| # Copyright 2016 The Bazel Authors. All rights reserved. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| """Repository rule to generate host xcode_config and xcode_version targets. |
| |
| The xcode_config and xcode_version targets are configured for xcodes/SDKs |
| installed on the local host. |
| """ |
| |
| def _search_string(fullstring, prefix, suffix): |
| """Returns the substring between two given substrings of a larger string. |
| |
| Args: |
| fullstring: The larger string to search. |
| prefix: The substring that should occur directly before the returned string. |
| suffix: The substring that should occur directly after the returned string. |
| Returns: |
| A string occurring in fullstring exactly prefixed by prefix, and exactly |
| terminated by suffix. For example, ("hello goodbye", "lo ", " bye") will |
| return "good". If there is no such string, returns the empty string. |
| """ |
| |
| prefix_index = fullstring.find(prefix) |
| if (prefix_index < 0): |
| return "" |
| result_start_index = prefix_index + len(prefix) |
| suffix_index = fullstring.find(suffix, result_start_index) |
| if (suffix_index < 0): |
| return "" |
| return fullstring[result_start_index:suffix_index] |
| |
| def _search_sdk_output(output, sdkname): |
| """Returns the sdk version given xcodebuild stdout and an sdkname.""" |
| return _search_string(output, "(%s" % sdkname, ")") |
| |
| def _xcode_version_output(repository_ctx, name, version, aliases, developer_dir): |
| """Returns a string containing an xcode_version build target.""" |
| build_contents = "" |
| decorated_aliases = [] |
| error_msg = "" |
| for alias in aliases: |
| decorated_aliases.append("'%s'" % alias) |
| xcodebuild_result = repository_ctx.execute( |
| ["xcrun", "xcodebuild", "-version", "-sdk"], |
| 30, |
| {"DEVELOPER_DIR": developer_dir}, |
| ) |
| if (xcodebuild_result.return_code != 0): |
| error_msg = ( |
| "Invoking xcodebuild failed, developer dir: {devdir} ," + |
| "return code {code}, stderr: {err}, stdout: {out}" |
| ).format( |
| devdir = developer_dir, |
| code = xcodebuild_result.return_code, |
| err = xcodebuild_result.stderr, |
| out = xcodebuild_result.stdout, |
| ) |
| ios_sdk_version = _search_sdk_output(xcodebuild_result.stdout, "iphoneos") |
| tvos_sdk_version = _search_sdk_output(xcodebuild_result.stdout, "appletvos") |
| macos_sdk_version = _search_sdk_output(xcodebuild_result.stdout, "macosx") |
| watchos_sdk_version = _search_sdk_output(xcodebuild_result.stdout, "watchos") |
| build_contents += "xcode_version(\n name = '%s'," % name |
| build_contents += "\n version = '%s'," % version |
| if aliases: |
| build_contents += "\n aliases = [%s]," % " ,".join(decorated_aliases) |
| if ios_sdk_version: |
| build_contents += "\n default_ios_sdk_version = '%s'," % ios_sdk_version |
| if tvos_sdk_version: |
| build_contents += "\n default_tvos_sdk_version = '%s'," % tvos_sdk_version |
| if macos_sdk_version: |
| build_contents += "\n default_macos_sdk_version = '%s'," % macos_sdk_version |
| if watchos_sdk_version: |
| build_contents += "\n default_watchos_sdk_version = '%s'," % watchos_sdk_version |
| build_contents += "\n)\n" |
| if error_msg: |
| build_contents += "\n# Error: " + error_msg.replace("\n", " ") + "\n" |
| print(error_msg) |
| return build_contents |
| |
| VERSION_CONFIG_STUB = "xcode_config(name = 'host_xcodes')" |
| |
| def run_xcode_locator(repository_ctx, xcode_locator_src_label): |
| """Generates xcode-locator from source and runs it. |
| |
| Builds xcode-locator in the current repository directory. |
| Returns the standard output of running xcode-locator with -v, which will |
| return information about locally installed Xcode toolchains and the versions |
| they are associated with. |
| |
| This should only be invoked on a darwin OS, as xcode-locator cannot be built |
| otherwise. |
| |
| Args: |
| repository_ctx: The repository context. |
| xcode_locator_src_label: The label of the source file for xcode-locator. |
| Returns: |
| A 2-tuple containing: |
| output: A list representing installed xcode toolchain information. Each |
| element of the list is a struct containing information for one installed |
| toolchain. This is an empty list if there was an error building or |
| running xcode-locator. |
| err: An error string describing the error that occurred when attempting |
| to build and run xcode-locator, or None if the run was successful. |
| """ |
| xcodeloc_src_path = str(repository_ctx.path(xcode_locator_src_label)) |
| xcrun_result = repository_ctx.execute([ |
| "env", |
| "-i", |
| "xcrun", |
| "clang", |
| "-fobjc-arc", |
| "-framework", |
| "CoreServices", |
| "-framework", |
| "Foundation", |
| "-o", |
| "xcode-locator-bin", |
| xcodeloc_src_path, |
| ], 30) |
