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new option: --enable-strict-aliasing which adds -fstrict-aliasing to the

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gcc CFLAGS when optimizing. This does /very/ nice things to the progs code
and seems to work in general (which means gcc 2.96 shouldsn't be such a cow),
but I am not yet confident enough to enable it by default (would probably
need gcc version chedking for it anyway).
This commit is contained in:
Bill Currie 2001-11-20 04:50:21 +00:00
parent 025d520522
commit 60289d86e4
1 changed files with 5 additions and 0 deletions
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5
configure.ac
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@ -1109,6 +1109,10 @@ if test "x$optimize" = xyes; then
BUILD_TYPE="$BUILD_TYPE Optimize" BUILD_TYPE="$BUILD_TYPE Optimize"
if test "x$GCC" = xyes; then if test "x$GCC" = xyes; then
CFLAGS="$CFLAGS -O3 -ffast-math -funroll-loops -fomit-frame-pointer -fexpensive-optimizations" CFLAGS="$CFLAGS -O3 -ffast-math -funroll-loops -fomit-frame-pointer -fexpensive-optimizations"
AC_ARG_ENABLE(strict-aliasing,
[ --enable-strict-aliasing enable the -fstrict-aliasing ooption of gcc],
CFLAGS="$CFLAGS -fstrict-aliasing"
)
AC_MSG_CHECKING(for special compiler settings) AC_MSG_CHECKING(for special compiler settings)
case "${host_cpu}" in case "${host_cpu}" in
i?86) i?86)
@ -1734,6 +1738,7 @@ AC_MSG_RESULT([
IPv6 networking : $NETTYPE_IPV6 IPv6 networking : $NETTYPE_IPV6
Compression support: $HAVE_ZLIB Compression support: $HAVE_ZLIB
Compiler version : $CCVER Compiler version : $CCVER
Compiler flags : $CFLAGS
Shared game data directory: $sharepath Shared game data directory: $sharepath
Per-user game data directory: $userpath Per-user game data directory: $userpath