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- dnl Check to find the LibreSSL/OpenSSL headers/libraries
- AC_DEFUN([tinc_OPENSSL],
- [
- case $host_os in
- *mingw*)
- ;;
- *)
- AC_CHECK_FUNC(dlopen,
- [],
- [AC_CHECK_LIB(dl, dlopen,
- [LIBS="$LIBS -ldl"],
- [AC_MSG_ERROR([LibreSSL/OpenSSL depends on libdl.]); break]
- )]
- )
- ;;
- esac
- AC_ARG_WITH(openssl,
- AS_HELP_STRING([--with-openssl=DIR], [LibreSSL/OpenSSL base directory, or:]),
- [openssl="$withval"
- CPPFLAGS="$CPPFLAGS -I$withval/include"
- LDFLAGS="$LDFLAGS -L$withval/lib"]
- )
- AC_ARG_WITH(openssl-include,
- AS_HELP_STRING([--with-openssl-include=DIR], [LibreSSL/OpenSSL headers directory (without trailing /openssl)]),
- [openssl_include="$withval"
- CPPFLAGS="$CPPFLAGS -I$withval"]
- )
- AC_ARG_WITH(openssl-lib,
- AS_HELP_STRING([--with-openssl-lib=DIR], [LibreSSL/OpenSSL library directory]),
- [openssl_lib="$withval"
- LDFLAGS="$LDFLAGS -L$withval"]
- )
- AC_CHECK_HEADERS([openssl/evp.h openssl/rsa.h openssl/rand.h openssl/err.h openssl/sha.h openssl/pem.h openssl/engine.h],
- [],
- [AC_MSG_ERROR([LibreSSL/OpenSSL header files not found.]); break]
- )
- AC_CHECK_LIB(crypto, OPENSSL_init_crypto,
- [LIBS="-lcrypto $LIBS"],
- [AC_MSG_ERROR([LibreSSL/OpenSSL libraries not found.])]
- )
- AC_DEFINE(HAVE_OPENSSL, 1, [enable OpenSSL support])
- ])
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