Changeset 971849b1 in mainline

Timestamp:

2019-08-17T12:49:43Z (5 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

4b65f9a

Parents:

2483f28

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2019-07-07 12:04:25)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2019-08-17 12:49:43)

Message:

Enable LTO for kernel

Files:

• kernel/meson.build (modified) (2 diffs)
• meson.build (modified) (3 diffs)

kernel/meson.build

@@ -62 +62 @@
 ]
 
+if CONFIG_LTO
+        kernel_link_args += [ '-flto' ]
+endif
+
 if CONFIG_STRIP_BINARIES
-        # TODO: let meson do this
+        # TODO: do this after disassembling
         kernel_link_args += [ '-s' ]
 endif
@@ -72 +76 @@
         cc.get_supported_arguments([ '-Wno-cast-function-type' ]),
 ]
+
+if CONFIG_LTO
+        kernel_c_args += [ '-flto' ]
+endif
 
 if cc.get_id() == 'clang'

meson.build

@@ -114 +114 @@
         'CONFIG_FPU',
         'CONFIG_LINE_DEBUG',
+        'CONFIG_LTO',
         'CONFIG_PCUT_SELF_TESTS',
         'CONFIG_PCUT_TESTS',
@@ -247 +248 @@
 
         '-D_HELENOS_SOURCE',
+
         '-Wa,--fatal-warnings',
 
         '-Wall',
         '-Wextra',
-
         '-Werror-implicit-function-declaration',
-
         '-Wwrite-strings',
         '-Wunknown-pragmas',
@@ -260 +260 @@
 
         '-pipe',
+
         '-ffunction-sections',
-
         '-fno-common',
-
         '-fdebug-prefix-map=' + meson.source_root() + '=.',
 ]