clang

unvendor

06/using-nix/2a5-gnugcc10.nix

@@ -0,0 +1,104 @@
+{ fetchurl, mkDerivationStage2
+, stage1, static-gnumake, static-binutils, intermediate-musl, gnugcc4-cpp }:
+
+let
+  source-tarball-gcc = fetchurl {
+    # local = /downloads/gcc-10.5.0.tar.xz;
+    url = "https://ftp.gnu.org/gnu/gcc/gcc-10.5.0/gcc-10.5.0.tar.xz";
+    sha256 = "25109543fdf46f397c347b5d8b7a2c7e5694a5a51cce4b9c6e1ea8a71ca307c1";
+  };
+  source-tarball-gmp = fetchurl {
+    # local = /downloads/gmp-6.1.0.tar.xz;
+    url = "https://gmplib.org/download/gmp/gmp-6.1.0.tar.xz";
+    sha256 = "68dadacce515b0f8a54f510edf07c1b636492bcdb8e8d54c56eb216225d16989";
+  };
+  source-tarball-mpfr = fetchurl {
+    # local = /downloads/mpfr-3.1.4.tar.xz;
+    url = "https://www.mpfr.org/mpfr-3.1.4/mpfr-3.1.4.tar.xz";
+    sha256 = "761413b16d749c53e2bfd2b1dfaa3b027b0e793e404b90b5fbaeef60af6517f5";
+  };
+  source-tarball-mpc = fetchurl {
+    # local = /downloads/mpc-1.0.3.tar.gz;
+    url = "http://www.multiprecision.org/downloads/mpc-1.0.3.tar.gz";
+    sha256 = "617decc6ea09889fb08ede330917a00b16809b8db88c29c31bfbb49cbf88ecc3";
+  };
+  source-tarball-isl = fetchurl {
+    # local = /downloads/isl-0.18.tar.bz2;
+    url = "http://gcc.gnu.org/pub/gcc/infrastructure/isl-0.18.tar.bz2";
+    sha256 = "6b8b0fd7f81d0a957beb3679c81bbb34ccc7568d5682844d8924424a0dadcb1b";
+  };
+in
+  mkDerivationStage2 {
+    name = "bootstrap-2a5-gnugcc10";
+    buildInputPaths = [
+      "${stage1.protobusybox}/bin"
+      "${static-gnumake}/bin"
+      "${static-binutils}/bin"
+      "${gnugcc4-cpp}/bin"
+    ];
+    script = ''
+        mkdir build-dir; cd build-dir
+      # alias ash to sh:
+        mkdir aliases; ln -s ${stage1.protobusybox}/bin/ash aliases/sh
+        export PATH="$(pwd)/aliases:$PATH"
+      # unpack:
+        unpack ${source-tarball-gcc}
+        mkdir mpfr mpc gmp isl
+        unpack ${source-tarball-mpfr} -C mpfr
+        unpack ${source-tarball-mpc} -C mpc
+        unpack ${source-tarball-gmp} -C gmp
+        unpack ${source-tarball-isl} -C isl
+      # fixup:
+        SYSROOT=${intermediate-musl}
+        sed -i 's|/bin/sh|${stage1.protobusybox}/bin/ash|' \
+          missing move-if-change mkdep mkinstalldirs symlink-tree install-sh \
+          gcc/exec-tool.in gcc/genmultilib libgcc/mkheader.sh
+        sed -i 's|^\(\s*\)sh |\1${stage1.protobusybox}/bin/ash |' \
+          libgcc/Makefile.in
+        sed -i "s|/lib/ld-musl-x86_64.so.1|$SYSROOT/lib/libc.so|" \
+          gcc/config/i386/linux64.h
+        sed -i 's|m64=../lib64|m64=../lib|' gcc/config/i386/t-linux64
+        sed -i 's|"os/gnu-linux"|"os/generic"|' libstdc++-v3/configure.host
+        sed -i 's|LIBGCC2_DEBUG_CFLAGS = -g|LIBGCC2_DEBUG_CFLAGS = |' \
+          libgcc/Makefile.in
+        # see libtool's 74c8993c178a1386ea5e2363a01d919738402f30
+        sed -i 's/| \$NL2SP/| sort | $NL2SP/' ltmain.sh */ltmain.sh
+      # configure:
+        export ac_cv_func_strncmp_works=no
+        export ac_cv_prog_make_make_set=no
+        export glibcxx_cv_dev_random=no
+        ash configure \
+          CONFIG_SHELL='${stage1.protobusybox}/bin/ash' \
+          SHELL='${stage1.protobusybox}/bin/ash' \
+          CFLAGS=-O2 CXXFLAGS=-O2 \
+          CFLAGS_FOR_TARGET=-O2 CXXFLAGS_FOR_TARGET=-O2 \
+          --with-sysroot=$SYSROOT \
+          --with-native-system-header-dir=/include \
+          --with-build-time-tools=${static-binutils}/bin \
+          --prefix=$out \
+          --with-specs='%{!static:%x{-rpath=$out/lib}}' \
+          --enable-languages=c,c++ \
+          --disable-bootstrap \
+          --disable-libquadmath --disable-decimal-float --disable-fixed-point \
+          --disable-lto \
+          --disable-libgomp \
+          --disable-multilib \
+          --disable-multiarch \
+          --disable-libmudflap \
+          --disable-libssp \
+          --disable-nls \
+          --disable-libitm \
+          --disable-libsanitizer \
+          --disable-cet \
+          --disable-gnu-unique-object \
+          --disable-gcov \
+          --disable-checking \
+          --host x86_64-linux-musl --build x86_64-linux-musl
+      # build:
+        make -j $NPROC
+      # install:
+        make -j $NPROC install
+      # check for build path leaks:
+        ( ! grep -rF $(pwd) $out )
+    '';
+  }