nixpkgs/pkgs/development/interpreters/perl-5.10/default.nix
Peter Simons 1e575d3572 perl-5.8 and perl-5.10: fixed build on MacOS X
On MacOS X, we used to use the native perl interpreter from /usr/bin.
Unfortunately, that interpreter fails to build a number of packages
(Subversion, Git, etc. ...), because it assumes knowledge about the
underlying C compiler that is not valid for the compiler used by Nix.
For example, /usr/bin/perl assumes that the compiler can build binaries
for both the ppc and the x86 architecture. /usr/bin/gcc can do that, but
the gcc from Nix can't.

The solution is to compile Perl 5.10 in Nix so that the ./configure
phase can properly detect the system's capabilities. However, note that
the resulting binary is impure: it will find headers in /usr/include and
libraries in /usr/lib. In this respect, the Nix-compiled perl binary is
no different than the native one in /usr/bin -- it's just configured
more accurately.

svn path=/nixpkgs/trunk/; revision=17870
2009-10-19 09:17:10 +00:00

54 lines
1.8 KiB
Nix

{ stdenv, fetchurl
, impureLibcPath ? null
}:
stdenv.mkDerivation {
name = "perl-5.10.0";
src = fetchurl {
url = mirror://cpan/src/perl-5.10.0.tar.gz;
sha256 = "0bivbz15x02m02gqs6hs77cgjr2msfrhnvp5xqk359jg6w6llill";
};
patches = [
# This patch does the following:
# 1) Do use the PATH environment variable to find the `pwd' command.
# By default, Perl will only look for it in /lib and /usr/lib.
# !!! what are the security implications of this?
# 2) Force the use of <errno.h>, not /usr/include/errno.h, on Linux
# systems. (This actually appears to be due to a bug in Perl.)
./no-sys-dirs.patch
];
# Build a thread-safe Perl with a dynamic libperls.o. We need the
# "installstyle" option to ensure that modules are put under
# $out/lib/perl5 - this is the general default, but because $out
# contains the string "perl", Configure would select $out/lib.
configureFlags = ''
-de -Dcc=gcc -Uinstallusrbinperl -Dinstallstyle=lib/perl5 -Duseshrplib
${if stdenv ? glibc then "-Dusethreads" else ""}
'';
configureScript = "${stdenv.shell} ./Configure";
dontAddPrefix = true;
preConfigure =
''
configureFlags="$configureFlags -Dprefix=$out -Dman1dir=$out/share/man/man1 -Dman3dir=$out/share/man/man3"
if test "${if impureLibcPath == null then "$NIX_ENFORCE_PURITY" else "1"}" = "1"; then
GLIBC=${if impureLibcPath == null then "$(cat $NIX_GCC/nix-support/orig-libc)" else impureLibcPath}
configureFlags="$configureFlags -Dlocincpth=$GLIBC/include -Dloclibpth=$GLIBC/lib"
fi
'';
preBuild =
''
# Make Cwd work on NixOS (where we don't have a /bin/pwd).
${if stdenv.system == "i686-darwin" then "" else "substituteInPlace lib/Cwd.pm --replace \"'/bin/pwd'\" \"'$(type -tP pwd)'\""}
'';
setupHook = ./setup-hook.sh;
}