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configure.ac: Add custom optimization level ac_arg_with.

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This commit is contained in:
Jason Volk 2018-05-28 02:45:34 -07:00
parent a2c98d3be5
commit 1f92aee9dd
1 changed files with 37 additions and 2 deletions
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39
configure.ac
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@ -205,6 +205,40 @@ AC_ARG_ENABLE(optimize, AC_HELP_STRING([--enable-optimize], [Enable optimization
AM_CONDITIONAL([OPTIMIZE], [[[[ "$OPTIMIZE" = "1" ]]]])
dnl
dnl Explicit optimization level switch
dnl
AC_MSG_CHECKING(whether to explicitly set the optimization level)
AC_ARG_WITH(optimize-level, AC_HELP_STRING([--with-optimize-level[[[=3]]]], [Explicitly set the optimize level]),
[
optimize_level=$withval
AC_MSG_RESULT([yes, enabling optimization level -O$optimize_level])
AC_SUBST(OPTMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], [$optimize_level], [User configured optimization level])
], [
AM_COND_IF(OPTIMIZE,
[
optimize_level="3"
AC_MSG_RESULT([no, but --enable-optimize has implied level -O$optimize_level])
AC_SUBST(OPTIMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], [$optimize_level], [Explicitly set release mode optimization])
], [
AM_COND_IF(DEBUG,
[
optimize_level="g"
AC_MSG_RESULT([no, but --enable-debug has implied level -O$optimize_level])
AC_SUBST(OPTIMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], [$optimize_level], [Debug mode optimization level])
], [
optimize_level="3"
AC_MSG_RESULT([no, but release mode has implied level -O$optimize_level])
AC_SUBST(OPTIMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], [$optimize_level], [Release mode optimization])
])
])
])
dnl
dnl Explicit log level
dnl
@ -293,7 +327,7 @@ dnl
AM_COND_IF([OPTIMIZE],
[
CXXFLAGS+=" -O3"
CXXFLAGS+=" -O$optimize_level"
CXXFLAGS+=" -fweb"
CXXFLAGS+=" -fdata-sections"
CXXFLAGS+=" -ffunction-sections"
@ -316,7 +350,7 @@ AM_COND_IF([OPTIMIZE],
dnl remember to axe this when lto is enabled
CXXFLAGS+=" -ggdb"
], [
CXXFLAGS+=" -Og"
CXXFLAGS+=" -O$optimize_level"
CXXFLAGS+=" -ggdb"
])
@ -1540,6 +1574,7 @@ echo "Precompiled headers ............... $build_pch"
echo "Developer debug ................... $debug"
echo "Developer assert .................. $assert"
echo "Optimized build ................... $optimize"
echo "Optimization level ................ $optimize_level"
echo "Logging level ..................... $LOG_LEVEL"
echo "Installing into ................... $prefix"
echo