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quakeforge/config.d/compiling.m4
Bill Currie 23613ca985 [simd] Get the new functions working on older hardware 
In some cases, gcc-11 does a good enough job translating normal looking
C expressions so use just those, but other times need to dig around for
an appropriate intrinsic.

Also, now need to disable psapi warnings when compiling for anything
less than avx.
2022-01-07 11:48:28 +09:00

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if test -d $srcdir/.git; then
cvs_def_enabled="!= xno"
cvs_def_disabled="= xyes"
else
cvs_def_enabled="= xyes"
cvs_def_disabled="!= xno"
fi
AC_MSG_CHECKING(for CFLAGS pre-set)
leave_cflags_alone=no
if test "x$CFLAGS" != "x"; then
leave_cflags_alone=yes
BUILD_TYPE="$BUILD_TYPE Custom"
fi
AC_MSG_RESULT([$leave_cflags_alone])
AC_MSG_CHECKING(for C99 inline)
c99_inline=no
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[inline int foo (int x) { return x * x; }
int (*bar) (int) = foo;]],
[[]])],
[c99_inline=no
AC_MSG_RESULT(no)],
[c99_inline=yes
AC_DEFINE(HAVE_C99INLINE, extern, define this if using c99 inline)
AC_MSG_RESULT(yes)]
)
AH_VERBATIM([HAVE_C99INLINE],
[#undef HAVE_C99INLINE
#ifdef HAVE_C99INLINE
# define GNU89INLINE
#else
# define GNU89INLINE extern
#endif])
if test "x$GCC" = xyes; then
set $CC
shift
args="$*"
AC_MSG_CHECKING(for gcc version)
CCVER="gcc `$CC --version | grep '[[0-9]]\.[[0-9]]' | sed -e 's/.*(GCC)//' -e 's/[[^0-9]]*\([[0-9.]]*\).*/\1/'`"
set $CCVER
save_IFS="$IFS"
IFS="."
set $2
CC_MAJ=$1
CC_MIN=$2
CC_SUB=$3
IFS="$save_IFS"
AC_MSG_RESULT($CCVER)
fi
AC_ARG_ENABLE(debug,
AS_HELP_STRING([--disable-debug], [compile without debugging]),
debug=$enable_debug
)
AC_MSG_CHECKING(for debugging)
if test "x$debug" != xno -a "x$leave_cflags_alone" != xyes; then
AC_MSG_RESULT(yes)
BUILD_TYPE="$BUILD_TYPE Debug"
DEBUG=-g
if test "x$GCC" = xyes; then
if test "$CC_MAJ" -ge 4; then
DEBUG=-g3
else
if test "$CC_MAJ" -eq 3 -a "$CC_MIN" -ge 1; then
DEBUG=-g3
fi
fi
fi
CFLAGS="$CFLAGS $DEBUG"
else
AC_MSG_RESULT(no)
fi
AC_ARG_ENABLE(optimize,
AS_HELP_STRING([--disable-optimize],
[compile without optimizations (for development)]),
optimize=$enable_optimize,
optimize=yes
)
AC_ARG_ENABLE(simd,
AS_HELP_STRING([--enable-simd@<:@=arg@:.@],
[enable SIMD support (default auto)]),
[],
[enable_simd=yes]
)
case "$enable_simd" in
no)
simd=no
;;
sse|sse2|avx|avx2)
QF_CC_OPTION(-m$enable_simd)
simd=$enable_simd
;;
yes)
for simd in avx2 avx sse2 sse; do
if lscpu | grep -q -w $simd; then
QF_CC_OPTION(-m$simd)
break
fi
done
;;
esac
case "$simd" in
avx*)
;;
*)
QF_CC_OPTION(-Wno-psabi)
;;
esac
AC_MSG_CHECKING(for optimization)
