-
- 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="$withvall"]
+ tinc_ac_save_CPPFLAGS="$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(dlopen,
+ [],
+ AC_CHECK_LIB(dl, dlopen,
+ [LIBS="$LIBS -ldl"],
+ [AC_MSG_ERROR("OpenSSL depends on libdl.")]