* gcc x86 - problem on library search order
@ 2016-04-25 19:34 Marco Atzeri
2016-04-26 12:11 ` JonY
0 siblings, 1 reply; 4+ messages in thread
From: Marco Atzeri @ 2016-04-25 19:34 UTC (permalink / raw)
To: cygwin
Visible on 32bit and not present on 64bit
$ cat uuid.c
#include <uuid/uuid.h>
int main ()
{
uuid_t out;
uuid_generate_random(out);
return 0;
}
$ gcc uuid.c -luuid
/tmp/ccLlmFMf.o:uuid.c:(.text+0x16): undefined reference to
`uuid_generate_random'
collect2: error: ld returned 1 exit status
$ gcc uuid.c -luuid -L /usr/lib
The problem seems "/usr/lib/w32api" searched
before "/usr/lib"
$ cygcheck -l w32api-runtime |grep libuuid.
/usr/lib/w32api/libuuid.a
$ cygcheck -l libuuid-devel |grep libuuid.dll
/usr/lib/libuuid.dll.a
$ cygcheck -c gcc-core
Cygwin Package Information
Package Version Status
gcc-core 5.3.0-4 OK
Marco
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* Re: gcc x86 - problem on library search order
2016-04-25 19:34 gcc x86 - problem on library search order Marco Atzeri
@ 2016-04-26 12:11 ` JonY
2016-04-26 13:54 ` Marco Atzeri
0 siblings, 1 reply; 4+ messages in thread
From: JonY @ 2016-04-26 12:11 UTC (permalink / raw)
To: cygwin
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On 4/26/2016 01:46, Marco Atzeri wrote:
> Visible on 32bit and not present on 64bit
>
> $ cat uuid.c
> #include <uuid/uuid.h>
>
> int main ()
> {
> uuid_t out;
> uuid_generate_random(out);
> return 0;
> }
>
>
> $ gcc uuid.c -luuid
> /tmp/ccLlmFMf.o:uuid.c:(.text+0x16): undefined reference to
> `uuid_generate_random'
> collect2: error: ld returned 1 exit status
>
Pretty sure I removed the patch that does that, not sure where it gets
in from. It isn't in the specs file either.
-Wl,-v does say it is from gcc.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: gcc x86 - problem on library search order
2016-04-26 12:11 ` JonY
@ 2016-04-26 13:54 ` Marco Atzeri
2016-04-26 17:29 ` JonY
0 siblings, 1 reply; 4+ messages in thread
From: Marco Atzeri @ 2016-04-26 13:54 UTC (permalink / raw)
To: cygwin
On 26/04/2016 12:16, JonY wrote:
> On 4/26/2016 01:46, Marco Atzeri wrote:
>> Visible on 32bit and not present on 64bit
>>
>> $ cat uuid.c
>> #include <uuid/uuid.h>
>>
>> int main ()
>> {
>> uuid_t out;
>> uuid_generate_random(out);
>> return 0;
>> }
>>
>>
>> $ gcc uuid.c -luuid
>> /tmp/ccLlmFMf.o:uuid.c:(.text+0x16): undefined reference to
>> `uuid_generate_random'
>> collect2: error: ld returned 1 exit status
>>
>
> Pretty sure I removed the patch that does that, not sure where it gets
> in from. It isn't in the specs file either.
>
> -Wl,-v does say it is from gcc.
