompilerToCommand_No,
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Dqn_CPPBuildAppendCompilerToCommand_Yes,
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};
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struct Dqn_CPPBuildContext
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{
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// Dictates the type of compiler flags the functions may append to the
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// build command line
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Dqn_CPPBuildFlagsStyle flags_style;
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Dqn_Str8 compile_file_obj_suffix;
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Dqn_Slice<Dqn_CPPBuildCompileFile> compile_files;
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Dqn_Slice<Dqn_Str8> compile_flags;
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Dqn_Slice<Dqn_Str8> include_dirs;
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Dqn_Slice<Dqn_Str8> link_flags;
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Dqn_Str8 build_dir;
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};
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enum Dqn_CPPBuildStatus
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{
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Dqn_CPPBuildStatus_Ok,
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Dqn_CPPBuildStatus_BuildDirectoryFailedToBeMade,
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};
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struct Dqn_CPPBuildAsyncResult
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{
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Dqn_CPPBuildStatus status;
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Dqn_OSExecAsyncHandle async_handle;
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};
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enum Dqn_CPPBuildMode
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{
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Dqn_CPPBuildMode_AlwaysRebuild,
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Dqn_CPPBuildMode_CacheBuild,
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};
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DQN_API Dqn_Slice<Dqn_Str8> Dqn_CPPBuild_ToCommandLine (Dqn_CPPBuildContext build_context, Dqn_CPPBuildMode mode, Dqn_Arena *arena);
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DQN_API Dqn_Str8 Dqn_CPPBuild_ToCommandLineStr8(Dqn_CPPBuildContext build_context, Dqn_CPPBuildMode mode, Dqn_Arena *arena);
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DQN_API Dqn_CPPBuildAsyncResult Dqn_CPPBuild_Async (Dqn_CPPBuildContext build_context, Dqn_CPPBuildMode mode);
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DQN_API void Dqn_CPPBuild_ExecOrAbort (Dqn_CPPBuildContext build_context, Dqn_CPPBuildMode mode);
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#endif // DQN_CPP_BUILD_H
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#if defined(DQN_CPP_BUILD_IMPLEMENTATION)
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DQN_API Dqn_Slice<Dqn_Str8> Dqn_CPPBuild_ToCommandLine(Dqn_CPPBuildContext build_context, Dqn_CPPBuildMode mode, Dqn_Arena *arena)
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{
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// NOTE: Check if object files are newer than the source files /////////////////////////////////
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Dqn_Scratch scratch = Dqn_Scratch_Get(arena);
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Dqn_Slice<Dqn_Str8> result = {};
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Dqn_Slice<Dqn_CPPBuildCompileFile> dirtied_compile_files = build_context.compile_files;
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if (mode == Dqn_CPPBuildMode_CacheBuild) {
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dirtied_compile_files = Dqn_Slice_Alloc<Dqn_CPPBuildCompileFile>(scratch.arena, build_context.compile_files.size, Dqn_ZeroMem_Yes);
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dirtied_compile_files.size = 0;
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DQN_FOR_UINDEX (index, build_context.compile_files.size) {
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Dqn_CPPBuildCompileFile file = build_context.compile_files.data[index];
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Dqn_Str8 obj_file_name = {};
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if (file.output_file_path.size) {
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obj_file_name = file.output_file_path;
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} else {
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// NOTE: Determine the object file suffix
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Dqn_Str8 compile_file_obj_suffix = build_context.compile_file_obj_suffix;
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if (compile_file_obj_suffix.size == 0)
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compile_file_obj_suffix = DQN_CPP_BUILD_OBJ_SUFFIX_OBJ;
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// NOTE: Create the object file path
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Dqn_Str8 file_stem = Dqn_Str8_FileNameNoExtension(file.input_file_path);
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obj_file_name = Dqn_Str8_InitF(scratch.arena, "%.*s%.*s", DQN_STR_FMT(file_stem), DQN_STR_FMT(compile_file_obj_suffix));
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}
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Dqn_Str8 obj_file_path = obj_file_name;
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if (build_context.build_dir.size)
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obj_file_path = Dqn_OS_PathConvertF(scratch.arena, "%.*s/%.*s", DQN_STR_FMT(build_context.build_dir), DQN_STR_FMT(obj_file_name));
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Dqn_OSPathInfo file_info = Dqn_OS_PathInfo(file.input_file_path);
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Dqn_OSPathInfo obj_file_info = Dqn_OS_PathInfo(obj_file_path);
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if (obj_file_info.last_write_time_in_s >= file_info.last_write_time_in_s)
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continue;
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dirtied_compile_files.data[dirtied_compile_files.size++] = file;
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}
