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autoscan for c præprocessor now prefers $CPP to "$CC -E"

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tg 2007-01-17 17:08:34 +00:00
parent da03ad5be2
commit 478374ba3b
1 changed files with 15 additions and 14 deletions
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29
Build.sh
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@ -1,5 +1,5 @@
#!/bin/sh #!/bin/sh
# $MirOS: src/bin/mksh/Build.sh,v 1.118 2007/01/17 17:03:59 tg Exp $ # $MirOS: src/bin/mksh/Build.sh,v 1.119 2007/01/17 17:08:34 tg Exp $
#- #-
# Environment: CC, CFLAGS, CPP, CPPFLAGS, LDFLAGS, LIBS, NOWARN, NROFF # Environment: CC, CFLAGS, CPP, CPPFLAGS, LDFLAGS, LIBS, NOWARN, NROFF
# With -x (cross compile): TARGET_OS (default: uname -s) # With -x (cross compile): TARGET_OS (default: uname -s)
@ -116,8 +116,7 @@ if test -d mksh; then
exit 1 exit 1
fi fi
# XXX autoconf for gcc:-cc and $CPP : ${CPP=false} ${CC=gcc} ${NROFF=nroff}
: ${CC=gcc} ${NROFF=nroff}
curdir=`pwd` srcdir=`dirname "$0"` check_categories=pdksh curdir=`pwd` srcdir=`dirname "$0"` check_categories=pdksh
echo | $NROFF -v 2>&1 | grep GNU >/dev/null 2>&1 && NROFF="$NROFF -c" echo | $NROFF -v 2>&1 | grep GNU >/dev/null 2>&1 && NROFF="$NROFF -c"
@ -348,23 +347,25 @@ EOF
if test 1 = $NEED_MKSH_SIGNAME; then if test 1 = $NEED_MKSH_SIGNAME; then
$e "... checking how to run the C Preprocessor" $e "... checking how to run the C Preprocessor"
rm -f x rm -f x
( ( echo '#if (23 * 2 - 2) == (fnord + 2)' if test x"$CPP" != x"false"; then
echo mksh_rules: fnord
echo '#endif'
) | v "$CC -E - $CPPFLAGS -Dfnord=42 >x" ) 2>&$h | sed 's/^/] /'
if grep '^mksh_rules:.*42' x >/dev/null 2>&1; then
CPP="$CC -E -"
else
rm -f x
( ( echo '#if (23 * 2 - 2) == (fnord + 2)' ( ( echo '#if (23 * 2 - 2) == (fnord + 2)'
echo mksh_rules: fnord echo mksh_rules: fnord
echo '#endif' echo '#endif'
) | v "$CPP $CPPFLAGS -Dfnord=42 >x" ) 2>&$h | sed 's/^/] /' ) | v "$CPP $CPPFLAGS -Dfnord=42 >x" ) 2>&$h | sed 's/^/] /'
grep '^mksh_rules:.*42' x >/dev/null 2>&1 || CPP=no grep '^mksh_rules:.*42' x >/dev/null 2>&1 || CPP=false
rm -f x
fi
if test x"$CPP" = x"false"; then
CPP="$CC -E"
( ( echo '#if (23 * 2 - 2) == (fnord + 2)'
echo mksh_rules: fnord
echo '#endif'
) | v "$CPP $CPPFLAGS -Dfnord=42 >x" ) 2>&$h | sed 's/^/] /'
grep '^mksh_rules:.*42' x >/dev/null 2>&1 || CPP=false
rm -f x
fi fi
rm -f x
$e "$bi==> checking how to run the C Preprocessor...$ao $ui$CPP$ao" $e "$bi==> checking how to run the C Preprocessor...$ao $ui$CPP$ao"
test x"$CPP" = x"no" && exit 1 test x"$CPP" = x"false" && exit 1
fi fi
$e ... done. $e ... done.