error linking uWSGI

Question

i'm trying to compile uwsgi from pip on rhel6, but i get a linking error: can someone help please?

$ sudo /usr/bin/pip  install uwsgi
...
*** uWSGI linking ***

gcc -pthread -o /usr/bin/uwsgi -L/usr/lib64 core/utils.o core/protocol.o core/socket.o core/logging.o core/master.o core/master_utils.o core/emperor.o core/notify.o core/mule.o core/subscription.o core/stats.o core/sendfile.o core/async.o core/master_checks.o core/fifo.o core/offload.o core/io.o core/static.o core/websockets.o core/spooler.o core/snmp.o core/exceptions.o core/config.o core/setup_utils.o core/clock.o core/init.o core/buffer.o core/reader.o core/writer.o core/alarm.o core/cron.o core/hooks.o core/plugins.o core/lock.o core/cache.o core/daemons.o core/errors.o core/hash.o core/master_events.o core/chunked.o core/queue.o core/event.o core/signal.o core/strings.o core/progress.o core/timebomb.o core/ini.o core/fsmon.o core/mount.o core/metrics.o/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../libz.so when searching for -lz

/usr/bin/ld: skipping incompatible /usr/lib/libz.so when searching for -lz

/usr/bin/ld: cannot find -lz

collect2: ld returned 1 exit status

 core/plugins_builder.o core/sharedarea.o core/rpc.o core/gateway.o core/loop.o core/cookie.o core/querystring.o core/rb_timers.o core/transformations.o core/uwsgi.o proto/base.o proto/uwsgi.o proto/http.o proto/fastcgi.o proto/scgi.o proto/puwsgi.o lib/linux_ns.o core/zlib.o core/yaml.o core/dot_h.o core/config_py.o plugins/python/python_plugin.o plugins/python/pyutils.o plugins/python/pyloader.o plugins/python/wsgi_handlers.o plugins/python/wsgi_headers.o plugins/python/wsgi_subhandler.o plugins/python/web3_subhandler.o plugins/python/pump_subhandler.o plugins/python/gil.o plugins/python/uwsgi_pymodule.o plugins/python/profiler.o plugins/python/symimporter.o plugins/python/tracebacker.o plugins/python/raw.o plugins/gevent/gevent.o plugins/gevent/hooks.o plugins/ping/ping_plugin.o plugins/cache/cache.o plugins/nagios/nagios.o plugins/rrdtool/rrdtool.o plugins/carbon/carbon.o plugins/rpc/rpc_plugin.o plugins/corerouter/cr_common.o plugins/corerouter/cr_map.o plugins/corerouter/corerouter.o plugins/fastrouter/fastrouter.o plugins/http/http.o plugins/http/keepalive.o plugins/http/https.o plugins/http/spdy3.o plugins/ugreen/ugreen.o plugins/signal/signal_plugin.o plugins/syslog/syslog_plugin.o plugins/rsyslog/rsyslog_plugin.o plugins/logsocket/logsocket_plugin.o plugins/router_uwsgi/router_uwsgi.o plugins/router_redirect/router_redirect.o plugins/router_basicauth/router_basicauth.o plugins/zergpool/zergpool.o plugins/redislog/redislog_plugin.o plugins/mongodblog/mongodblog_plugin.o plugins/router_rewrite/router_rewrite.o plugins/router_http/router_http.o plugins/logfile/logfile.o plugins/router_cache/router_cache.o plugins/rawrouter/rawrouter.o plugins/router_static/router_static.o plugins/sslrouter/sslrouter.o plugins/spooler/spooler_plugin.o plugins/cheaper_busyness/cheaper_busyness.o plugins/symcall/symcall_plugin.o plugins/transformation_tofile/tofile.o plugins/transformation_gzip/gzip.o plugins/transformation_chunked/chunked.o plugins/transformation_offload/offload.o plugins/router_memcached/router_memcached.o plugins/router_redis/router_redis.o plugins/router_hash/router_hash.o plugins/router_expires/expires.o plugins/router_metrics/plugin.o plugins/transformation_template/tt.o plugins/stats_pusher_socket/plugin.o -lpthread -lm -rdynamic -ldl -lz -lpthread -ldl -lutil -lm -lpython2.6 -lcrypt

*** error linking uWSGI ***

Answer 1

A big red error warning, the main error content is:

error: lto-wrapper failed 

collect2: error: ld returned 1 exit status

The reason behind it is that the version of gcc is high. Here is the fix:

ls /usr/bin/gcc* -l 

sudo apt-get  install gcc-4.8

sudo rm /usr/bin/gcc

sudo ln -s /usr/bin/gcc-4.8 /usr/bin/gcc

Hope this helps!

Answer 2

This is because of the profile override set to false.

Use the following code.

 sudo CFLAGS="-I/usr/local/opt/openssl/include" LDFLAGS="-L/usr/local/opt/openssl/lib" UWSGI_PROFILE_OVERRIDE=ssl=true pip install uwsgi -Iv