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treewide: Get rid of cc.gcc

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Instead, we have a new `gccForLibs`, which has the appropriate
definition for e.g. avoiding `x86_32` linking problems.
This commit is contained in:
John Ericson 2020-06-17 20:33:56 +00:00
parent 3541e8b4fb
commit 92f96f47b0
17 changed files with 78 additions and 86 deletions
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18
pkgs/build-support/cc-wrapper/default.nix
View File

@ -8,6 +8,7 @@
{ name ? ""
, stdenvNoCC
, cc ? null, libc ? null, bintools, coreutils ? null, shell ? stdenvNoCC.shell
, gccForLibs ? null
, zlib ? null
, nativeTools, noLibc ? false, nativeLibc, nativePrefix ? ""
, propagateDoc ? cc != null && cc ? man
@ -262,11 +263,11 @@ stdenv.mkDerivation {
##
## GCC libs for non-GCC support
##
+ optionalString (isClang && libcxx == null && cc ? gcc) ''
+ optionalString (isClang && libcxx == null && !(stdenv.targetPlatform.useLLVM or false) && gccForLibs != null) ''
echo "-B${cc.gcc}/lib/gcc/${targetPlatform.config}/${cc.gcc.version}" >> $out/nix-support/cc-cflags
echo "-L${cc.gcc}/lib/gcc/${targetPlatform.config}/${cc.gcc.version}" >> $out/nix-support/cc-ldflags
echo "-L${cc.gcc.lib}/${targetPlatform.config}/lib" >> $out/nix-support/cc-ldflags
echo "-B${gccForLibs}/lib/gcc/${targetPlatform.config}/${gccForLibs.version}" >> $out/nix-support/cc-cflags
echo "-L${gccForLibs}/lib/gcc/${targetPlatform.config}/${gccForLibs.version}" >> $out/nix-support/cc-ldflags
echo "-L${gccForLibs.lib}/${targetPlatform.config}/lib" >> $out/nix-support/cc-ldflags
''
##
@ -306,14 +307,15 @@ stdenv.mkDerivation {
# We have a libc++ directly, we have one via "smuggled" GCC, or we have one
# bundled with the C compiler because it is GCC
+ optionalString (libcxx != null || cc.gcc.langCC or false || (isGNU && cc.langCC or false)) ''
+ optionalString (libcxx != null || (isClang && !(stdenv.targetPlatform.useLLVM or false) && gccForLibs.langCC or false) || (isGNU && cc.langCC or false)) ''
touch "$out/nix-support/libcxx-cxxflags"
touch "$out/nix-support/libcxx-ldflags"
'' + optionalString (libcxx == null && cc ? gcc) ''
for dir in ${cc.gcc}/include/c++/*; do
''
+ optionalString (libcxx == null && (isClang && !(stdenv.targetPlatform.useLLVM or false) && gccForLibs.langCC or false)) ''
for dir in ${gccForLibs}/include/c++/*; do
echo "-isystem $dir" >> $out/nix-support/libcxx-cxxflags
done
for dir in ${cc.gcc}/include/c++/*/${targetPlatform.config}; do
for dir in ${gccForLibs}/include/c++/*/${targetPlatform.config}; do
echo "-isystem $dir" >> $out/nix-support/libcxx-cxxflags
done
''

2
pkgs/development/compilers/computecpp/default.nix
View File

@ -37,8 +37,6 @@ stdenv.mkDerivation rec {
passthru = {
isClang = true;
} // stdenv.lib.optionalAttrs (stdenv.targetPlatform.isLinux || (stdenv.cc.isGNU && stdenv.cc.cc ? gcc)) {
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
};
meta = with stdenv.lib; {

