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Subject: Re: gcc x86 - problem on library search order
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References: <da8b5c9e-0cfb-9078-7e6c-eddd7934b029 AT gmail DOT com> <571F400F DOT 3000306 AT gmail DOT com>
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID: <0b805922-5ba8-41e5-0736-90456b9902e2@gmail.com>
Date: Tue, 26 Apr 2016 14:10:57 +0200
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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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