| From: | Max Filippov <jcmvbkbc(at)gmail(dot)com> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org, Peter Seiderer <ps(dot)report(at)gmx(dot)net> |
| Subject: | Re: configure can't detect proper pthread flags |
| Date: | 2015-03-20 02:15:51 |
| Message-ID: | CAMo8BfL68KH4OafYPxyQH=7pnf9XVff6bXDABqBN_N47T3Nj1A@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Mar 20, 2015 at 5:09 AM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> 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.
Sorry, I must be not clear enough: why checking compiler/linker output
instead of checking their exit code or presence of produced object/
executable files?
--
Thanks.
-- Max
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