10
pkgs/development/compilers/emscripten/fastcomp/emscripten-fastcomp.nix
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@ -1,9 +1,7 @@
{ emscriptenVersion, stdenv, fetchFromGitHub, cmake, python, gtest, ... }:
{ emscriptenVersion, stdenv, fetchFromGitHub, cmake, python, gtest, gccForLibs, ... }:
let
rev = emscriptenVersion;
haveGcc = stdenv.cc.isGNU || stdenv.cc.cc ? gcc;
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
in
stdenv.mkDerivation rec {
name = "emscripten-fastcomp-${rev}";
@ -35,16 +33,14 @@ stdenv.mkDerivation rec {
#"-DLLVM_CONFIG=${llvm}/bin/llvm-config"
"-DLLVM_BUILD_TESTS=ON"
"-DCLANG_INCLUDE_TESTS=ON"
] ++ (stdenv.lib.optional (stdenv.isLinux && haveGcc)
] ++ (stdenv.lib.optional stdenv.isLinux
# necessary for clang to find crtend.o
"-DGCC_INSTALL_PREFIX=${gcc}"
"-DGCC_INSTALL_PREFIX=${gccForLibs}"
);
enableParallelBuilding = true;
passthru = {
isClang = true;
} // stdenv.lib.optionalAttrs haveGcc {
inherit gcc;
};
meta = with stdenv.lib; {

2
pkgs/development/compilers/llvm/10/clang/default.nix
View File

@ -86,8 +86,6 @@ let
passthru = {
isClang = true;
inherit llvm;
} // stdenv.lib.optionalAttrs (stdenv.targetPlatform.isLinux || (stdenv.cc.isGNU && stdenv.cc.cc ? gcc)) {
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
};
meta = {

10
pkgs/development/compilers/llvm/10/default.nix
View File

@ -1,5 +1,6 @@
{ lowPrio, newScope, pkgs, stdenv, cmake
{ lowPrio, newScope, pkgs, stdenv, cmake, gccForLibs
, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
, buildPackages
, buildLlvmTools # tools, but from the previous stage, for cross
, targetLlvmLibraries # libraries, but from the next stage, for cross
}:
@ -24,8 +25,8 @@ let
ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${tools.clang-unwrapped.gcc}" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${gccForLibs}" >> $out/nix-support/cc-cflags
'';
in {
@ -59,7 +60,8 @@ let
libstdcxxClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null; # libstdcxx is smuggled in with clang.gcc
# libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
libcxx = null;
extraPackages = [
targetLlvmLibraries.compiler-rt
];

3
pkgs/development/compilers/llvm/5/clang/default.nix
View File

@ -4,7 +4,6 @@
}:
let
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
self = stdenv.mkDerivation ({
pname = "clang";
inherit version;
@ -77,8 +76,6 @@ let
passthru = {
isClang = true;
inherit llvm;
} // stdenv.lib.optionalAttrs stdenv.isLinux {
inherit gcc;
};
meta = {

10
pkgs/development/compilers/llvm/5/default.nix
View File

@ -1,5 +1,6 @@
{ lowPrio, newScope, pkgs, stdenv, cmake
{ lowPrio, newScope, pkgs, stdenv, cmake, gccForLibs
, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith
, buildPackages
, buildLlvmTools # tools, but from the previous stage, for cross
, targetLlvmLibraries # libraries, but from the next stage, for cross
}:
@ -24,8 +25,8 @@ let
ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${tools.clang-unwrapped.gcc}" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${gccForLibs}" >> $out/nix-support/cc-cflags
'';
in {
@ -51,7 +52,8 @@ let
libstdcxxClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null; # libstdcxx is smuggled in with clang.gcc
# libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
libcxx = null;
extraPackages = [
targetLlvmLibraries.compiler-rt
];

3
pkgs/development/compilers/llvm/6/clang/default.nix
View File

@ -4,7 +4,6 @@
}:
let
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
self = stdenv.mkDerivation ({
pname = "clang";
inherit version;
@ -77,8 +76,6 @@ let
passthru = {
isClang = true;
inherit llvm;
} // stdenv.lib.optionalAttrs stdenv.targetPlatform.isLinux {
inherit gcc;
};
meta = {

