diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/configure.ac b/configure.ac index c2aa8ae..36758d4 100644 --- a/configure.ac +++ b/configure.ac @@ -1235,7 +1235,7 @@ 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.]), +AC_ARG_WITH(optimizations, AS_HELP_STRING([--with-optimizations], [Enable expensive optimizations (PGO, maybe LTO, etc). Disabled by default.]), [ if test "$withval" != no then @@ -1247,13 +1247,10 @@ else fi], [AC_MSG_RESULT(no)]) if test "$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 + # Intentionally not forcing Py_LTO='true' here. Too many toolchains do not + # compile working code using it and both test_distutils and test_gdb are + # broken when you do managed to get a toolchain that works with it. People + # who want LTO need to use --with-lto themselves. DEF_MAKE_ALL_RULE="profile-opt" REQUIRE_PGO="yes" DEF_MAKE_RULE="build_all" |