tjh.dev
1{
2 fetchurl,
3 stdenv,
4 lib,
5 updateAutotoolsGnuConfigScriptsHook,
6 enableStatic ? stdenv.hostPlatform.isStatic,
7 enableShared ? !stdenv.hostPlatform.isStatic,
8 enableDarwinABICompat ? false,
9}:
10
11# assert !stdenv.hostPlatform.isLinux || stdenv.hostPlatform != stdenv.buildPlatform; # TODO: improve on cross
12
13stdenv.mkDerivation rec {
14 pname = "libiconv";
15 version = "1.17";
16
17 src = fetchurl {
18 url = "mirror://gnu/libiconv/${pname}-${version}.tar.gz";
19 sha256 = "sha256-j3QhO1YjjIWlClMp934GGYdx5w3Zpzl3n0wC9l2XExM=";
20 };
21
22 enableParallelBuilding = true;
23
24 # necessary to build on FreeBSD native pending inclusion of
25 # https://git.savannah.gnu.org/cgit/config.git/commit/?id=e4786449e1c26716e3f9ea182caf472e4dbc96e0
26 nativeBuildInputs = [ updateAutotoolsGnuConfigScriptsHook ];
27
28 # https://github.com/NixOS/nixpkgs/pull/192630#discussion_r978985593
29 hardeningDisable = lib.optional (stdenv.hostPlatform.libc == "bionic") "fortify";
30
31 setupHooks = [
32 ../../../build-support/setup-hooks/role.bash
33 ./setup-hook.sh
34 ];
35
36 postPatch =
37 lib.optionalString
38 (
39 (stdenv.hostPlatform != stdenv.buildPlatform && stdenv.hostPlatform.isMinGW) || stdenv.cc.nativeLibc
40 )
41 ''
42 sed '/^_GL_WARN_ON_USE (gets/d' -i srclib/stdio.in.h
43 ''
44 + lib.optionalString (!enableShared) ''
45 sed -i -e '/preload/d' Makefile.in
46 ''
47 # The system libiconv is based on libiconv 1.11 with some ABI differences. The following changes
48 # build a compatible libiconv on Darwin, allowing it to be sustituted in place of the system one
49 # using `install_name_tool`. This removes the need to for a separate, Darwin-specific libiconv
50 # derivation and allows Darwin to benefit from upstream updates and fixes.
51 + lib.optionalString enableDarwinABICompat ''
52 for iconv_h_in in iconv.h.in iconv.h.build.in; do
53 substituteInPlace "include/$iconv_h_in" \
54 --replace-fail "#define iconv libiconv" "" \
55 --replace-fail "#define iconv_close libiconv_close" "" \
56 --replace-fail "#define iconv_open libiconv_open" "" \
57 --replace-fail "#define iconv_open_into libiconv_open_into" "" \
58 --replace-fail "#define iconvctl libiconvctl" "" \
59 --replace-fail "#define iconvlist libiconvlist" ""
60 done
61 '';
62
63 # This is hacky, but `libiconv.dylib` needs to reexport `libcharset.dylib` to match the behavior
64 # of the system libiconv on Darwin. Trying to do this by modifying the `Makefile` results in an
65 # error linking `iconv` because `libcharset.dylib` is not at its final path yet. Avoid the error
66 # by building without the reexport then clean and rebuild `libiconv.dylib` with the reexport.
67 #
68 # For an explanation why `libcharset.dylib` is reexported, see:
69 # https://github.com/apple-oss-distributions/libiconv/blob/a167071feb7a83a01b27ec8d238590c14eb6faff/xcodeconfig/libiconv.xcconfig
70 postBuild = lib.optionalString enableDarwinABICompat ''
71 make clean -C lib
72 NIX_CFLAGS_COMPILE+=" -Wl,-reexport-lcharset -L. " make -C lib -j$NIX_BUILD_CORES SHELL=$SHELL
73 '';
74
75 configureFlags = [
76 (lib.enableFeature enableStatic "static")
77 (lib.enableFeature enableShared "shared")
78 ]
79 ++ lib.optional stdenv.hostPlatform.isFreeBSD "--with-pic";
80
81 passthru = { inherit setupHooks; };
82
83 meta = {
84 description = "Iconv(3) implementation";
85
86 longDescription = ''
87 Some programs, like mailers and web browsers, must be able to convert
88 between a given text encoding and the user's encoding. Other programs
89 internally store strings in Unicode, to facilitate internal processing,
90 and need to convert between internal string representation (Unicode)
91 and external string representation (a traditional encoding) when they
92 are doing I/O. GNU libiconv is a conversion library for both kinds of
93 applications.
94 '';
95
96 homepage = "https://www.gnu.org/software/libiconv/";
97 license = lib.licenses.lgpl2Plus;
98
99 maintainers = [ ];
100 mainProgram = "iconv";
101
102 # This library is not needed on GNU platforms.
103 hydraPlatforms = with lib.platforms; cygwin ++ darwin ++ freebsd;
104 };
105}