package/gesftpserver: fix build without Python

The build of gesftserver in an environment without Python fails with:

checking for Python 2.4 or better... configure: error: cannot find Python 2.4 or better

However, it turns out that Python is only needed for tests, which we
don't run/use in Buildroot, so we can safely build gesftpserver
without Python.

Signed-off-by: Andreas Naumann <anaumann@ultratronik.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 422fd73fadfbe33523e1687f90bbfecd3f7ab5d5)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gesftpserver/gesftpserver.mk

@@ -23,6 +23,10 @@ GESFTPSERVER_DEPENDENCIES += \
 	$(if $(BR2_ENABLE_LOCALE),,libiconv) \
 	$(if $(BR2_PACKAGE_OPENSSH),openssh)
 
+# Python on the host is only used for tests, which we don't use in
+# Buildroot
+GESFTPSERVER_CONF_ENV += rjk_cv_python24=false
+
 # openssh/dropbear looks here
 define GESFTPSERVER_ADD_SYMLINK
 	ln -sf gesftpserver $(TARGET_DIR)/usr/libexec/sftp-server