Eman Resu
94 lines
3.0 KiB
Nix
94 lines
3.0 KiB
Nix
{
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lib,
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stdenv,
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version,
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buildPlatform,
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hostPlatform,
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targetPlatform,
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gnat-bootstrap ? null,
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langAda ? false,
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langFortran,
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langJit ? false,
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langGo,
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withoutTargetLibc,
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enableShared,
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enableMultilib,
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pkgsBuildTarget,
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buildIsHost,
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hostIsTarget,
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}:
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assert langAda -> gnat-bootstrap != null;
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lib.optionalString (hostPlatform.isSunOS && hostPlatform.is64bit) ''
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export NIX_LDFLAGS=`echo $NIX_LDFLAGS | sed -e s~$prefix/lib~$prefix/lib/amd64~g`
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export LDFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $LDFLAGS_FOR_TARGET"
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export CXXFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CXXFLAGS_FOR_TARGET"
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export CFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CFLAGS_FOR_TARGET"
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''
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+ lib.optionalString langAda ''
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export PATH=${gnat-bootstrap}/bin:$PATH
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''
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# For a cross-built native compiler, i.e. build!=(host==target), the
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# bundled libgfortran needs a gfortran which can run on the
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# buildPlatform and emit code for the targetPlatform. The compiler
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# which is built alongside gfortran in this configuration doesn't
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# meet that need: it runs on the hostPlatform.
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+
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lib.optionalString
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(
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langFortran
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&& (
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!buildIsHost && hostIsTarget
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)
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)
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''
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export GFORTRAN_FOR_TARGET=${pkgsBuildTarget.gfortran}/bin/${stdenv.targetPlatform.config}-gfortran
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''
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# In order to properly install libgccjit on macOS Catalina, strip(1)
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# upon installation must not remove external symbols, otherwise the
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# install step errors with "symbols referenced by indirect symbol
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# table entries that can't be stripped".
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+ lib.optionalString (hostPlatform.isDarwin && langJit) ''
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export STRIP='strip -x'
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''
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# HACK: if host and target config are the same, but the platforms are
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# actually different we need to convince the configure script that it
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# is in fact building a cross compiler although it doesn't believe it.
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+ lib.optionalString (targetPlatform.config == hostPlatform.config && !hostIsTarget) ''
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substituteInPlace configure --replace is_cross_compiler=no is_cross_compiler=yes
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''
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# Normally (for host != target case) --without-headers automatically
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# enables 'inhibit_libc=true' in gcc's gcc/configure.ac. But case of
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# gcc->clang or dynamic->static "cross"-compilation manages to evade it: there
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# ! lib.systems.equals hostPlatform targetPlatform, hostPlatform.config == targetPlatform.config.
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# We explicitly inhibit libc headers use in this case as well.
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+
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lib.optionalString
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(!hostIsTarget && withoutTargetLibc && targetPlatform.config == hostPlatform.config)
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''
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export inhibit_libc=true
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''
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# We need to reconfigure the build system in case it has been patched. Since
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# gcc is patched quite often, reconfiguring it unconditionally makes sense.
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# This is also good practice for a couple other reasons.
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# See <https://wiki.debian.org/Autoreconf>.
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+ ''
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for i in */configure.ac; do
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pushd "$(dirname "$i")"
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echo "Running autoreconf in $PWD"
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autoconf -f
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popd
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done
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''
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+ lib.optionalString (!hostIsTarget && withoutTargetLibc && enableShared) (
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import ./libgcc-buildstuff.nix { inherit lib stdenv; }
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)
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