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2025-10-09 14:15:47 +02:00
{
lib,
atf,
gperf,
mkAppleDerivation,
pkg-config,
stdenv,
}:
let
inherit (stdenv) hostPlatform;
in
mkAppleDerivation (finalAttrs: {
releaseName = "libiconv";
outputs = [
"out"
"dev"
];
xcodeHash = "sha256-IiTqhEJIZ8JYjlpBS7ITwYlp8ndU6cehus9TIr+5LYM=";
patches = [
# Use gperf to implement module loading statically by looking up the module functions in the static binary.
./patches/0001-Support-static-module-loading.patch
# Avoid out of bounds write with ISO-2022
./patches/0002-Fix-ISO-2022-out-of-bounds-write-with-encoded-charac.patch
];
# Propagate `out` only when there are dylibs to link (i.e., dont propagate when doing a static build).
propagatedBuildOutputs = lib.optionalString (!hostPlatform.isStatic) "out";
postPatch = ''
# Work around unnecessary private API usage in libcharset.
mkdir -p libcharset/os && cat <<EOF > libcharset/os/variant_private.h
#pragma once
#include <stdbool.h>
static inline bool os_variant_has_internal_content(const char*) { return false; }
EOF
# Add additional test cases found while working on packaging libiconv in nixpkgs.
cp ${./nixpkgs_test.c} tests/libiconv/nixpkgs_test.c
''
+ lib.optionalString hostPlatform.isStatic ''
cp ${./static-modules.gperf} static-modules.gperf
'';
# Dynamic builds use `dlopen` to load modules, but static builds have to link them all.
# `gperf` is used to generate a lookup table from module to ops functions.
nativeBuildInputs = lib.optionals hostPlatform.isStatic [ gperf ];
mesonFlags = [ (lib.mesonBool "tests" finalAttrs.finalPackage.doInstallCheck) ];
postBuild =
# Add `libcharset.a` contents to `libiconv.a` to duplicate the reexport from `libiconv.dylib`.
lib.optionalString hostPlatform.isStatic ''
${stdenv.cc.targetPrefix}ar qL libiconv.a libcharset.a
'';
postInstall =
lib.optionalString (hostPlatform.isDarwin && !hostPlatform.isStatic) ''
${stdenv.cc.targetPrefix}install_name_tool "$out/lib/libiconv.2.dylib" \
-change '@rpath/libcharset.1.dylib' "$out/lib/libcharset.1.dylib"
''
# Move the static library to the `dev` output
+ lib.optionalString hostPlatform.isStatic ''
moveToOutput lib "$dev"
'';
# Tests have to be run in `installCheckPhase` because libiconv expects to `dlopen`
# modules from `$out/lib/i18n`.
nativeInstallCheckInputs = [ pkg-config ];
installCheckInputs = [ atf ];
doInstallCheck = stdenv.buildPlatform.canExecute hostPlatform;
# Cant use `mesonCheckPhase` because it runs the wrong hooks for `installCheckPhase`.
installCheckPhase = ''
runHook preInstallCheck
meson test --no-rebuild --print-errorlogs --timeout-multiplier=0
runHook postInstallCheck
'';
meta = {
description = "Iconv(3) implementation";
license = [
lib.licenses.bsd2
lib.licenses.bsd3
]
++ lib.optional finalAttrs.finalPackage.doInstallCheck lib.licenses.apple-psl10;
mainProgram = "iconv";
};
})