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digitalmars.D.bugs - [Issue 4642] New: DMD should have a command-line option to ignore pragma(lib, ...)

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4642

           Summary: DMD should have a command-line option to ignore
                    pragma(lib, ...)
           Product: D
           Version: D1 & D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: llucax gmail.com



PDT ---
I think is important to have an option to ignore pragma(lib, ..), because even
when is not very common, users might want to link against an specific custom
library name.

For example in Debian sometimes there are packages for the same library but
configured in different ways, like libcurl and libcurl-gnutls.

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next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4642


Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla digitalmars.com



18:48:04 PDT ---
http://www.digitalmars.com/ctg/ctgLinkSwitches.html#defaultlibrarysearch

for dmd:  -L/nodefaultlibrarysearch

for non-Windows builds, it isn't an issue because the object file format does
not have a field type for libraries.

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prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4642


Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID


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prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=4642


Leandro Lucarella <llucax gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|INVALID                     |



PDT ---


 http://www.digitalmars.com/ctg/ctgLinkSwitches.html#defaultlibrarysearch
 
 for dmd:  -L/nodefaultlibrarysearch
 
 for non-Windows builds, it isn't an issue because the object file format does
 not have a field type for libraries.


I don't use Windows, so I don't know the details about it, but I can't
understand what you mean for non-Windows either.

The point is, if a library have a:

pragma (lib, "curl");

And I want to use libcurl-gnutls instead, I can't without modifying the source.
Even more, if I don't even have the non-gnutls curl installed, I can't even
compile.

For example:

p.d
---
import l;
void main() {}
---

l.d
---
pragma (lib, "curl");
---

$ dmd -v /tmp/p.d /tmp/l.d -of/tmp/p | grep curl
library   curl
gcc /tmp/p.o -o /tmp/p -m32 -Xlinker -L../lib -lcurl -lphobos -lpthread -lm 
/usr/bin/ld: skipping incompatible
/usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../libcurl.so when searching for
-lcurl
/usr/bin/ld: skipping incompatible
/usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../libcurl.a when searching for
-lcurl
/usr/bin/ld: skipping incompatible //usr/lib/libcurl.so when searching for
-lcurl
/usr/bin/ld: skipping incompatible //usr/lib/libcurl.a when searching for
-lcurl
/usr/bin/ld: cannot find -lcurl
collect2: ld returned 1 exit status

DMD adds the -lcurl and AFAIK, I can't change that without modifying the source
of l.d (which might not be under my control, it could be a system-wide header
for which I have no write-access, of course I could copy and modify it but I
hope we agree that is less than ideal).

Is there any way to avoid that problem right now?

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