Maybe the actual failure is that it should be -Wl,-R/usr/X11R7/lib ? That
seems done one the same line with "-Wl,-R/usr/pkg/lib".

On the other hand, some dumb questions: Which linker is used? Does it
support -R? Does /usr/X11R7/lib exist?

Does LD_LIBRARY_PATH help? If so, you could perhaps add /usr/X11R7/lib to
global search path in /etc/ld.so.conf or /etc/ld.so.conf.d? (This affects
everything on the system, but maybe that's good enough?)

On Sat, Aug 5, 2017 at 10:26 AM, Riccardo Mottola <
riccardo.mott...@libero.it> wrote:

> Hi,
>
> on a NetBSD system where I extra use clang instead of standard gcc, I have
> issues building back.
> In specific, I noticed when building the xlib backend, but the issue is
> generic, but I did not notice with cairo because it does not link directly
> to certain X libraries, so it went unnoticed.
>
> To run sucessfully, I need this
> -Wl,-R/usr/X11R7/lib
>
> so that e.g. Xcursor and other libraries gets found on runtime.
>
> However our configure file generates in config.make this:
>
> GRAPHIC_LIBS=-L/usr/pkg/lib -Wl,-R/usr/pkg/lib -lXft  -lfontconfig
> -L/usr/X11R7/lib -lXcursor -lXfixes -lXmu -lXt -lXext -lX11   -lGL
> GRAPHIC_CFLAGS=-D_REENTRANT -I/usr/pkg/include
> -I/usr/X11R7/include/freetype2 -I/usr/X11R7/include
> -I/usr/pkg/include/freetype2 -I/usr/X11R7/include -I/usr/X11R7/include
> GRAPHIC_LFLAGS=
> X_PRE_LIBS= -lSM -lICE
>
> everything compiles and links, but on run I get unresolved shared objects
> which are in /usr/X11R7/lib
>
> This is all done in configure, but where?
>
> One explanation I found is that it is done automatically and that the
> configure check is bad.
> I found this in config.log:
>
> configure:3659: checking for X
> configure:3848: result: libraries /usr/X11R7/lib, headers
> /usr/X11R7/include
> configure:3868: checking whether -R must be followed by a space
> configure:3884: clang -o conftest -g -O2  -I/System/Library/Headers
> -I/usr/pkg/include  -L/System/Library/Libraries/gnu-gnu-gn
> u -L/System/Library/Libraries -Wl,-R/usr/pkg/lib -L/usr/pkg/lib
> conftest.c  -R/usr/X11R7/lib >&5
> clang: warning: argument unused during compilation: '-R/usr/X11R7/lib'
> configure:3884: $? = 0
>
> then this is used:
>
> configure:3901: clang -o conftest -g -O2  -I/System/Library/Headers
> -I/usr/pkg/include  -L/System/Library/Libraries/gnu-gnu-gn
> u -L/System/Library/Libraries -Wl,-R/usr/pkg/lib -L/usr/pkg/lib
> conftest.c  -R /usr/X11R7/lib >&5
> clang: warning: argument unused during compilation: '-R'
> /usr/X11R7/lib: file not recognized: File format not recognized
> clang: error: linker command failed with exit code 1 (use -v to see
> invocation)
>
> the warning is interpreted as failure, the error too and so neither option
> is added.
>
> This is actually a linker directive passed to through the compiler, right?
>
> The check itself is apparently useless for us, since only certain
> compilers require a space after -R (cited is Sun) and since we require
> Objective-C, to my knowledge we can use only clang or gcc as of now (and
> the past 15 years?)
>
> Riccardo
>
> _______________________________________________
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>
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