Error building cURL for armv7 architecture iPhone 4

I'm trying to build cURL from sources for the device (armv7). Here's what I do:

export CC="${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer/usr/bin/gcc"

export CFLAGS="-arch ${ARCH} -isysroot ${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDKVERS ION}.sdk -I${OPENSSL}/include -L${OPENSSL}"

./configure -prefix=${CURRENTPATH}/bin/${PLATFORM}${SDKVERSION}-${ARCH}.sdk --host=${ARCH}-apple-darwin --disable-shared -with-random=/dev/urandom --with-ssl > "${LOG}" 2>&1

make

make install

make clean

However, make fails with following error:

netrc.c: In function 'Curl_parsenetrc':

netrc.c:90: warning: assignment makes pointer from integer without a cast

netrc.c:95: error: dereferencing pointer to incomplete type

make[2]: *** [libcurl_la-netrc.lo] Error 1

make[1]: *** [all] Error 2

make: *** [all-recursive] Error 1

Also, I see errors in config.log like:

configure:5177: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Develope r/usr/bin/gcc -c -arch armv7 -isysroot /Applications/Xcode45-DP1.app/Contents/Developer/Platforms/iPhoneOS.platform/De veloper/SDKs/iPhoneOS5.0.sdk -I/OpenSSL/include -L/OpenSSL  conftest.c >&5

conftest.c: In function 'main':

conftest.c:60: error: size of array 'test_array' is negative

configure:5177: $? = 1

configure: failed program was:

/* confdefs.h */

By the way, this builds and works fine for i386 architecture, i.e., on the iOS simulator.

What can I do to get it to build for the iPhone (armv7)?