+# Determine OpenSSL library version
+AC_MSG_CHECKING([OpenSSL library version])
+AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+#include <openssl/opensslv.h>
+#include <openssl/crypto.h>
+#define DATA "conftest.ssllibver"
+int main(void) {
+ FILE *fd;
+ int rc;
+
+ fd = fopen(DATA,"w");
+ if(fd == NULL)
+ exit(1);
+
+ if ((rc = fprintf(fd ,"%x (%s)\n", SSLeay(), SSLeay_version(SSLEAY_VERSION))) <0)
+ exit(1);
+
+ exit(0);
+}
+ ]])],
+ [
+ ssl_library_ver=`cat conftest.ssllibver`
+ AC_MSG_RESULT($ssl_library_ver)
+ ],
+ [
+ AC_MSG_RESULT(not found)
+ AC_MSG_ERROR(OpenSSL library not found.)
+ ],
+ [
+ AC_MSG_WARN([cross compiling: not checking])
+ ]
+)
+
+AC_ARG_WITH(openssl-header-check,
+ [ --without-openssl-header-check Disable OpenSSL version consistency check],
+ [ if test "x$withval" = "xno" ; then
+ openssl_check_nonfatal=1
+ fi
+ ]
+)
+
+# Sanity check OpenSSL headers
+AC_MSG_CHECKING([whether OpenSSL's headers match the library])
+AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <string.h>
+#include <openssl/opensslv.h>
+int main(void) { exit(SSLeay() == OPENSSL_VERSION_NUMBER ? 0 : 1); }
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ ],
+ [
+ AC_MSG_RESULT(no)
+ if test "x$openssl_check_nonfatal" = "x"; then
+ AC_MSG_ERROR([Your OpenSSL headers do not match your
+library. Check config.log for details.
+If you are sure your installation is consistent, you can disable the check
+by running "./configure --without-openssl-header-check".
+Also see contrib/findssl.sh for help identifying header/library mismatches.
+])
+ else
+ AC_MSG_WARN([Your OpenSSL headers do not match your
+library. Check config.log for details.
+Also see contrib/findssl.sh for help identifying header/library mismatches.])
+ fi
+ ],
+ [
+ AC_MSG_WARN([cross compiling: not checking])
+ ]
+)
+
+AC_MSG_CHECKING([if programs using OpenSSL functions will link])
+AC_LINK_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <openssl/evp.h>
+int main(void) { SSLeay_add_all_algorithms(); }
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ ],
+ [
+ AC_MSG_RESULT(no)
+ saved_LIBS="$LIBS"
+ LIBS="$LIBS -ldl"
+ AC_MSG_CHECKING([if programs using OpenSSL need -ldl])
+ AC_LINK_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <openssl/evp.h>
+int main(void) { SSLeay_add_all_algorithms(); }
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ ],
+ [
+ AC_MSG_RESULT(no)
+ LIBS="$saved_LIBS"
+ ]
+ )
+ ]
+)
+
+AC_ARG_WITH(ssl-engine,
+ [ --with-ssl-engine Enable OpenSSL (hardware) ENGINE support ],
+ [ if test "x$withval" != "xno" ; then
+ AC_MSG_CHECKING(for OpenSSL ENGINE support)
+ AC_TRY_COMPILE(
+ [ #include <openssl/engine.h>],
+ [
+ENGINE_load_builtin_engines();ENGINE_register_all_complete();
+ ],
+ [ AC_MSG_RESULT(yes)
+ AC_DEFINE(USE_OPENSSL_ENGINE, 1,
+ [Enable OpenSSL engine support])
+ ],
+ [ AC_MSG_ERROR(OpenSSL ENGINE support not found)]
+ )
+ fi ]
+)
+
+# Check for OpenSSL without EVP_aes_{192,256}_cbc
+AC_MSG_CHECKING([whether OpenSSL has crippled AES support])
+AC_LINK_IFELSE(