Bug#697755: llvm-3.2: Please, cleanup compilation flags reported by llvm-config

[Vincent Danjean]

Package: llvm-3.2
Version: 3.2-2
Severity: normal

  Hi,

  LLVM documentation report that:
"llvm-config makes it easier to build applications that use LLVM. It can print 
the compiler flags, linker flags and object libraries needed to link against LLVM."
http://llvm.org/docs/CommandGuide/llvm-config.html

  However, "llvm-config-3.2 --ldflags" reports
-L/usr/lib/llvm-3.2/lib  -lpthread -lffi -ldl -lm 

  I think that these options are required when doing *static* linkage
(and note that all "-lXXX" are not flags but libs...)
  However, Debian provides and encourages the use of shared libraries.
In this case, I do not see the interest to link any application or
library to pthread, ffi, dl and m libraries directly if they do not
use there symbols.

  llvm-config should probably have another option (--static) to request
information about static linkage and default to dynamic linkage.
  Another possibility is to provide a llvm-3.2.pc file that correctly
describe compilation options required when building and linking code
with llvm.

  Regards,
    Vincent

-- System Information:
Debian Release: 7.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386 armel mipsel

Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages llvm-3.2 depends on:
ii  libc6             2.13-37
ii  libffi5           3.0.10-3
ii  libgcc1           1:4.7.2-4
ii  libllvm3.2        3.2-2
ii  libstdc++6        4.7.2-4
ii  llvm-3.2-runtime  3.2-2

Versions of packages llvm-3.2 recommends:
ii  llvm-3.2-dev  3.2-2

Versions of packages llvm-3.2 suggests:
pn  llvm-3.2-doc  <none>

-- no debconf information