if test "x$optimize" = xyes -a "x$leave_cflags_alone" != "xyes"; then
AC_MSG_RESULT(yes)
BUILD_TYPE="$BUILD_TYPE Optimize"
if test "x$GCC" = xyes; then
saved_cflags="$CFLAGS"
CFLAGS=""
QF_CC_OPTION(-frename-registers)
dnl if test "$CC_MAJ" -ge 4; then
dnl QF_CC_OPTION(-finline-limit=32000 -Winline)
dnl fi
dnl heavy="-O2 $CFLAGS -ffast-math -fno-unsafe-math-optimizations -funroll-loops -fomit-frame-pointer -fexpensive-optimizations"
heavy="-O2 $CFLAGS -fno-fast-math -funroll-loops -fomit-frame-pointer -fexpensive-optimizations"
CFLAGS="$saved_cflags"
light="-O2"
AC_ARG_ENABLE(strict-aliasing,
AS_HELP_STRING([--enable-strict-aliasing],
[enable the -fstrict-aliasing option of gcc]))
if test "x$enable_strict_aliasing" = "xyes"; then
heavy="$heavy -fstrict-aliasing"
light="$light -fstrict-aliasing"
else
if test "x$enable_strict_aliasing" != "xno"; then
if test $CC_MAJ -ge 3; then
heavy="$heavy -fstrict-aliasing"
else
if test $CC_MAJ = 2 -a $CC_MIN = 96; then
light="$light -fno-strict-aliasing"
fi
fi
else
if test $CC_MAJ = 2 -a $CC_MIN = 96; then
light="$light -fno-strict-aliasing"
fi
fi
fi
AC_MSG_CHECKING(for special compiler settings)
AC_ARG_WITH(arch,
AS_HELP_STRING([--with-arch=ARCH],
[control compiler architecture directly]),
arch="$withval", arch=auto
)
case "$arch" in
auto)
case "${host_cpu}" in
i?86)
MORE_CFLAGS="-march=${host_cpu}"
;;
*)
MORE_CFLAGS=""
;;
esac
;;
no|"")
MORE_CFLAGS=""
;;
*)
MORE_CFLAGS="-march=$arch"
;;
esac
if test "x$MORE_CFLAGS" = x; then
AC_MSG_RESULT(no)
else
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $MORE_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[AC_MSG_RESULT(yes)],[CFLAGS="$save_CFLAGS"
AC_MSG_RESULT(no)
])
fi
if test $CC_MAJ = 2 -a $CC_MIN = 96; then
AC_MSG_CHECKING(if align options work)
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -malign-loops=2 -malign-jumps=2 -malign-functions=2"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[light="$light -malign-loops=2 -malign-jumps=2 -malign-functions=2"
AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)
])
CFLAGS="$save_CFLAGS"
CFLAGS="$CFLAGS $light"
else
CFLAGS="$CFLAGS $heavy"
fi
else
CFLAGS=-O2
fi
else
AC_MSG_RESULT(no)
fi
dnl CFLAGS for release and devel versions
AC_ARG_ENABLE(profile,
AS_HELP_STRING([--enable-profile],
[compile with profiling (for development)]),
profile=$enable_profile
)
if test "x$profile" = xyes; then
BUILD_TYPE="$BUILD_TYPE Profile"
if test "x$GCC" = xyes; then
CFLAGS="`echo $CFLAGS | sed -e 's/-fomit-frame-pointer//g'` -pg"
LDFLAGS="$LDFLAGS -pg"
else
CFLAGS="$CFLAGS -p"
fi
fi
check_pipe=no
if test "x$GCC" = xyes; then
dnl Check for -pipe vs -save-temps.