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if (dirtied_compile_files.size <= 0)
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return result;
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}
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// NOTE: Build the command line invocation /////////////////////////////////////////////////////
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Dqn_Str8Builder builder = {};
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builder.arena = scratch.arena;
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Dqn_Str8Builder_AppendRefArray(&builder, build_context.compile_flags);
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DQN_FOR_UINDEX(index, build_context.include_dirs.size) {
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Dqn_Str8 include_dir = build_context.include_dirs.data[index];
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Dqn_Str8Builder_AppendRef(&builder, DQN_STR8("-I"));
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Dqn_Str8Builder_AppendRef(&builder, include_dir);
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}
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DQN_FOR_UINDEX(index, dirtied_compile_files.size) {
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Dqn_CPPBuildCompileFile file = dirtied_compile_files.data[index];
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if (Dqn_Str8_HasData(file.output_file_path)) {
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switch (build_context.flags_style) {
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case Dqn_CPPBuildFlagsStyle_MSVC: {
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Dqn_Str8Builder_AppendF(&builder, "-Fo%.*s", DQN_STR_FMT(file.output_file_path));
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} break;
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case Dqn_CPPBuildFlagsStyle_GCC: /*FALLTHRU*/
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case Dqn_CPPBuildFlagsStyle_CLANG: {
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Dqn_Str8Builder_AppendF (&builder, "-o");
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Dqn_Str8Builder_AppendRef(&builder, file.output_file_path);
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} break;
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}
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}
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// TODO(doyle): Check if the file exists, error if it doesn't
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Dqn_Str8Builder_AppendRefArray(&builder, file.prefix_flags);
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Dqn_Str8Builder_AppendRef(&builder, file.input_file_path);
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Dqn_Str8Builder_AppendRefArray(&builder, file.suffix_flags);
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}
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Dqn_Str8Builder_AppendRefArray(&builder, build_context.link_flags);
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result = Dqn_Str8Builder_BuildSlice(&builder, arena);
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return result;
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}
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DQN_API Dqn_Str8 Dqn_CPPBuild_ToCommandLineStr8(Dqn_CPPBuildContext build_context, Dqn_CPPBuildMode mode, Dqn_Arena *arena)
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{
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Dqn_Slice<Dqn_Str8> cmd_line = Dqn_CPPBuild_ToCommandLine(build_context, mode, arena);
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Dqn_Str8 result = Dqn_Slice_Str8Render(arena, cmd_line, DQN_STR8(" ") /*separator*/);
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return result;
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}
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DQN_API Dqn_CPPBuildAsyncResult Dqn_CPPBuild_Async(Dqn_CPPBuildContext build_context, Dqn_CPPBuildMode mode, Dqn_ErrorSink *error)
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{
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Dqn_Scratch scratch = Dqn_Scratch_Get(nullptr);
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Dqn_Slice<Dqn_Str8> cmd_line = Dqn_CPPBuild_ToCommandLine(build_context, mode, scratch.arena);
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Dqn_CPPBuildAsyncResult result = {};
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if (!cmd_line.size)
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return result;
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if (!Dqn_OS_MakeDir(build_context.build_dir)) {
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result.status = Dqn_CPPBuildStatus_BuildDirectoryFailedToBeMade;
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Dqn_ErrorSink_MakeF(error, result.status, "Failed to make build directory '%.*s'", DQN_STR_FMT(build_context.build_dir));
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return result;
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}
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result.async_handle = Dqn_OS_ExecAsync(cmd_line, build_context.build_dir, Dqn_OSExecFlag_Nil, error);
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return result;
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}
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void Dqn_CPPBuild_ExecOrAbort(Dqn_CPPBuildContext build_context, Dqn_CPPBuildMode mode)
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{
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if (!Dqn_OS_MakeDir(build_context.build_dir)) {
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Dqn_Log_ErrorF("Failed to make build dir '%.*s'", DQN_STR_FMT(build_context.build_dir));
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exit(-1);
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}
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Dqn_Scratch scratch = Dqn_Scratch_Get(nullptr);
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Dqn_Slice<Dqn_Str8> cmd_line = Dqn_CPPBuild_ToCommandLine(build_context, mode, scratch.arena);
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Dqn_OS_ExecOrAbort(cmd_line, build_context.build_dir, Dqn_OSExecFlag_Nil, scratch.arena);
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}
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#endif // DQN_CPP_BUILD_IMPLEMENTATION
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