Ruby 1.8.7 and openssl 1.0.0

Archlinux upgrade openssl from 0.9.8 to 1.0.0 recently, which caused a big headache for me: all ruby distributions, except the latest ruby source code in svn, failed to compile with the new openssl, e.g. (compile error of 1.8.7):

ossl_ssl.c: In function ?ossl_sslctx_get_ciphers?:

ossl_ssl.c:626:19: error: ?STACK? undeclared (first use in this function)

ossl_ssl.c:626:19: note: each undeclared identifier is reported only once for each function it appears in

ossl_ssl.c:626:25: error: expected expression before ?)? token

ossl_ssl.c:629:47: error: expected expression before ?)? token

ossl_ssl.c:629:47: error: too few arguments to function ?sk_value?

/usr/include/openssl/stack.h:80:7: note: declared here

ossl_ssl.c: In function ?ossl_ssl_get_peer_cert_chain?:

ossl_ssl.c:1199:5: warning: passing argument 1 of ?sk_num? from incompatible pointer type

/usr/include/openssl/stack.h:79:5: note: expected ?const struct _STACK *? but argument is of type ?struct stack_st_X509 *?

ossl_ssl.c:1202:2: warning: passing argument 1 of ?sk_value? from incompatible pointer type

/usr/include/openssl/stack.h:80:7: note: expected ?const struct _STACK *? but argument is of type ?struct stack_st_X509 *?

ossl_ssl.c: In function ?ossl_ssl_get_cipher?:

ossl_ssl.c:1224:12: warning: assignment discards qualifiers from pointer target type

make[1]: *** [ossl_ssl.o] Error 1

make: *** [all] Error 1

Here's a patch for 1.8.7, it's a modified version of this. Copy and save it as openssl.patch in 1.8.7 source directory, run 'patch -p0 < openssl.patch' and recompile, there should be no errors anymore.