Duncan Coutts wrote:
On Sun, 2006-07-30 at 11:53 +0100, Brian Hulley wrote:
p.tanski@gmail.com wrote:
GHC Task Ticket # 601 suggests replacing GMP with OpenSSL's Bignum library, BN. I have two questions concerning this:
From the ticket, this looks very scary:
but its LGPL license is problematic for users of GHC (it prohibits static linking of GHC-compiled programs, for example).
Does this mean I can't distribute my Haskell app as a commercial application? I certainly don't want to distribute source code and I've got no idea how to compile a Haskell app other than using ghc --make, which creates a single exe ie with static linkage.
GHC only statically links Haskell code. It dynamically links to GMP and the system C library and other C libs.
So you're fine.
On unix you can check for yourself with ldd. It lists all the shared libs that your program needs. For example:
$ ldd /usr/lib/ghc-6.4.2/ghc-6.4.2 libreadline.so.5 => /lib/libreadline.so.5 (0x00002b568fca6000) libncurses.so.5 => /lib/libncurses.so.5 (0x00002b568fde3000) libdl.so.2 => /lib/libdl.so.2 (0x00002b568ff3f000) libm.so.6 => /lib/libm.so.6 (0x00002b5690042000) libgmp.so.3 => /usr/lib/libgmp.so.3 (0x00002b569019a000) libpthread.so.0 => /lib/libpthread.so.0 (0x00002b56902cf000) libc.so.6 => /lib/libc.so.6 (0x00002b56903e4000) /lib64/ld-linux-x86-64.so.2 (0x00002b568fb8e000)
Is this also true on Windows? I've got a feeling that it's not because my program (ie main.exe + my own C++ DLL) runs on a plain WindowsXP installation that doesn't have anything else installed on it (apart from the Microsoft C runtime that comes as standard and which presumably doesn't contain GMP). Thanks, Brian. -- Logic empowers us and Love gives us purpose. Yet still phantoms restless for eras long past, congealed in the present in unthought forms, strive mightily unseen to destroy us. http://www.metamilk.com