dnl Check to find the OpenSSL headers/libraries
-
AC_DEFUN(tinc_OPENSSL,
[
-
- AC_CACHE_CHECK([for openssl], tinc_cv_openssl_include,
- [
- AC_ARG_WITH(openssl,
- [ --with-openssl=DIR OpenSSL library and headers prefix],
- [echo -ne 'prefix...'
- openssl_lib="$withval/lib"
- openssl_include="$withval/include"]
- )
- AC_ARG_WITH(openssl-include,
- [ --with-openssl-include=DIR OpenSSL headers directory],
- [echo -ne 'includes...'
- openssl_include="$withvall"]
- )
- AC_ARG_WITH(openssl-lib,
- [ --with-openssl-lib=DIR OpenSSL library directory],
- [echo -ne 'libraries...'
- openssl_lib="$withval"]
- )
-
-if test "x$openssl_lib" != "x" ; then
- LIBS="$LIBS -L$openssl_lib"
-fi
-if test "x$openssl_include" != "x" ; then
- INCLUDES="$INCLUDES -I$openssl_include"
-fi
-
-AC_MSG_RESULT([done.])
- ])
-
-libcrypto=none
-AC_CHECK_LIB(crypto, SHA1_version, [
- libcrypto=yes
-])
-
-if test $libcrypto = none; then
- AC_MSG_ERROR(
-[It seems like OpenSSL is not installed on this system. But perhaps
-you need to supply the exact location of the headers and libraries.
-You can try running configure with the --with-openssl=/DIRECTORY
-parameter. If you installed the headers and libraries in a different
-location you can use --with-openssl-include=/DIR and
---with-openssl-lib=/DIR.])
-
-else
- LIBS="$LIBS -lcrypto"
-fi
-
+ tinc_ac_save_CPPFLAGS="$CPPFLAGS"
+
+ AC_ARG_WITH(openssl-include,
+ [ --with-openssl-include=DIR OpenSSL headers directory (without trailing /openssl)],
+ [openssl_include="$withval"
+ CFLAGS="$CFLAGS -I$withval"
+ CPPFLAGS="$CPPFLAGS -I$withval"]
+ )
+
+ AC_ARG_WITH(openssl-lib,
+ [ --with-openssl-lib=DIR OpenSSL library directory],
+ [openssl_lib="$withval"
+ LIBS="$LIBS -L$withval"]
+ )
+
+ AC_CHECK_HEADERS(openssl/evp.h openssl/rsa.h openssl/rand.h openssl/err.h openssl/sha.h openssl/pem.h,
+ [],
+ [AC_MSG_ERROR([OpenSSL header files not found.]); break]
+ )
+
+ CPPFLAGS="$tinc_ac_save_CPPFLAGS"
+
+ AC_CHECK_LIB(crypto, SHA1_version,
+ [LIBS="$LIBS -lcrypto"],
+ [AC_MSG_ERROR([OpenSSL libraries not found.])]
+ )
+
+ AC_CHECK_FUNCS(RAND_pseudo_bytes)
+
+ AC_CHECK_FUNC(OpenSSL_add_all_algorithms,
+ [],
+ [AC_CHECK_FUNC(SSLeay_add_all_algorithms,
+ [AC_DEFINE(HAVE_SSLEAY_ADD_ALL_ALGORITHMS, 1, [Defined if this function should be used instead of OpenSLL_add_all_algorithms])],
+ [AC_MSG_ERROR([Missing required OpenSSL functionality!])]
+ )]
+ )
+
+ AC_CHECK_FUNC(dlopen,
+ [],
+ [AC_CHECK_LIB(dl, dlopen,
+ [LIBS="$LIBS -ldl"],
+ [AC_MSG_ERROR([OpenSSL depends on libdl.])]
+ )]
+ )
])