Re: configure can't detect proper pthread flags

On Fri, Mar 20, 2015 at 04:51:55AM +0300, Max Filippov wrote:
> xtensa-linux-gcc -o conftest -Wall -Wmissing-prototypes
> -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels
> -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing
> -fwrapv -fexcess-precision=standard -D_LARGEFILE_SOURCE
> -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -mlongcalls
> -mtext-section-literals -Os -pthread -D_LARGEFILE_SOURCE
> -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE conftest.c
> -lssl -lcrypto -lz -lreadline -lrt -lcrypt -ldl -lm
> 
> and if I drop irrelevant libraries from that command its stdout+stderr
> will probably be empty.
> 
> But I was curious why this test is written *that* way.

Threading compiles are different for every platform so the code just
tries everything --- we didn't anticipate that adding a useless library
would actually cause a failure.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + Everyone has their own god. +