may be from "COLLECT_GCC_OPTION" as "LIBRARY_PATH" has the right order
LIBRARY_PATH=/usr/lib/gcc/i686-pc-cygwin/5.3.0/:/usr/lib/gcc/i686-pc-cygwin/5.3.0/../../../../i686-pc-cygwin/lib/:/usr/lib/:/lib/:/usr/lib/w32api/
COLLECT_GCC_OPTIONS='-v' '-mtune=generic' '-march=i686'
/usr/lib/gcc/i686-pc-cygwin/5.3.0/collect2.exe -plugin
/usr/lib/gcc/i686-pc-cygwin/5.3.0/cyglto_plugin.dll
-plugin-opt=/usr/lib/gcc/i686-pc-cygwin/5.3.0/lto-wrapper.exe
-plugin-opt=-fresolution=/tmp/ccqHx4mQ.res
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lcygwin -plugin-opt=-pass-through=-ladvapi32
-plugin-opt=-pass-through=-lshell32 -plugin-opt=-pass-through=-luser32
-plugin-opt=-pass-through=-lkernel32 -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc --build-id --wrap _Znwj --wrap _Znaj
--wrap _ZdlPv --wrap _ZdaPv --wrap _ZnwjRKSt9nothrow_t --wrap
_ZnajRKSt9nothrow_t --wrap _ZdlPvRKSt9nothrow_t --wrap
_ZdaPvRKSt9nothrow_t -Bdynamic --dll-search-prefix=cyg
--large-address-aware --tsaware /usr/lib/crt0.o
/usr/lib/gcc/i686-pc-cygwin/5.3.0/crtbegin.o
-L/usr/lib/gcc/i686-pc-cygwin/5.3.0
-L/usr/lib/gcc/i686-pc-cygwin/5.3.0/../../../../i686-pc-cygwin/lib
-L/usr/lib/w32api /tmp/ccHGOCXX.o -luuid -lgcc_s -lgcc -lcygwin
-ladvapi32 -lshell32 -luser32 -lkernel32 -lgcc_s -lgcc
/usr/lib/default-manifest.o /usr/lib/gcc/i686-pc-cygwin/5.3.0/crtend.o
/tmp/ccHGOCXX.o:uuid.c:(.text+0x16): undefined reference to
`uuid_generate_random'
collect2: error: ld returned 1 exit status
--
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Documentation: http://cygwin.com/docs.html
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: gcc x86 - problem on library search order
2016-04-26 13:54 ` Marco Atzeri
@ 2016-04-26 17:29 ` JonY
0 siblings, 0 replies; 4+ messages in thread
From: JonY @ 2016-04-26 17:29 UTC (permalink / raw)
To: cygwin
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On 4/26/2016 20:10, Marco Atzeri wrote:
>
>
> On 26/04/2016 12:16, JonY wrote:
>> On 4/26/2016 01:46, Marco Atzeri wrote:
>>> Visible on 32bit and not present on 64bit
>>>
>>> $ cat uuid.c
>>> #include <uuid/uuid.h>
>>>
>>> int main ()
>>> {
>>> uuid_t out;
>>> uuid_generate_random(out);
>>> return 0;
>>> }
>>>
>>>
>>> $ gcc uuid.c -luuid
>>> /tmp/ccLlmFMf.o:uuid.c:(.text+0x16): undefined reference to
>>> `uuid_generate_random'
>>> collect2: error: ld returned 1 exit status
>>>
>>
>> Pretty sure I removed the patch that does that, not sure where it gets
>> in from. It isn't in the specs file either.
>>
>> -Wl,-v does say it is from gcc.
>
> may be from "COLLECT_GCC_OPTION" as "LIBRARY_PATH" has the right order
>
> LIBRARY_PATH=/usr/lib/gcc/i686-pc-cygwin/5.3.0/:/usr/lib/gcc/i686-pc-cygwin/5.3.0/../../../../i686-pc-cygwin/lib/:/usr/lib/:/lib/:/usr/lib/w32api/
>
In -Wl,-v, looks like 64bit gcc too has -L/usr/lib/w32api, however, it
is "-L/usr/lib/../lib -L/lib/../lib
-L/usr/lib/gcc/x86_64-pc-cygwin/5.3.0/../../../../x86_64-pc-cygwin/lib
-L/usr/lib/w32api", so it comes out correct eventually. The 32bit
version is lacking that.
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2016-04-25 19:34 gcc x86 - problem on library search order Marco Atzeri
2016-04-26 12:11 ` JonY
2016-04-26 13:54 ` Marco Atzeri
2016-04-26 17:29 ` JonY
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