10
pkgs/development/compilers/llvm/6/default.nix
View File

@ -1,5 +1,6 @@
{ lowPrio, newScope, pkgs, stdenv, cmake
{ lowPrio, newScope, pkgs, stdenv, cmake, gccForLibs
, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith
, buildPackages
, buildLlvmTools # tools, but from the previous stage, for cross
, targetLlvmLibraries # libraries, but from the next stage, for cross
}:
@ -24,8 +25,8 @@ let
ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${tools.clang-unwrapped.gcc}" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${gccForLibs}" >> $out/nix-support/cc-cflags
'';
in {
@ -51,7 +52,8 @@ let
libstdcxxClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null; # libstdcxx is smuggled in with clang.gcc
# libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
libcxx = null;
extraPackages = [
targetLlvmLibraries.compiler-rt
];

2
pkgs/development/compilers/llvm/7/clang/default.nix
View File

@ -87,8 +87,6 @@ let
passthru = {
isClang = true;
inherit llvm;
} // stdenv.lib.optionalAttrs (stdenv.targetPlatform.isLinux || (stdenv.cc.isGNU && stdenv.cc.cc ? gcc)) {
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
};
meta = {

10
pkgs/development/compilers/llvm/7/default.nix
View File

@ -1,5 +1,6 @@
{ lowPrio, newScope, pkgs, stdenv, cmake
{ lowPrio, newScope, pkgs, stdenv, cmake, gccForLibs
, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
, buildPackages
, buildLlvmTools # tools, but from the previous stage, for cross
, targetLlvmLibraries # libraries, but from the next stage, for cross
}:
@ -24,8 +25,8 @@ let
ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${tools.clang-unwrapped.gcc}" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${gccForLibs}" >> $out/nix-support/cc-cflags
'';
in {
@ -58,7 +59,8 @@ let
libstdcxxClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null; # libstdcxx is smuggled in with clang.gcc
# libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
libcxx = null;
extraPackages = [
targetLlvmLibraries.compiler-rt
];

2
pkgs/development/compilers/llvm/8/clang/default.nix
View File

@ -97,8 +97,6 @@ let
passthru = {
isClang = true;
inherit llvm;
} // stdenv.lib.optionalAttrs (stdenv.targetPlatform.isLinux || (stdenv.cc.isGNU && stdenv.cc.cc ? gcc)) {
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
};
meta = {

10
pkgs/development/compilers/llvm/8/default.nix
View File

@ -1,5 +1,6 @@
{ lowPrio, newScope, pkgs, stdenv, cmake
{ lowPrio, newScope, pkgs, stdenv, cmake, gccForLibs
, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
, buildPackages
, buildLlvmTools # tools, but from the previous stage, for cross
, targetLlvmLibraries # libraries, but from the next stage, for cross
}:
@ -24,8 +25,8 @@ let
ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${tools.clang-unwrapped.gcc}" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${gccForLibs}" >> $out/nix-support/cc-cflags
'';
in {
@ -59,7 +60,8 @@ let
libstdcxxClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null; # libstdcxx is smuggled in with clang.gcc
# libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
libcxx = null;
extraPackages = [
targetLlvmLibraries.compiler-rt
];

2
pkgs/development/compilers/llvm/9/clang/default.nix
View File

@ -92,8 +92,6 @@ let
passthru = {
isClang = true;
inherit llvm;
} // stdenv.lib.optionalAttrs (stdenv.targetPlatform.isLinux || (stdenv.cc.isGNU && stdenv.cc.cc ? gcc)) {
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
};
meta = {

