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C++: Add compound error linked statically but not exported (bazelbuil…
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…d#16113)

Co-authored-by: kshyanashree <109167932+kshyanashree@users.noreply.github.com>
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oquenchil and ShreeM01 authored Aug 16, 2022
1 parent 83041b1 commit c62496f
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Showing 3 changed files with 47 additions and 2 deletions.
Original file line number Diff line number Diff line change
Expand Up @@ -267,6 +267,7 @@ def _filter_inputs(
unaccounted_for_libs = []
exports = {}
owners_seen = {}
linked_statically_but_not_exported = {}
for linker_input in dependency_linker_inputs:
owner = str(linker_input.owner)
if owner in owners_seen:
Expand All @@ -277,8 +278,7 @@ def _filter_inputs(
linker_inputs.append(dynamic_linker_input)
elif owner in link_statically_labels:
if owner in link_once_static_libs_map:
fail(owner + " is already linked statically in " +
link_once_static_libs_map[owner] + " but not exported")
linked_statically_but_not_exported.setdefault(link_once_static_libs_map[owner], []).append(owner)

is_direct_export = owner in direct_exports

Expand Down Expand Up @@ -337,9 +337,27 @@ def _filter_inputs(
else:
unaccounted_for_libs.append(linker_input.owner)

_throw_linked_but_not_exported_errors(linked_statically_but_not_exported)
_throw_error_if_unaccounted_libs(unaccounted_for_libs)
return (exports, linker_inputs, link_once_static_libs, precompiled_only_dynamic_libraries)

def _throw_linked_but_not_exported_errors(error_libs_dict):
if not error_libs_dict:
return

error_builder = ["The following libraries were linked statically by different cc_shared_libraries but not exported:\n"]
for cc_shared_library_target, error_libs in error_libs_dict.items():
error_builder.append("cc_shared_library %s:\n" % str(cc_shared_library_target))
for error_lib in error_libs:
error_builder.append(" \"%s\",\n" % str(error_lib))

error_builder.append("If you are sure that the previous libraries are exported by the cc_shared_libraries because:\n")
error_builder.append(" 1. You have visibility declarations in the source code\n")
error_builder.append(" 2. Or you are passing a visibility script to the linker to export symbols from them\n")
error_builder.append("then add those libraries to roots or exports_filter for each cc_shared_library.\n")

fail("".join(error_builder))

def _throw_error_if_unaccounted_libs(unaccounted_for_libs):
if not unaccounted_for_libs:
return
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -282,6 +282,14 @@ build_failure_test(
target_under_test = "//src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library/failing_targets:should_fail_binary",
)

build_failure_test(
name = "link_once_repeated_test_shared_lib",
messages = [
"cc_shared_library/test_cc_shared_library:barX\",",
],
target_under_test = "//src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library/failing_targets:should_fail_shared_lib",
)

paths_test(
name = "path_matching_test",
)
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,25 @@ cc_binary(
],
)

cc_shared_library(
name = "should_fail_shared_lib",
dynamic_deps = ["//src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library:bar_so"],
roots = [
":intermediate",
],
static_deps = [
"//src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library:barX",
],
tags = TAGS,
)

cc_library(
name = "intermediate",
deps = [
"//src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library:barX",
],
)

cc_shared_library(
name = "permissions_fail_so",
roots = [
Expand Down

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