mirror of
https://github.com/NixOS/nixpkgs.git
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b9acfb4ecf
Following legacy packing conventions, `isArm` was defined just for
32-bit ARM instruction set. This is confusing to non packagers though,
because Aarch64 is an ARM instruction set.
The official ARM overview for ARMv8[1] is surprisingly not confusing,
given the overall state of affairs for ARM naming conventions, and
offers us a solution. It divides the nomenclature into three levels:
```
ISA: ARMv8 {-A, -R, -M}
/ \
Mode: Aarch32 Aarch64
| / \
Encoding: A64 A32 T32
```
At the top is the overall v8 instruction set archicture. Second are the
two modes, defined by bitwidth but differing in other semantics too, and
buttom are the encodings, (hopefully?) isomorphic if they encode the
same mode.
The 32 bit encodings are mostly backwards compatible with previous
non-Thumb and Thumb encodings, and if so we can pun the mode names to
instead mean "sets of compatable or isomorphic encodings", and then
voilà we have nice names for 32-bit and 64-bit arm instruction sets
which do not use the word ARM so as to not confused either laymen or
experienced ARM packages.
[1]: https://developer.arm.com/products/architecture/a-profile
(cherry picked from commit ba52ae5048)
96 lines
3.1 KiB
Nix
96 lines
3.1 KiB
Nix
{ version, sha256, patches ? [], patchFlags ? "" }:
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{ stdenv, fetchurl, fetchpatch, fixDarwinDylibNames
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# Cross-compiled icu4c requires a build-root of a native compile
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, buildRootOnly ? false, nativeBuildRoot, buildPlatform, hostPlatform
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}:
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let
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pname = "icu4c";
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baseAttrs = {
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src = fetchurl {
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url = "http://download.icu-project.org/files/${pname}/${version}/${pname}-"
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+ (stdenv.lib.replaceChars ["."] ["_"] version) + "-src.tgz";
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inherit sha256;
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};
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postUnpack = ''
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sourceRoot=''${sourceRoot}/source
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echo Source root reset to ''${sourceRoot}
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'';
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# https://sourceware.org/glibc/wiki/Release/2.26#Removal_of_.27xlocale.h.27
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postPatch = if (stdenv.hostPlatform.libc == "glibc" || stdenv.hostPlatform.libc == "musl")
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then "substituteInPlace i18n/digitlst.cpp --replace '<xlocale.h>' '<locale.h>'"
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else null; # won't find locale_t on darwin
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inherit patchFlags patches;
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preConfigure = ''
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sed -i -e "s|/bin/sh|${stdenv.shell}|" configure
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# $(includedir) is different from $(prefix)/include due to multiple outputs
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sed -i -e 's|^\(CPPFLAGS = .*\) -I\$(prefix)/include|\1 -I$(includedir)|' config/Makefile.inc.in
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'' + stdenv.lib.optionalString stdenv.isAarch32 ''
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# From https://archlinuxarm.org/packages/armv7h/icu/files/icudata-stdlibs.patch
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sed -e 's/LDFLAGSICUDT=-nodefaultlibs -nostdlib/LDFLAGSICUDT=/' -i config/mh-linux
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'';
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configureFlags = "--disable-debug" +
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stdenv.lib.optionalString (stdenv.isFreeBSD || stdenv.isDarwin) " --enable-rpath" +
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stdenv.lib.optionalString (buildPlatform != hostPlatform) " --with-cross-build=${nativeBuildRoot}";
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enableParallelBuilding = true;
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meta = with stdenv.lib; {
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description = "Unicode and globalization support library";
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homepage = http://site.icu-project.org/;
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maintainers = with maintainers; [ raskin ];
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platforms = platforms.all;
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};
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};
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realAttrs = baseAttrs // {
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name = pname + "-" + version;
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outputs = [ "out" "dev" ];
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outputBin = "dev";
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# FIXME: This fixes dylib references in the dylibs themselves, but
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# not in the programs in $out/bin.
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buildInputs = stdenv.lib.optional stdenv.isDarwin fixDarwinDylibNames;
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# remove dependency on bootstrap-tools in early stdenv build
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postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
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sed -i 's/INSTALL_CMD=.*install/INSTALL_CMD=install/' $out/lib/icu/${version}/pkgdata.inc
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'' + ''
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substituteInPlace "$dev/bin/icu-config" \
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--replace \''${pkglibdir}/Makefile.inc "$dev/lib/icu/Makefile.inc"
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'';
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postFixup = ''moveToOutput lib/icu "$dev" '';
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};
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buildRootOnlyAttrs = baseAttrs // {
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name = pname + "-build-root-" + version;
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preConfigure = baseAttrs.preConfigure + ''
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mkdir build
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cd build
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configureScript=../configure
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'';
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postBuild = ''
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cd ..
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mv build $out
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echo "Doing build-root only, exiting now" >&2
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exit 0
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'';
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};
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attrs = if buildRootOnly
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then buildRootOnlyAttrs
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else realAttrs;
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in
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stdenv.mkDerivation attrs
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