55 lines
1.7 KiB
Text
55 lines
1.7 KiB
Text
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dnl Check for LIBSSL compiler flags. On success, set nut_have_libssl="yes"
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dnl and set LIBSSL_CFLAGS and LIBSSL_LDFLAGS. On failure, set
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dnl nut_have_libssl="no". This macro can be run multiple times, but will
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dnl do the checking only once.
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AC_DEFUN([NUT_CHECK_LIBSSL],
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[
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if test -z "${nut_have_libssl_seen}"; then
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nut_have_libssl_seen=yes
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dnl save CFLAGS and LDFLAGS
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CFLAGS_ORIG="${CFLAGS}"
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LDFLAGS_ORIG="${LDFLAGS}"
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AC_MSG_CHECKING(for openssl version via pkg-config)
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OPENSSL_VERSION=`pkg-config --silence-errors --modversion openssl`
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if test "$?" = "0"; then
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AC_MSG_RESULT(${OPENSSL_VERSION} found)
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CFLAGS="`pkg-config --silence-errors --cflags openssl`"
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LDFLAGS="`pkg-config --silence-errors --libs openssl`"
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else
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AC_MSG_RESULT(not found)
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CFLAGS=""
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LDFLAGS="-lssl -lcrypto"
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fi
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dnl allow overriding openssl settings if the user knows best
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AC_MSG_CHECKING(for openssl cflags)
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AC_ARG_WITH(ssl-includes, [
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AC_HELP_STRING([--with-ssl-includes=CFLAGS], [include flags for the OpenSSL library])
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], [CFLAGS="${withval}"], [])
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AC_MSG_RESULT([${CFLAGS}])
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AC_MSG_CHECKING(for openssl ldflags)
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AC_ARG_WITH(ssl-libs, [
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AC_HELP_STRING([--with-ssl-libs=LDFLAGS], [linker flags for the OpenSSL library])
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], [LDFLAGS="${withval}"], [])
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AC_MSG_RESULT([${LDFLAGS}])
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dnl check if openssl is usable
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AC_CHECK_HEADERS(openssl/ssl.h, [nut_have_libssl=yes], [nut_have_libssl=no], [AC_INCLUDES_DEFAULT])
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AC_CHECK_FUNCS(SSL_library_init, [], [nut_have_libssl=no])
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if test "${nut_have_libssl}" = "yes"; then
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AC_DEFINE(HAVE_SSL, 1, [Define to enable SSL development code])
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LIBSSL_CFLAGS="${CFLAGS}"
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LIBSSL_LDFLAGS="${LDFLAGS}"
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fi
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dnl restore original CFLAGS and LDFLAGS
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CFLAGS="${CFLAGS_ORIG}"
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LDFLAGS="${LDFLAGS_ORIG}"
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fi
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])
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