mirror of
https://github.com/matrix-construct/construct
synced 2024-12-25 15:04:10 +01:00
configure: Add --enable-lto for explicit toggle of -flto.
This commit is contained in:
parent
706563195e
commit
74612e9474
1 changed files with 30 additions and 6 deletions
36
configure.ac
36
configure.ac
|
@ -227,6 +227,26 @@ AC_ARG_ENABLE(optimize, AC_HELP_STRING([--enable-optimize], [Enable optimization
|
|||
|
||||
AM_CONDITIONAL([OPTIMIZE], [[[[ "$OPTIMIZE" = "1" ]]]])
|
||||
|
||||
dnl
|
||||
dnl Explicit link-time-optimization switch
|
||||
dnl
|
||||
|
||||
AC_MSG_CHECKING(whether to enable link-time optimization)
|
||||
AC_ARG_ENABLE(lto, AC_HELP_STRING([--enable-lto], [Enable link-time optimization]),
|
||||
[
|
||||
AC_MSG_RESULT([yes])
|
||||
AC_SUBST(LTO, 1)
|
||||
], [
|
||||
AM_COND_IF(DEBUG,
|
||||
[
|
||||
AC_MSG_RESULT([no])
|
||||
], [
|
||||
AC_MSG_RESULT([no, link-time optimization is explicit-only at this time])
|
||||
])
|
||||
])
|
||||
|
||||
AM_CONDITIONAL([LTO], [[[[ "$LTO" = "1" ]]]])
|
||||
|
||||
dnl
|
||||
dnl Explicit optimization level switch
|
||||
dnl
|
||||
|
@ -399,6 +419,14 @@ dnl
|
|||
|
||||
CXXFLAGS+=" -O$optimize_level"
|
||||
|
||||
AM_COND_IF([LTO],
|
||||
[
|
||||
lto="yes"
|
||||
CXXFLAGS+=" -flto"
|
||||
], [
|
||||
lto="no"
|
||||
])
|
||||
|
||||
AM_COND_IF([OPTIMIZE],
|
||||
[
|
||||
CXXFLAGS+=" -fweb"
|
||||
|
@ -413,14 +441,9 @@ AM_COND_IF([OPTIMIZE],
|
|||
CXXFLAGS+=" -fira-hoist-pressure"
|
||||
CXXFLAGS+=" -fbranch-target-load-optimize"
|
||||
CXXFLAGS+=" -frerun-loop-opt"
|
||||
|
||||
dnl TODO: lto cannot be enabled until subobject linkage for json::tuple
|
||||
dnl is resolved
|
||||
dnl
|
||||
dnl CXXFLAGS+=" -flto"
|
||||
CXXFLAGS+=" -fdevirtualize-at-ltrans"
|
||||
|
||||
dnl remember to axe this when lto is enabled
|
||||
dnl Note these flags are unreliable with LTO
|
||||
CXXFLAGS+=" -g"
|
||||
CXXFLAGS+=" -ggdb"
|
||||
], [
|
||||
|
@ -1488,6 +1511,7 @@ echo "Precompiled headers ............... $build_pch"
|
|||
echo "Developer debug ................... $debug"
|
||||
echo "Developer assert .................. $assert"
|
||||
echo "Optimized build ................... $optimize"
|
||||
echo "Link-time optimized ............... $lto"
|
||||
echo "Optimization level ................ $optimize_level"
|
||||
echo "Generic binary .................... $enable_generic"
|
||||
echo "Logging level ..................... $LOG_LEVEL"
|
||||
|
|
Loading…
Reference in a new issue