10
pkgs/development/compilers/llvm/9/default.nix
View File

@ -1,5 +1,6 @@
{ lowPrio, newScope, pkgs, stdenv, cmake
{ lowPrio, newScope, pkgs, stdenv, cmake, gccForLibs
, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
, buildPackages
, buildLlvmTools # tools, but from the previous stage, for cross
, targetLlvmLibraries # libraries, but from the next stage, for cross
}:
@ -24,8 +25,8 @@ let
ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${tools.clang-unwrapped.gcc}" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${gccForLibs}" >> $out/nix-support/cc-cflags
'';
in {
@ -59,7 +60,8 @@ let
libstdcxxClang = wrapCCWith rec {
cc = tools.clang-unwrapped;
libcxx = null; # libstdcxx is smuggled in with clang.gcc
# libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
libcxx = null;
extraPackages = [
targetLlvmLibraries.compiler-rt
];

7
pkgs/development/compilers/swift/default.nix
View File

@ -2,6 +2,7 @@
, cmake
, coreutils
, glibc
, gccForLibs
, which
, perl
, libedit
@ -121,7 +122,7 @@ let
cmakeFlags = [
"-DGLIBC_INCLUDE_PATH=${stdenv.cc.libc.dev}/include"
"-DC_INCLUDE_DIRS=${stdenv.lib.makeSearchPathOutput "dev" "include" devInputs}:${libxml2.dev}/include/libxml2"
"-DGCC_INSTALL_PREFIX=${clang.cc.gcc}"
"-DGCC_INSTALL_PREFIX=${gccForLibs}"
];
in
@ -199,7 +200,7 @@ stdenv.mkDerivation {
substituteInPlace swift/stdlib/public/Platform/CMakeLists.txt \
--replace '/usr/include' "${stdenv.cc.libc.dev}/include"
substituteInPlace swift/utils/build-script-impl \
--replace '/usr/include/c++' "${clang.cc.gcc}/include/c++"
--replace '/usr/include/c++' "${gccForLibs}/include/c++"
patch -p1 -d swift -i ${./patches/glibc-arch-headers.patch}
patch -p1 -d swift -i ${./patches/0001-build-presets-linux-don-t-require-using-Ninja.patch}
patch -p1 -d swift -i ${./patches/0002-build-presets-linux-allow-custom-install-prefix.patch}
@ -264,7 +265,7 @@ stdenv.mkDerivation {
export NIX_CFLAGS_COMPILE="$(< $NIX_CC/nix-support/libcxx-cxxflags) $NIX_CFLAGS_COMPILE"
# During the Swift build, a full local LLVM build is performed and the resulting clang is invoked.
# This compiler is not using the Nix wrappers, so it needs some help to find things.
export NIX_LDFLAGS_BEFORE="-rpath ${clang.cc.gcc.lib}/lib -L${clang.cc.gcc.lib}/lib $NIX_LDFLAGS_BEFORE"
export NIX_LDFLAGS_BEFORE="-rpath ${gccForLibs.lib}/lib -L${gccForLibs.lib}/lib $NIX_LDFLAGS_BEFORE"
# However, we want to use the wrapped compiler whenever possible.
export CC="${clang}/bin/clang"