| |
| if (xcrun_result.return_code != 0): |
| suggestion = "" |
| if "Agreeing to the Xcode/iOS license" in xcrun_result.stderr: |
| suggestion = ("(You may need to sign the xcode license." + |
| " Try running 'sudo xcodebuild -license')") |
| error_msg = ( |
| "Generating xcode-locator-bin failed. {suggestion} " + |
| "return code {code}, stderr: {err}, stdout: {out}" |
| ).format( |
| suggestion = suggestion, |
| code = xcrun_result.return_code, |
| err = xcrun_result.stderr, |
| out = xcrun_result.stdout, |
| ) |
| return ([], error_msg.replace("\n", " ")) |
| |
| xcode_locator_result = repository_ctx.execute(["./xcode-locator-bin", "-v"], 30) |
| if (xcode_locator_result.return_code != 0): |
| error_msg = ( |
| "Invoking xcode-locator failed, " + |
| "return code {code}, stderr: {err}, stdout: {out}" |
| ).format( |
| code = xcode_locator_result.return_code, |
| err = xcode_locator_result.stderr, |
| out = xcode_locator_result.stdout, |
| ) |
| return ([], error_msg.replace("\n", " ")) |
| xcode_toolchains = [] |
| |
| # xcode_dump is comprised of newlines with different installed xcode versions, |
| # each line of the form <version>:<comma_separated_aliases>:<developer_dir>. |
| xcode_dump = xcode_locator_result.stdout |
| for xcodeversion in xcode_dump.split("\n"): |
| if ":" in xcodeversion: |
| infosplit = xcodeversion.split(":") |
| toolchain = struct( |
| version = infosplit[0], |
| aliases = infosplit[1].split(","), |
| developer_dir = infosplit[2], |
| ) |
| xcode_toolchains.append(toolchain) |
| return (xcode_toolchains, None) |
| |
| def _darwin_build_file(repository_ctx): |
| """Evaluates local system state to create xcode_config and xcode_version targets.""" |
| xcodebuild_result = repository_ctx.execute(["env", "-i", "xcrun", "xcodebuild", "-version"], 30) |
| |
| # "xcodebuild -version" failing may be indicative of no versions of xcode |
| # installed, which is an acceptable machine configuration to have for using |
| # bazel. Thus no print warning should be emitted here. |
| if (xcodebuild_result.return_code != 0): |
| error_msg = ( |
| "Running xcodebuild -version failed, " + |
| "return code {code}, stderr: {err}, stdout: {out}" |
| ).format( |
| code = xcodebuild_result.return_code, |
| err = xcodebuild_result.stderr, |
| out = xcodebuild_result.stdout, |
| ) |
| return VERSION_CONFIG_STUB + "\n# Error: " + error_msg.replace("\n", " ") + "\n" |
| |
| (toolchains, xcodeloc_err) = run_xcode_locator( |
| repository_ctx, |
| Label(repository_ctx.attr.xcode_locator), |
| ) |
| |
| if xcodeloc_err: |
| return VERSION_CONFIG_STUB + "\n# Error: " + xcodeloc_err + "\n" |
| |
| default_xcode_version = _search_string(xcodebuild_result.stdout, "Xcode ", "\n") |
| default_xcode_target = "" |
| target_names = [] |
| buildcontents = "" |
| |
| for toolchain in toolchains: |
| version = toolchain.version |
| aliases = toolchain.aliases |
| developer_dir = toolchain.developer_dir |
| target_name = "version%s" % version.replace(".", "_") |
| buildcontents += _xcode_version_output(repository_ctx, target_name, version, aliases, developer_dir) |
| target_names.append("':%s'" % target_name) |
| if (version == default_xcode_version or default_xcode_version in aliases): |
| default_xcode_target = target_name |
| buildcontents += "xcode_config(name = 'host_xcodes'," |
| if target_names: |
| buildcontents += "\n versions = [%s]," % ", ".join(target_names) |
| if default_xcode_target: |
| buildcontents += "\n default = ':%s'," % default_xcode_target |
| buildcontents += "\n)\n" |
| return buildcontents |
| |
| def _impl(repository_ctx): |
| """Implementation for the local_config_xcode repository rule. |
| |
| Generates a BUILD file containing a root xcode_config target named 'host_xcodes', |
| which points to an xcode_version target for each version of xcode installed on |
| the local host machine. If no versions of xcode are present on the machine |
| (for instance, if this is a non-darwin OS), creates a stub target. |
| |
| Args: |
| repository_ctx: The repository context. |
| """ |
| |
| os_name = repository_ctx.os.name.lower() |
| build_contents = "package(default_visibility = ['//visibility:public'])\n\n" |
| if (os_name.startswith("mac os")): |
| build_contents += _darwin_build_file(repository_ctx) |
| else: |
| build_contents += VERSION_CONFIG_STUB |
| repository_ctx.file("BUILD", build_contents) |
| |
| xcode_autoconf = repository_rule( |
| implementation = _impl, |
| local = True, |
| attrs = { |
| "xcode_locator": attr.string(), |
| }, |
| ) |
| |
| def xcode_configure(xcode_locator_label): |
| """Generates a repository containing host xcode version information.""" |
| xcode_autoconf( |
| name = "local_config_xcode", |
| xcode_locator = xcode_locator_label, |
| ) |
