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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.
pull/1/head
Cory Fields 7 years ago
parent
commit
d9add71951
  1. 23
      configure.ac

23
configure.ac

@ -680,19 +680,26 @@ else @@ -680,19 +680,26 @@ else
fi
fi
AC_CHECK_LIB([crypto],[RAND_egd],[],[
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_TEMP="$CFLAGS"
LIBS_TEMP="$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"

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