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| author | Brett Cannon <brett@python.org> | 2016-09-06 17:12:40 -0700 |
|---|---|---|
| committer | Brett Cannon <brett@python.org> | 2016-09-06 17:12:40 -0700 |
| commit | 79fb79718919ac44afc061044bdf0253555d19d8 (patch) | |
| tree | d7e263f5a6d9e8135e1303e82fbd9953bf66140a /configure.ac | |
| parent | 717b479992299cb546612189b8ad4d68a3fa9c52 (diff) | |
| download | cpython-79fb79718919ac44afc061044bdf0253555d19d8.tar.gz | |
Issue #26359: Add the --with-optimizations configure flag.
The flag will activate LTO and PGO build support when available.
Thanks to Alecsandur Patrascu of Intel for the original patch.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 786796ad16..b511a79ba4 100644 --- a/configure.ac +++ b/configure.ac @@ -1282,6 +1282,37 @@ else AC_MSG_RESULT(no); Py_DEBUG='false' fi], [AC_MSG_RESULT(no)]) +# Enable optimization flags +AC_SUBST(DEF_MAKE_ALL_RULE) +AC_SUBST(DEF_MAKE_RULE) +Py_OPT='false' +AC_MSG_CHECKING(for --with-optimizations) +AC_ARG_WITH(optimizations, AS_HELP_STRING([--with-optimizations], [Enable all optimizations when available (LTO, PGO, etc). Disabled by default.]), +[ +if test "$withval" != no +then + Py_OPT='true' + AC_MSG_RESULT(yes); +else + Py_OPT='false' + AC_MSG_RESULT(no); +fi], +[AC_MSG_RESULT(no)]) +if test "$Py_OPT" = 'true' ; then + Py_LTO='true' + case $ac_sys_system in + Darwin*) + # At least on macOS El Capitan, LTO does not work with PGO. + Py_LTO='false' + ;; + esac + DEF_MAKE_ALL_RULE="profile-opt" + DEF_MAKE_RULE="build_all" +else + DEF_MAKE_ALL_RULE="build_all" + DEF_MAKE_RULE="all" +fi + # Enable LTO flags AC_SUBST(LTOFLAGS) AC_MSG_CHECKING(for --with-lto) @@ -5337,3 +5368,13 @@ $SHELL $srcdir/Modules/makesetup -c $srcdir/Modules/config.c.in \ -s Modules Modules/Setup.config \ Modules/Setup.local Modules/Setup mv config.c Modules + +if test "$Py_OPT" = 'false' -a "$Py_DEBUG" != 'true'; then + echo "" >&AS_MESSAGE_FD + echo "" >&AS_MESSAGE_FD + echo "If you want a release build with all optimizations active (LTO, PGO, etc)," + echo "please run ./configure --with-optimizations" >&AS_MESSAGE_FD + echo "" >&AS_MESSAGE_FD + echo "" >&AS_MESSAGE_FD +fi + |