128 lines
5.2 KiB
Nix
128 lines
5.2 KiB
Nix
{ gccStdenv, lib, pkgs,
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git, openssl, autoconf, gcc, coreutils, gnused, gnugrep,
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makeStaticLibraries,
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src, version, git-version,
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stampYmd ? 0, stampHms ? 0,
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gambit-support,
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optimizationSetting ? "-O1",
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gambit-params ? pkgs.gambit-support.stable-params }:
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# Note that according to a benchmark run by Marc Feeley on May 2018,
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# clang is 10x (with default settings) to 15% (with -O2) slower than GCC at compiling
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# Gambit output, producing code that is 3x slower. IIRC the benchmarks from Gambit@30,
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# the numbers were still heavily in favor of GCC in October 2019.
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# Thus we use GCC over clang, even on macOS.
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#
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# Also note that I (fare) just ran benchmarks from https://github.com/ecraven/r7rs-benchmarks
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# with Gambit 4.9.3 with -O1 vs -O2 vs -Os on Feb 2020. Which wins depends on the benchmark.
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# The fight is unclear between -O1 and -O2, where -O1 wins more often, by up to 17%,
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# but sometimes -O2 wins, once by up to 43%, so that overall -O2 is 5% faster.
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# However, -Os seems more consistent in winning slightly against both -O1 and -O2,
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# and is overall 15% faster than -O2. As for compile times, -O1 is fastest,
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# -Os is about 29%-33% slower than -O1, while -O2 is about 40%-50% slower than -O1.
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#
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# Overall, -Os seems like the best choice, but I care more about compile-time,
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# so I stick with -O1 (in the defaults above), which is also the default for Gambit.
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gccStdenv.mkDerivation rec {
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pname = "gambit";
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inherit src version git-version;
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bootstrap = gambit-support.gambit-bootstrap;
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nativeBuildInputs = [ git autoconf ];
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# TODO: if/when we can get all the library packages we depend on to have static versions,
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# we could use something like (makeStaticLibraries openssl) to enable creation
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# of statically linked binaries by gsc.
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buildInputs = [ openssl ];
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# TODO: patch gambit's source so it has the full path to sed, grep, fgrep? Is there more?
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# Or wrap relevant programs to add a suitable PATH ?
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#runtimeDeps = [ gnused gnugrep ];
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configureFlags = [
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"--enable-targets=${gambit-params.targets}"
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"--enable-single-host"
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"--enable-c-opt=${optimizationSetting}"
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"--enable-c-opt-rts=-O2"
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"--enable-gcc-opts"
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"--enable-shared"
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"--enable-absolute-shared-libs" # Yes, NixOS will want an absolute path, and fix it.
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"--enable-openssl"
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"--enable-dynamic-clib"
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#"--enable-default-compile-options='(compactness 9)'" # Make life easier on the JS backend
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"--enable-default-runtime-options=${gambit-params.defaultRuntimeOptions}"
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# "--enable-rtlib-debug" # used by Geiser, but only on recent-enough gambit, and messes js runtime
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# "--enable-debug" # Nope: enables plenty of good stuff, but also the costly console.log
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# "--enable-multiple-versions" # Nope, NixOS already does version multiplexing
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# "--enable-guide"
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# "--enable-track-scheme"
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# "--enable-high-res-timing"
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# "--enable-max-processors=4"
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# "--enable-multiple-vms"
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# "--enable-dynamic-tls"
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# "--enable-multiple-threaded-vms" # when SMP branch is merged in
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# "--enable-thread-system=posix" # default when --enable-multiple-vms is on.
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# "--enable-profile"
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# "--enable-coverage"
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# "--enable-inline-jumps"
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# "--enable-char-size=1" # default is 4
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# "--enable-march=native" # Nope, makes it not work on machines older than the builder
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] ++ gambit-params.extraOptions
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# Do not enable poll on darwin due to https://github.com/gambit/gambit/issues/498
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++ lib.optional (!gccStdenv.isDarwin) "--enable-poll";
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configurePhase = ''
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export CC=${gccStdenv.cc}/bin/${gccStdenv.cc.targetPrefix}gcc \
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CXX=${gccStdenv.cc}/bin/${gccStdenv.cc.targetPrefix}g++ \
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CPP=${gccStdenv.cc}/bin/${gccStdenv.cc.targetPrefix}cpp \
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CXXCPP=${gccStdenv.cc}/bin/${gccStdenv.cc.targetPrefix}cpp \
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LD=${gccStdenv.cc}/bin/${gccStdenv.cc.targetPrefix}ld \
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XMKMF=${coreutils}/bin/false
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unset CFLAGS LDFLAGS LIBS CPPFLAGS CXXFLAGS
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${gambit-params.fixStamp git-version stampYmd stampHms}
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./configure --prefix=$out/gambit ${builtins.concatStringsSep " " configureFlags}
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# OS-specific paths are hardcoded in ./configure
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substituteInPlace config.status \
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${lib.optionalString (gccStdenv.isDarwin && !gambit-params.stable)
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''--replace "/usr/local/opt/openssl@1.1" "${lib.getLib openssl}"''} \
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--replace "/usr/local/opt/openssl" "${lib.getLib openssl}"
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./config.status
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'';
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buildPhase = ''
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# The MAKEFLAGS setting is a workaround for https://github.com/gambit/gambit/issues/833
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export MAKEFLAGS="--output-sync=recurse"
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echo "Make bootstrap compiler, from release bootstrap"
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mkdir -p boot
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cp -rp ${bootstrap}/gambit/. boot/.
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chmod -R u+w boot
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cd boot
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cp ../gsc/makefile.in ../gsc/*.scm gsc/
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echo > include/stamp.h # No stamp needed for the bootstrap compiler
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./configure
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for i in lib gsi gsc ; do (cd $i ; make -j$NIX_BUILD_CORES) ; done
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cd ..
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cp boot/gsc/gsc gsc-boot
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echo "Now use the bootstrap compiler to build the real thing!"
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make -j$NIX_BUILD_CORES from-scratch
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${lib.optionalString gambit-params.modules "make -j$NIX_BUILD_CORES modules"}
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'';
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postInstall = ''
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mkdir $out/bin
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cd $out/bin
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ln -s ../gambit/bin/* .
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'';
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doCheck = true;
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dontStrip = true;
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meta = gambit-support.meta;
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}
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