diff options
author | hlopko <hlopko@google.com> | 2018-07-19 11:34:51 -0700 |
---|---|---|
committer | Copybara-Service <copybara-piper@google.com> | 2018-07-19 11:36:29 -0700 |
commit | cfa35f3750d1ae37935bdf402a0cee306672795b (patch) | |
tree | 06037f6f8eef8edeeb6d63841dfa70415b8e23d1 /src/main/java/com/google/devtools/build/lib | |
parent | 866fda697b21a6aa129cd7513ec7638bc2ddd43d (diff) |
Move --linkopt flags into user_link_flags
Previous behavior was to put flags coming from Bazel option --linkopt into
legacy_link_flags. They should be in user_link_flags instead (together with
flags coming from linkopts rule attribute). This cl introduces
--experimental_linkopts_in_user_link_flags option that flips the behavior.
There is another incompatible change. Previously cc_common.create_link_variables() included flags from --linkopt, with the flag flipped it doesn't anymore. I believe
--linkopt flags shouldn't be there by default because:
* We don't tie the API with the specifics of C++ rules/options, enabling theoretical use with other languages (objc)
* Users are free to use ctx.fragments.cpp to access C++ options and add them explicitly (https://github.com/bazelbuild/bazel/issues/5602)
* New behavior maintains the symmetry with --copt and user_compile_flags
RELNOTES: None.
PiperOrigin-RevId: 205274272
Diffstat (limited to 'src/main/java/com/google/devtools/build/lib')
4 files changed, 29 insertions, 2 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java index 8a9fc665d4..82a4ae7176 100644 --- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java +++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java @@ -104,6 +104,10 @@ public final class CppConfiguration extends BuildConfiguration.Fragment return cppOptions.disableLinkingModeFlags; } + public boolean enableLinkoptsInUserLinkFlags() { + return cppOptions.enableLinkoptsInUserLinkFlags; + } + /** * An enumeration of all the tools that comprise a toolchain. */ diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppLinkActionBuilder.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppLinkActionBuilder.java index 56bca06241..8a99e731a3 100644 --- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppLinkActionBuilder.java +++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppLinkActionBuilder.java @@ -926,6 +926,16 @@ public class CppLinkActionBuilder { CcToolchainVariables variables; try { + ImmutableList<String> userLinkFlags; + if (cppConfiguration.enableLinkoptsInUserLinkFlags()) { + userLinkFlags = + ImmutableList.<String>builder() + .addAll(linkopts) + .addAll(toolchain.getLinkOptions()) + .build(); + } else { + userLinkFlags = ImmutableList.copyOf(linkopts); + } variables = LinkBuildVariables.setupVariables( getLinkType().linkerOrArchiver().equals(LinkerOrArchiver.LINKER), @@ -941,7 +951,7 @@ public class CppLinkActionBuilder { featureConfiguration, useTestOnlyFlags, isLtoIndexing, - ImmutableList.copyOf(linkopts), + userLinkFlags, toolchain.getInterfaceSoBuilder().getExecPathString(), interfaceOutput != null ? interfaceOutput.getExecPathString() : null, ltoOutputRootPrefix, diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java index 5992b22f5c..b5616f0890 100644 --- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java +++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java @@ -860,6 +860,17 @@ public class CppOptions extends FragmentOptions { + "field of CcLinkingInfo. See b/111289526.") public boolean enableCcDynamicLibrariesForRuntime; + @Option( + name = "experimental_linkopts_in_user_link_flags", + defaultValue = "false", + documentationCategory = OptionDocumentationCategory.UNDOCUMENTED, + effectTags = {OptionEffectTag.LOADING_AND_ANALYSIS, OptionEffectTag.LOADING_AND_ANALYSIS}, + metadataTags = {OptionMetadataTag.EXPERIMENTAL}, + help = + "If true, flags coming from --linkopt Bazel option will appear in user_link_flags " + + "crosstool variable.") + public boolean enableLinkoptsInUserLinkFlags; + @Override public FragmentOptions getHost() { CppOptions host = (CppOptions) getDefault(); diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/LinkBuildVariables.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/LinkBuildVariables.java index b57dc237be..a26b8b76cc 100644 --- a/src/main/java/com/google/devtools/build/lib/rules/cpp/LinkBuildVariables.java +++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/LinkBuildVariables.java @@ -329,7 +329,9 @@ public enum LinkBuildVariables { result.addAll(ccToolchainProvider.getTestOnlyLinkOptions()); } - result.addAll(ccToolchainProvider.getLinkOptions()); + if (!cppConfiguration.enableLinkoptsInUserLinkFlags()) { + result.addAll(ccToolchainProvider.getLinkOptions()); + } // -pie is not compatible with shared and should be // removed when the latter is part of the link command. Should we need to further |