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Configure: move --noexecstack probe to Configure. 

config probe doesn't work in cross-compile scenarios or with clang.
In addition consolidate -Qunused-arguments handling.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6174)
This commit is contained in:
Andy Polyakov 2018-05-04 14:06:44 +02:00
parent 0d94212a04
commit 0ad4078cd6
3 changed files with 22 additions and 14 deletions
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2
Configurations/15-android.conf
View File

@ -65,7 +65,7 @@
my ($api, $arch) = ($1, $2);
my $triarch = $triplet{$arch};
my $cflags = "-Wa,--noexecstack";
my $cflags;
my $cppflags;
# see if there is NDK clang on $PATH

26
Configure
View File

@ -1427,6 +1427,27 @@ if (!$disabled{makedepend}) {
}
}
if (!$disabled{asm}) {
# probe for -Wa,--noexecstack option...
if ($predefined{__clang__}) {
# clang has builtin assembler, which doesn't recognize --help,
# but it apparently recognizes the option in question on all
# supported platforms even when it's meaningless. In other words
# probe would fail, but probed option always accepted...
push @{$config{cflags}}, "-Wa,--noexecstack", "-Qunused-arguments";
} elsif ($^O ne 'VMS') {
my $cc = $config{CROSS_COMPILE}.$config{CC};
open(PIPE, "$cc -Wa,--help -c -o null.$$.o -x assembler /dev/null 2>&1 |");
while(<PIPE>) {
if (m/--noexecstack/) {
push @{$config{cflags}}, "-Wa,--noexecstack";
last;
}
}
close(PIPE);
unlink("null.$$.o");
}
}
# Deal with bn_ops ###################################################
@ -1468,11 +1489,6 @@ if (defined($config{api})) {
push @{$config{defines}}, $apiflag;
}
if (defined($predefined{__clang__}) && !$disabled{asm}) {
push @{$config{cflags}}, "-Qunused-arguments";
push @{$config{cxxflags}}, "-Qunused-arguments" if $config{CXX};
}
if ($strict_warnings)
{
my $wopt;

8
config
View File

@ -840,14 +840,6 @@ if [ -n "$CONFIG_OPTIONS" ]; then
options="$options $CONFIG_OPTIONS"
fi
if expr "$options" : '.*no\-asm' > /dev/null; then :; else
if sh -c "$CROSS_COMPILE${CC:-gcc} -Wa,--help -c -o /tmp/null.$$.o -x assembler /dev/null && rm /tmp/null.$$.o" 2>&1 | \
grep \\--noexecstack >/dev/null; then
__CNF_CFLAGS="$__CNF_CFLAGS -Wa,--noexecstack"
__CNF_CXXFLAGS="$__CNF_CXXFLAGS -Wa,--noexecstack"
fi
fi
# gcc < 2.8 does not support -march=ultrasparc
if [ "$OUT" = solaris-sparcv9-gcc -a $GCCVER -lt 28 ]
then