53
pkgs/top-level/all-packages.nix
View File

@ -8319,8 +8319,8 @@ in
mkdir -p "$rsrc/lib"
ln -s "${cc}/lib" "$rsrc/include"
echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && cc ? gcc && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${cc.gcc}" >> $out/nix-support/cc-cflags
'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && !(stdenv.targetPlatform.useLLVM or false)) ''
echo "--gcc-toolchain=${gccForLibs}" >> $out/nix-support/cc-cflags
'';
};
@ -9112,55 +9112,41 @@ in
llvmPackages = recurseIntoAttrs llvmPackages_7;
llvmPackages_5 = callPackage ../development/compilers/llvm/5 ({
llvmPackages_5 = callPackage ../development/compilers/llvm/5 {
inherit (stdenvAdapters) overrideCC;
buildLlvmTools = buildPackages.llvmPackages_5.tools;
targetLlvmLibraries = targetPackages.llvmPackages_5.libraries;
} // stdenv.lib.optionalAttrs (stdenv.hostPlatform.isi686 && stdenv.cc.isGNU) {
stdenv = gcc6Stdenv; # with gcc-7: undefined reference to `__divmoddi4'
});
};
llvmPackages_6 = callPackage ../development/compilers/llvm/6 ({
llvmPackages_6 = callPackage ../development/compilers/llvm/6 {
inherit (stdenvAdapters) overrideCC;
buildLlvmTools = buildPackages.llvmPackages_6.tools;
targetLlvmLibraries = targetPackages.llvmPackages_6.libraries;
} // stdenv.lib.optionalAttrs (stdenv.hostPlatform.isi686 && stdenv.cc.isGNU) {
# with gcc-7 on i686: undefined reference to `__divmoddi4'
# Failing tests with gcc8.
stdenv = overrideCC stdenv (if stdenv.hostPlatform.isi686 then gcc6 else gcc7);
});
};
llvmPackages_7 = callPackage ../development/compilers/llvm/7 ({
llvmPackages_7 = callPackage ../development/compilers/llvm/7 {
inherit (stdenvAdapters) overrideCC;
buildLlvmTools = buildPackages.llvmPackages_7.tools;
targetLlvmLibraries = targetPackages.llvmPackages_7.libraries;
} // stdenv.lib.optionalAttrs (stdenv.hostPlatform.isi686 && buildPackages.stdenv.cc.isGNU) {
stdenv = gcc6Stdenv; # with gcc-7: undefined reference to `__divmoddi4'
});
};
llvmPackages_8 = callPackage ../development/compilers/llvm/8 ({
llvmPackages_8 = callPackage ../development/compilers/llvm/8 {
inherit (stdenvAdapters) overrideCC;
buildLlvmTools = buildPackages.llvmPackages_8.tools;
targetLlvmLibraries = targetPackages.llvmPackages_8.libraries;
} // stdenv.lib.optionalAttrs (stdenv.hostPlatform.isi686 && buildPackages.stdenv.cc.isGNU) {
stdenv = gcc6Stdenv; # with gcc-7: undefined reference to `__divmoddi4'
});
};
llvmPackages_9 = callPackage ../development/compilers/llvm/9 ({
llvmPackages_9 = callPackage ../development/compilers/llvm/9 {
inherit (stdenvAdapters) overrideCC;
buildLlvmTools = buildPackages.llvmPackages_9.tools;
targetLlvmLibraries = targetPackages.llvmPackages_9.libraries;
} // stdenv.lib.optionalAttrs (stdenv.hostPlatform.isi686 && buildPackages.stdenv.cc.isGNU) {
stdenv = gcc6Stdenv; # with gcc-7: undefined reference to `__divmoddi4'
});
};
llvmPackages_10 = callPackage ../development/compilers/llvm/10 ({
llvmPackages_10 = callPackage ../development/compilers/llvm/10 {
inherit (stdenvAdapters) overrideCC;
buildLlvmTools = buildPackages.llvmPackages_10.tools;
targetLlvmLibraries = targetPackages.llvmPackages_10.libraries;
} // stdenv.lib.optionalAttrs (stdenv.hostPlatform.isi686 && buildPackages.stdenv.cc.isGNU) {
stdenv = gcc7Stdenv;
});
};
llvmPackages_latest = llvmPackages_10;
@ -10496,6 +10482,17 @@ in
stdenvNoLibs = gccStdenvNoLibs; # cannot be built with clang it seems
};
# This is for e.g. LLVM libraries on linux.
gccForLibs =
# with gcc-7: undefined reference to `__divmoddi4'
if stdenv.targetPlatform.isi686
then gcc6.cc
else if stdenv.targetPlatform == stdenv.hostPlatform && targetPackages.stdenv.cc.isGNU
# Can only do this is in the native case, otherwise we might get infinite
# recursion if `targetPackages.stdenv.cc.cc` itself uses `gccForLibs`.
then targetPackages.stdenv.cc.cc
else gcc.cc;
libstdcxx5 = callPackage ../development/libraries/gcc/libstdc++/5.nix { };
libsigrok = callPackage ../development/tools/libsigrok { };