96 lines
3.8 KiB
Nix
96 lines
3.8 KiB
Nix
{ stdenv, git, openssl, autoconf, pkgs, makeStaticLibraries, version, gcc, src, coreutils }:
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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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# 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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# Overall, -Os seems like the best choice, and that's what we now use.
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stdenv.mkDerivation rec {
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pname = "gambit";
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inherit version;
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inherit src;
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bootstrap = import ./bootstrap.nix ( pkgs );
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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 = [ git autoconf bootstrap openssl ];
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configureFlags = [
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"--enable-single-host"
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"--enable-c-opt=-Os"
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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-poll"
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"--enable-openssl"
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"--enable-default-runtime-options=f8,-8,t8" # Default to UTF-8 for source and all I/O
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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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];
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configurePhase = ''
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export CC=${gcc}/bin/gcc CXX=${gcc}/bin/g++ \
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CPP=${gcc}/bin/cpp CXXCPP=${gcc}/bin/cpp LD=${gcc}/bin/ld \
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XMKMF=${coreutils}/bin/false
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unset CFLAGS LDFLAGS LIBS CPPFLAGS CXXFLAGS
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./configure --prefix=$out ${builtins.concatStringsSep " " configureFlags}
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# OS-specific paths are hardcoded in ./configure
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substituteInPlace config.status \
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--replace /usr/local/opt/openssl/lib "${openssl.out}/lib" \
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--replace /usr/local/opt/openssl@1.1/lib "${openssl.out}/lib"
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./config.status
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'';
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buildPhase = ''
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# Make bootstrap compiler, from release bootstrap
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mkdir -p boot &&
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cp -rp ${bootstrap}/. 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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./configure &&
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for i in lib gsi gsc ; do (cd $i ; make ) ; done &&
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cd .. &&
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cp boot/gsc/gsc gsc-boot &&
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# Now use the bootstrap compiler to build the real thing!
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make -j2 from-scratch
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'';
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doCheck = true;
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meta = {
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description = "Optimizing Scheme to C compiler";
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homepage = "http://gambitscheme.org";
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license = stdenv.lib.licenses.lgpl2;
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# NB regarding platforms: only actually tested on Linux, *should* work everywhere,
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# but *might* need adaptation e.g. on macOS.
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platforms = stdenv.lib.platforms.unix;
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maintainers = with stdenv.lib.maintainers; [ thoughtpolice raskin fare ];
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};
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}
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