tinc/m4/openssl.m4
2019-08-26 13:44:36 +02:00

49 lines
1.2 KiB
Text

dnl Check to find the OpenSSL headers/libraries
AC_DEFUN(tinc_OPENSSL,
[
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="$LIBS -lcrypto"],
[AC_MSG_ERROR("OpenSSL libraries not found.")]
)
AC_CHECK_FUNCS(RAND_pseudo_bytes)
AC_CHECK_FUNC(OpenSSL_add_all_algorithms,
[],
AC_CHECK_FUNC(SSLeay_add_all_algorithms,
[AC_DEFINE(HAVE_SSLEAY_ADD_ALL_ALGORITHMS)],
[AC_MSG_ERROR("Missing required OpenSSL functionality!")]
)
)
AC_CHECK_FUNC(dlopen,
[],
AC_CHECK_LIB(dl, dlopen,
[LIBS="$LIBS -ldl"],
[AC_MSG_ERROR("OpenSSL depends on libdl.")]
)
)
])