77 lines
2.2 KiB
Text
77 lines
2.2 KiB
Text
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dnl Check for OpenSSL (LIBOPENSSL) compiler flags. On success, set
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dnl nut_have_openssl="yes" and nut_ssl_lib="OpenSSL", and define WITH_SSL,
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dnl WITH_OPENSSL, LIBSSL_CFLAGS and LIBSSL_LIBS. On failure, set
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dnl nut_have_libssl="no".
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dnl This macro can be run multiple times, but will do the checking only once.
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AC_DEFUN([NUT_CHECK_LIBOPENSSL],
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[
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if test -z "${nut_have_libopenssl_seen}"; then
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nut_have_libopenssl_seen=yes
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dnl save CFLAGS and LIBS
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CFLAGS_ORIG="${CFLAGS}"
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LIBS_ORIG="${LIBS}"
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AC_MSG_CHECKING(for OpenSSL version via pkg-config)
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OPENSSL_VERSION="`pkg-config --silence-errors --modversion openssl 2>/dev/null`"
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if test "$?" = "0" -a -n "${OPENSSL_VERSION}"; then
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CFLAGS="`pkg-config --silence-errors --cflags openssl 2>/dev/null`"
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LIBS="`pkg-config --silence-errors --libs openssl 2>/dev/null`"
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else
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OPENSSL_VERSION="none"
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CFLAGS=""
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LIBS="-lssl -lcrypto"
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fi
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AC_MSG_RESULT(${OPENSSL_VERSION} found)
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dnl allow overriding OpenSSL settings if the user knows best
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AC_MSG_CHECKING(for OpenSSL cflags)
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AC_ARG_WITH(openssl-includes,
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AS_HELP_STRING([@<:@--with-openssl-includes=CFLAGS@:>@], [include flags for the OpenSSL library]),
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[
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case "${withval}" in
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yes|no)
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AC_MSG_ERROR(invalid option --with(out)-openssl-includes - see docs/configure.txt)
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;;
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*)
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CFLAGS="${withval}"
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;;
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esac
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], [])
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AC_MSG_RESULT([${CFLAGS}])
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AC_MSG_CHECKING(for OpenSSL ldflags)
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AC_ARG_WITH(openssl-libs,
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AS_HELP_STRING([@<:@--with-openssl-libs=LIBS@:>@], [linker flags for the OpenSSL library]),
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[
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case "${withval}" in
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yes|no)
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AC_MSG_ERROR(invalid option --with(out)-openssl-libs - see docs/configure.txt)
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;;
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*)
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LIBS="${withval}"
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;;
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esac
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], [])
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AC_MSG_RESULT([${LIBS}])
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dnl check if openssl is usable
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AC_CHECK_HEADERS(openssl/ssl.h, [nut_have_openssl=yes], [nut_have_openssl=no], [AC_INCLUDES_DEFAULT])
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AC_CHECK_FUNCS(SSL_library_init, [], [nut_have_openssl=no])
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if test "${nut_have_openssl}" = "yes"; then
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nut_with_ssl="yes"
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nut_ssl_lib="(OpenSSL)"
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AC_DEFINE(WITH_SSL, 1, [Define to enable SSL support])
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AC_DEFINE(WITH_OPENSSL, 1, [Define to enable SSL support using OpenSSL])
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LIBSSL_CFLAGS="${CFLAGS}"
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LIBSSL_LIBS="${LIBS}"
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fi
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dnl restore original CFLAGS and LIBS
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CFLAGS="${CFLAGS_ORIG}"
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LIBS="${LIBS_ORIG}"
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fi
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])
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