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Allow the feature configuration to support structured build variables of nested 

list type.

RELNOTES: None.
PiperOrigin-RevId: 100024899
This commit is contained in:
klimek 2015-08-06 15:15:31 +02:00 committed by Marcel Hlopko
parent 8ac56c2bb2
commit 7918071584
1 changed files with 18 additions and 0 deletions
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18
third_party/com/github/bazelbuild/bazel/src/main/protobuf/crosstool_config.proto vendored
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@ -64,9 +64,27 @@ message CToolchain {
// ... will get expanded to -I /to/path1 -I /to/path2 ... for each // ... will get expanded to -I /to/path1 -I /to/path2 ... for each
// include_path /to/pathN. // include_path /to/pathN.
// //
// Flag groups can be nested; if they are, the flag group must only contain
// other flag groups (no flags) so the order is unambiguously specified.
// Nested flag groups require build variables of nested list types, and
// will be expanded recursively.
//
// For example:
// flag_group {
// flag_group { flag: '--start-lib' }
// flag_group { flag: '%{object_files}' }
// flag_group { flag: '--end-lib' }
// }
// ... will get expanded to
// --start-lib a1.o a2.o ... --end-lib --start-lib b1.o b2.o .. --end-lib
// with %{object_files} being a variable of nested list type
// [['a1.o', 'a2.o', ...], ['b1.o', 'b2.o', ...], ...].
//
// TODO(bazel-team): Write more elaborate documentation and add a link to it. // TODO(bazel-team): Write more elaborate documentation and add a link to it.
message FlagGroup { message FlagGroup {
repeated string flag = 1; repeated string flag = 1;
repeated FlagGroup flag_group = 2;
} }
// A set of features; used to support logical 'and' when specifying feature // A set of features; used to support logical 'and' when specifying feature