diff options
| -rw-r--r-- | common.gypi | 11 | ||||
| -rwxr-xr-x | configure | 24 |
2 files changed, 35 insertions, 0 deletions
diff --git a/common.gypi b/common.gypi index 65eb7caf57..9d74b46a8d 100644 --- a/common.gypi +++ b/common.gypi @@ -176,6 +176,17 @@ ['OS!="mac" and OS!="win"', { 'cflags': [ '-fno-omit-frame-pointer' ], }], + ['OS=="linux"', { + 'variables': { + 'lto': ' -flto=4 -fuse-linker-plugin -ffat-lto-objects ', + }, + 'conditions': [ + ['enable_lto=="true"', { + 'cflags': ['<(lto)'], + 'ldflags': ['<(lto)'], + },], + ], + },], ['OS == "android"', { 'cflags': [ '-fPIE' ], 'ldflags': [ '-fPIE', '-pie' ] @@ -157,6 +157,11 @@ parser.add_option("--enable-vtune-profiling", "JavaScript code executed in nodejs. This feature is only available " "for x32, x86, and x64 architectures.") +parser.add_option("--enable-lto", + action="store_true", + dest="enable_lto", + help="Enable compiling with lto of a binary. This feature is only available " + "on linux with gcc and g++.") parser.add_option("--link-module", action="append", @@ -932,6 +937,25 @@ def configure_node(o): else: o['variables']['node_enable_v8_vtunejit'] = 'false' + if flavor != 'linux' and (options.enable_lto): + raise Exception( + 'The lto option is supported only on linux.') + + if flavor == 'linux': + if options.enable_lto: + version_checked = (5, 4, 1) + for compiler in [(CC, 'c'), (CXX, 'c++')]: + ok, is_clang, clang_version, compiler_version = \ + try_check_compiler(compiler[0], compiler[1]) + compiler_version_num = tuple(map(int, compiler_version)) + if is_clang or compiler_version_num < version_checked: + version_checked_str = ".".join(map(str, version_checked)) + raise Exception( + 'The option --enable-lto is supported for gcc and gxx %s' + ' or newer only.' % (version_checked_str)) + + o['variables']['enable_lto'] = b(options.enable_lto) + if flavor in ('solaris', 'mac', 'linux', 'freebsd'): use_dtrace = not options.without_dtrace # Don't enable by default on linux and freebsd |