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use an autoconf-like approach to check for arc4random(3)

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after gecko2 told me his mac recently has it and I found
out that Interix has it in -lcrypt and soon -lmirmake (:
This commit is contained in:
tg
2006-08-26 20:30:27 +00:00
parent 70c5762b38
commit 695503952f
4 changed files with 52 additions and 24 deletions
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47
Build.sh
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@@ -1,5 +1,5 @@
#!/bin/sh
# $MirOS: src/bin/mksh/Build.sh,v 1.50 2006/08/24 20:32:52 tg Exp $
# $MirOS: src/bin/mksh/Build.sh,v 1.51 2006/08/26 20:30:27 tg Exp $
#-
# Environment: CC, CFLAGS, CPPFLAGS, LDFLAGS, LIBS, NROFF
@@ -111,6 +111,51 @@ if test x"$sigseen" = x:; then
done >signames.inc
test -s signames.inc || exit 1
fi
$e Scanning for functions...
test 0 = "$HAVE_ARC4RANDOM" -o 0 = "$HAVE_ARC4RANDOM" ||
{
$e ... arc4random
cat >scn.c <<-'EOF'
#include <stdlib.h>
int main() { arc4random(); return (0); }
EOF
$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wno-error scn.c $LIBS
if test -e a.out -o -e a.exe; then
HAVE_ARC4RANDOM=1
$e "==> arc4random... yes"
else
HAVE_ARC4RANDOM=0
$e "==> arc4random... no"
fi
rm -f scn.c a.out a.exe
}
test 0 = "$HAVE_ARC4RANDOM_PUSH" -o 0 = "$HAVE_ARC4RANDOM_PUSH" ||
if test 1 = "$HAVE_ARC4RANDOM"; then
$e ... arc4random_push
cat >scn.c <<-'EOF'
#include <stdlib.h>
int main() { arc4random_push(1); return (0); }
EOF
$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wno-error scn.c $LIBS
if test -e a.out -o -e a.exe; then
HAVE_ARC4RANDOM_PUSH=1
$e "==> arc4random_push... yes"
else
HAVE_ARC4RANDOM_PUSH=0
$e "==> arc4random_push... no"
fi
rm -f scn.c a.out a.exe
else
HAVE_ARC4RANDOM_PUSH=0
fi
$e ... done.
CPPFLAGS="$CPPFLAGS -DHAVE_ARC4RANDOM=$HAVE_ARC4RANDOM \
-DHAVE_ARC4RANDOM_PUSH=$HAVE_ARC4RANDOM_PUSH"
(v "cd '$srcdir' && exec $CC $CFLAGS -I'$curdir' $CPPFLAGS" \
"$LDFLAGS $LDSTATIC -o '$curdir/mksh' $SRCS $LIBS") || exit 1
test -x mksh || exit 1