• eles (26/26) Sep 18 2013 Hi,
• eles (17/20) Sep 18 2013 Related, why the scons is passing the -L/usr/lib to the gcc,

"eles" <eles eles.com> writes:

Hi,

   Not sure it is a bug or a misuse of scons, but on Saucy 64, with

scons --version

	script: v2.3.0, 2013/03/03 09:48:35, by garyo on reepicheep
	engine: v2.3.0, 2013/03/03 09:48:35, by garyo on reepicheep

   and a simple SConstruct like:

import os
env = Environment(ENV = os.environ)

env.Program(target='test01', source=Split('test01.d'));

it tries to execute:

scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
gcc -o test01 -m32 test01.o -L/usr/lib -lphobos2 -lpthread -lm
/usr/bin/ld: cannot find -lphobos2
collect2: error: ld returned 1 exit status
scons: *** [test01] Error 1
scons: building terminated because of errors.

which is expected to fail since:

1) the architecture (and the libraries) are m64, not m32 (why
does scons believe that?)

2) the gdc's phobos libraries is called libgphobos2, not
libphobos2

Manually correcting and executing the offending line:

gcc -o test01 -m64 test01.o -L/usr/lib -lgphobos2 -lpthread -lm

works as expected.

"eles" <eles eles.com> writes:

On Wednesday, 18 September 2013 at 07:09:27 UTC, eles wrote:
 import os
 env = Environment(ENV = os.environ)

 gcc -o test01 -m32 test01.o -L/usr/lib -lphobos2 -lpthread -lm

Related, why the scons is passing the -L/usr/lib to the gcc,
while the LD_LIBRARY_PATH variable of my bash shell is rather:

/opt/gdc-4.9/lib/../lib64

This provides a bad version of lib(g)phobos.a.

The verbose invocation of gcc (no -L parameter), that is:

gcc -v -o test01 -m64 test01.o -lgphobos2 -lpthread -lm

correctly specifies:

LIBRARY_PATH=/opt/gdc-4.9/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/:/opt/gdc-4.9/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../lib64/:/lib/x86_64-linux-gnu/:/lib/../lib64/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib64/:/opt/gdc-4.9/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../:/lib/:/usr/lib/

and finds the libgphobos.a from:

/opt/gdc-4.9/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../lib64/

which, indeed, is the correct version.

Note that I have two installations of gdc, but the PATH of
/opt/gdc-4.9/bin preceded the /usr/bin:

$ which -a gcc
/opt/gdc-4.9/bin/gcc
/usr/bin/gcc