AC_MSG_CHECKING(for -pipe vs -save-temps)
AC_ARG_ENABLE(save-temps,
AS_HELP_STRING([--enable-save-temps], [save temporary files]),
AC_MSG_RESULT(-save-temps)
CFLAGS="$CFLAGS -save-temps"
BUILD_TYPE="$BUILD_TYPE Save-temps"
,
AC_MSG_RESULT(-pipe)
check_pipe=yes
)
fi
if test "x$check_pipe" = xyes; then
QF_CC_OPTION(-pipe)
fi
QF_CC_OPTION(-Wsign-compare)
if test $CC_MAJ -gt 4 -o $CC_MAJ -eq 4 -a $CC_MIN -ge 5; then
QF_CC_OPTION(-Wlogical-op)
fi
QF_CC_OPTION(-Wtype-limits)
QF_CC_OPTION_TEST([-fvisibility=hidden], [VISIBILITY=-fvisibility=hidden])
QF_CC_OPTION(-Wsuggest-attribute=pure)
QF_CC_OPTION(-Wsuggest-attribute=const)
QF_CC_OPTION(-Wsuggest-attribute=noreturn)
QF_CC_OPTION(-Wsuggest-attribute=format)
QF_CC_OPTION(-Wformat-nonliteral)
AC_ARG_ENABLE(coverage,
AS_HELP_STRING([--enable-coverage], [enable generation of data for gcov]))
if test "x$enable_coverage" = xyes; then
QF_CC_OPTION(-fprofile-arcs -ftest-coverage)
fi
dnl QuakeForge uses lots of BCPL-style (//) comments, which can cause problems
dnl with many compilers that do not support the latest ISO standards. Well,
dnl that is our cover story -- the reality is that we like them and do not want
dnl to give them up. :)
dnl Make the compiler swallow its pride...
if test "x$GCC" != xyes; then
AC_MSG_CHECKING(for how to deal with BCPL-style comments)
case "${host}" in
*-aix*)
CFLAGS="$CFLAGS -qcpluscmt"
AC_MSG_RESULT([-qcpluscmt])
;;
*-irix6*)
CFLAGS="$CFLAGS -Xcpluscomm"
AC_MSG_RESULT([-Xcpluscomm])
;;
*-solaris*)
CFLAGS="$CFLAGS -xCC"
AC_MSG_RESULT([-xCC])
;;
*)
AC_MSG_RESULT(nothing needed or no switch known)
;;
esac
fi
AC_ARG_ENABLE(Werror,
AS_HELP_STRING([--disable-Werror], [do not treat warnings as errors]))
dnl We want warnings, lots of warnings...
dnl The help text should be INVERTED before release!
dnl when in git, this test defaults to ENABLED.
dnl In a release, this test defaults to DISABLED.
if test "x$GCC" = "xyes"; then
if test "x$enable_Werror" $cvs_def_enabled; then
CFLAGS="$CFLAGS -Wall -Werror -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
else
CFLAGS="$CFLAGS -Wall"
fi
CFLAGS="$CFLAGS -fno-common"
fi
AS="$CC"
if test "x$SYSTYPE" = "xWIN32"; then
ASFLAGS="\$(DEFS) \$(CFLAGS) \$(CPPFLAGS) \$(DEFAULT_INCLUDES) \$(INCLUDES) -D_WIN32"
plugin_ldflags="-no-undefined"
plugin_libadd="-luser32 -lgdi32 -lwinmm"
case "$host_os" in
mingw*)
if test "x$host" != "x$build"; then
case "$build_os" in
cygwin*)
plugin_libadd=" -L/usr/lib/w32api $plugin_libadd"
;;
esac
fi
;;
esac
else
ASFLAGS="\$(DEFS) \$(CFLAGS) \$(CPPFLAGS) \$(DEFAULT_INCLUDES) \$(INCLUDES)"
plugin_ldflags=
plugin_libadd=
fi
ASFLAGS="$ASFLAGS -DQFASM"
CCASFLAGS="$ASFLAGS"
CCAS="$AS"
AC_SUBST(AS)
AC_SUBST(ASFLAGS)
AC_SUBST(CCAS)
AC_SUBST(CCASFLAGS)
QF_SUBST(plugin_ldflags)
QF_SUBST(plugin_libadd)
dnl Finalization of CFLAGS, LDFLAGS, and LIBS
AC_SUBST(CFLAGS)
AC_SUBST(LDFLAGS)
AC_SUBST(LIBS)
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