build: fix libressl detection

Checking libcrypto for a function after we've already found a (possibly
different) libcrypto is not what we want to do here.

pkg-config might've found a cross lib while AC_CHECK_LIB may find a different
or native one.

Run a link-test against the lib that's already been found instead.
This commit is contained in:
Cory Fields 2015-07-31 23:15:56 -04:00 committed by Holger Schinzel
parent 6010b5e7a0
commit f88c44c453

View File

@ -714,6 +714,21 @@ LIBS_TEMP="$LIBS"
CFLAGS="$CFLAGS $SSL_CFLAGS $CRYPTO_CFLAGS"
LIBS="$LIBS $SSL_LIBS $CRYPTO_LIBS"
AC_CHECK_HEADER([openssl/ec.h],, AC_MSG_ERROR(OpenSSL ec header missing),)
AC_MSG_CHECKING(for a supported OpenSSL version)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <openssl/rand.h>
]],
[[RAND_egd(NULL);]])],
[AC_MSG_RESULT(yes)],
[
AC_ARG_WITH([libressl],
[AS_HELP_STRING([--with-libressl],[Build with system LibreSSL (default is no; DANGEROUS; NOT SUPPORTED)])],
[AC_MSG_WARN([Detected LibreSSL: This is NOT supported, and may break consensus compatibility!])],
[AC_MSG_ERROR([Detected LibreSSL: This is NOT supported, and may break consensus compatibility!])]
)]
)
CFLAGS="$CFLAGS_TEMP"
LIBS="$LIBS_TEMP"