configure script and ldid - ios

Question

The excerpt form the configure scripts fails due to Killed: 9 error, which is that iOS 5 can only run signed apps. So I need to find a way to put ldid -s some where in these tests, only problem is where.
Anyone???
fails with
checking build system compiler gcc... no
checking build system compiler gcc -g -O2 ... no
checking build system compiler cc... no
checking build system compiler gcc... no
checking build system compiler c89... no
checking build system compiler c99... no
configure: error: Cannot find a build system compiler
and config.log
onfigure:15586: gcc -c -g -O2 conftest.c >&5
configure:15586: $? = 0
configure:15586: result: yes
configure:15586: checking sys/time.h presence
configure:15586: gcc -E conftest.c
configure:15586: $? = 0
configure:15586: result: yes
configure:15586: checking for sys/time.h
configure:15586: result: yes
configure:15677: checking build system compiler gcc
configure:15690: gcc conftest.c
conftest.c: In function 'main':
conftest.c:4: warning: incompatible implicit declaration of built-in function 'exit'
configure:15693: $? = 0
./configure: line 15675: 27218 Killed: 9 ./a.out
./configure: line 15695: ./b.out: No such file or directory
./configure: line 15695: ./a.exe: No such file or directory
./configure: line 15695: ./a_out.exe: No such file or directory
./configure: line 15695: ./conftest: No such file or directory
configure:15700: result: no
configure:15677: checking build system compiler gcc -g -O2
configure:15690: gcc -g -O2 conftest.c
conftest.c: In function 'main':
conftest.c:4: warning: incompatible implicit declaration of built-in function 'exit'
configure:15693: $? = 0
./configure: line 15675: 27234 Killed: 9 ./a.out
./configure: line 15695: ./b.out: No such file or directory
./configure: line 15695: ./a.exe: No such file or directory
./configure: line 15695: ./a_out.exe: No such file or directory
./configure: line 15695: ./conftest: No such file or directory
configure:15700: result: no
And finally the ./configure script..
if test -n "$CC_FOR_BUILD"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system compiler $CC_FOR_BUILD" >&5
$as_echo_n "checking build system compiler $CC_FOR_BUILD... " >&6; }
# remove anything that might look like compiler output to our "||" expression
rm -f conftest* a.out b.out a.exe a_out.exe
cat >conftest.c <<EOF
int
main ()
{
exit(0);
}
EOF
gmp_compile="$CC_FOR_BUILD conftest.c"
cc_for_build_works=no
if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$gmp_compile\""; } >&5
(eval $gmp_compile) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; then
if (./a.out || ./b.out || ./a.exe || ./a_out.exe || ./conftest) >&5 2>&1; then
cc_for_build_works=yes
fi
fi
rm -f conftest* a.out b.out a.exe a_out.exe
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cc_for_build_works" >&5
$as_echo "$cc_for_build_works" >&6; }
if test "$cc_for_build_works" = yes; then
:
else
as_fn_error $? "Specified CC_FOR_BUILD doesn't seem to work" "$LINENO" 5
fi
elif test -n "$HOST_CC"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system compiler $HOST_CC" >&5
$as_echo_n "checking build system compiler $HOST_CC... " >&6; }
# remove anything that might look like compiler output to our "||" expression
rm -f conftest* a.out b.out a.exe a_out.exe
cat >conftest.c <<EOF
int
main ()
{
exit(0);
}

Answer 1

I have to admit that my ability to read anything but the simplest shell scripts is pretty poor, but basically, you need to fake codesign the executable before you run it. It looks like the executable you want to run is called conftest, right? So, try signing it in this block:
if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$gmp_compile\""; } >&5
(eval $gmp_compile) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; then
#begin added code
ldid -S ./conftest
#end added code
if (./a.out || ./b.out || ./a.exe || ./a_out.exe || ./conftest) >&5 2>&1; then
cc_for_build_works=yes
fi
fi
Obviously, you might need to supply the full path to ldid (e.g. /usr/bin/ldid) if it's not found in the existing PATH.
Update: per poster's comment below, a.out is actually the executable that needs to be signed, not conftest.