diff options
| author | atotic <atotic@google.com> | 2016-03-25 11:52:10 -0700 |
|---|---|---|
| committer | Commit bot <commit-bot@chromium.org> | 2016-03-25 18:53:12 +0000 |
| commit | fcb018ec85c2e56e44180bb3e2a822082826000d (patch) | |
| tree | fcb192c30669610f91a0416b733a77fc30c5f081 /build | |
| parent | 37a519748d7fef8a95eb513e9768c9523c744274 (diff) | |
| download | chromium_src-fcb018ec85c2e56e44180bb3e2a822082826000d.zip chromium_src-fcb018ec85c2e56e44180bb3e2a822082826000d.tar.gz chromium_src-fcb018ec85c2e56e44180bb3e2a822082826000d.tar.bz2 | |
adds gdb-index option for linker
This cl adds a new configuration flag to gold linker: "gdb_index"
The flag is on by default if is_desktop_linux && is_debug && is_component_build
The previous attempt to add this flag to all the builds was reverted
because of disk-space requirements. This checkin makes it a default
only for linux debug builds.
Why do this?
gold linker has a flag to automatically generate gdb-index section
inside shared libraries when linking.
Webkit single-file compile/linking time:
16.31s without gdb-index
16.11s with gdb-index
gdb startup time
~51s without gdb-index
~19s with gdb-index
BUG=
Committed: https://crrev.com/f68b7c07a30baac088b8eda055ba52835c04692c
Cr-Commit-Position: refs/heads/master@{#378600}
Review URL: https://codereview.chromium.org/1680943002
Cr-Commit-Position: refs/heads/master@{#383324}
Diffstat (limited to 'build')
| -rw-r--r-- | build/config/compiler/BUILD.gn | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn index 3a8327c..37d583e 100644 --- a/build/config/compiler/BUILD.gn +++ b/build/config/compiler/BUILD.gn @@ -75,6 +75,10 @@ declare_args() { # Omit unwind support in official builds to save space. # We can use breakpad for these builds. exclude_unwind_tables = is_chrome_branded && is_official_build + + # If true, gold linker will save symbol table inside object files. + # This speeds up gdb startup by 60% + gdb_index = false } # Apply the default logic for these values if they were not set explicitly. @@ -300,6 +304,10 @@ config("compiler") { #"-Wl,--thread-count=4", ] + if (gdb_index) { + ldflags += [ "-Wl,--gdb-index" ] + } + if (!using_sanitizer && !(is_android && use_order_profiling)) { # TODO(brettw) common.gypi has this only for target toolset. ldflags += [ "-Wl,--icf=all" ] |