[patch #8585] ax_pthread and different CFLAGS and LDFLAGS

Follow-up Comment #3, patch #8585 (project autoconf-archive):

Hi,

no problem for the delay. Thank you for your work!

I have replaced our (Bitcoin Core) copy of ax_pthread.m4 with draft3.

configure output changes (diff against our master):

-checking if compiler needs -Werror to reject unknown flags... yes
-checking whether pthreads work with -pthread... yes
+checking whether gcc is Clang... yes
+checking whether Clang needs flag to prevent "argument unused" warning when
linking with -pthread... -Qunused-arguments
 checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE
-checking if more special flags are required for pthreads... -D_THREAD_SAFE
+checking whether more special flags are required for pthreads... no

Ie. expected.

The build finished without issues on OS X without these messages:

-clang: warning: argument unused during compilation: '-pthread'
-clang: warning: argument unused during compilation: '-pie'
-clang: warning: argument unused during compilation: '-pthread'

Ie. it works perfectly for our case.

Thank you!


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