build: Detect openssl library/header mismatch.

[paraslash.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 053996d1606b13a1ff3da085d59a0f1451f065af..54f9fe1cfec169fa544d49a673860e2b9c207ca3 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -96,8 +96,14 @@ AC_CHECK_HEADER(openssl/ssl.h, [], [HAVE_OPENSSL=no])
 AC_CHECK_LIB([crypto], [RAND_bytes], [], [HAVE_OPENSSL=no])
 LIB_SUBST_FLAGS(openssl)
 if test $HAVE_OPENSSL = yes; then
-       AC_CHECK_LIB([crypto], [RSA_set0_key],
-               AC_DEFINE([HAVE_RSA_SET0_KEY], [1], [openssl-1.1]))
+       HAVE_RSA_SET0_KEY=yes
+       AC_CHECK_DECL([RSA_set0_key], [], [], [#include <openssl/rsa.h>])
+       AC_CHECK_LIB([crypto], [RSA_set0_key], [], [])
+       if test "$ac_cv_have_decl_RSA_set0_key" != "$ac_cv_lib_crypto_RSA_set0_key"; then
+               AC_MSG_ERROR([openssl header/library mismatch])
+       fi
+       test "$ac_cv_have_decl_RSA_set0_key" = yes &&
+               AC_DEFINE([HAVE_RSA_SET0_KEY], [1], [openssl >= 1.1])
 fi
 UNSTASH_FLAGS
 ######################################################################### gcrypt