+# Checks for libraries
+
+# check for libcurl
+AC_ARG_ENABLE(curl,
+ AC_HELP_STRING([--enable-curl], [Enable downloading with curl
+ [[default=yes]] ]),
+ [want_curl="$enableval"], [want_curl="yes"])
+
+if test "x$want_curl" = "xyes"; then
+ PKG_CHECK_MODULES(CURL, libcurl)
+ AC_DEFINE(HAVE_CURL, 1, [Define if you want CURL support])
+fi
+
+# check for sha256
+AC_ARG_ENABLE(sha256,
+ AC_HELP_STRING([--enable-sha256], [Enable sha256sum check
+ [[default=yes]] ]),
+ [want_sha256="$enableval"], [want_sha256="yes"])
+
+if test "x$want_sha256" = "xyes"; then
+ AC_DEFINE(HAVE_SHA256, 1, [Define if you want sha256 support])
+fi
+AM_CONDITIONAL(HAVE_SHA256, test "x$want_sha256" = "xyes")
+
+# check for openssl
+AC_ARG_ENABLE(openssl,
+ AC_HELP_STRING([--enable-openssl], [Enable signature checking with OpenSSL
+ [[default=no]] ]),
+ [want_openssl="$enableval"], [want_openssl="no"])
+
+if test "x$want_openssl" = "xyes"; then
+ PKG_CHECK_MODULES(OPENSSL, openssl)
+ AC_DEFINE(HAVE_OPENSSL, 1, [Define if you want OpenSSL support])
+fi
+
+
+dnl **********
+dnl GPGME
+dnl **********
+
+AC_ARG_ENABLE(gpg,
+ AC_HELP_STRING([--enable-gpg], [Enable signature checking with gpgme
+ [[default=yes]] ]),
+ [want_gpgme="$enableval"], [want_gpgme="yes"])
+
+if test "x$want_gpgme" = "xyes"; then
+ ok="no"
+ min_gpgme_version=1.0.0
+ AC_PATH_PROG(GPGME_CONFIG, gpgme-config, "failed")
+ if test $GPGME_CONFIG != "failed" ; then
+ AC_MSG_CHECKING(for GPGME - version >= $min_gpgme_version)
+ req_major=`echo $min_gpgme_version | \
+ sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
+ req_minor=`echo $min_gpgme_version | \
+ sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
+ req_micro=`echo $min_gpgme_version | \
+ sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
+ gpgme_config_version=`$GPGME_CONFIG --version`
+ major=`echo $gpgme_config_version | \
+ sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
+ minor=`echo $gpgme_config_version | \
+ sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
+ micro=`echo $gpgme_config_version | \
+ sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
+
+ if test "$major" -eq "$req_major"; then
+ if test "$minor" -ge "$req_minor"; then
+ if test "$micro" -ge "$req_micro"; then
+ ok="yes"
+ fi
+ fi
+ fi
+ fi
+
+ if test $ok = "yes"; then
+ GPGME_CFLAGS=`$GPGME_CONFIG --cflags`
+ GPGME_LIBS=`$GPGME_CONFIG --libs`
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_GPGME, 1, [Define if you want GPG support])
+ else
+ AC_MSG_ERROR(GPGME $min_gpgme_version or later needed)
+ fi
+fi
+
+AC_SUBST(GPGME_CFLAGS)
+AC_SUBST(GPGME_LIBS)
+