gcc-toolchain.sh

package: GCC-Toolchain
version: "%(tag_basename)s"
tag: v7.3.0-alice2
source: https://github.com/alisw/gcc-toolchain
prepend_path:
  "LD_LIBRARY_PATH": "$GCC_TOOLCHAIN_ROOT/lib64"
build_requires:
 - "autotools:(slc6|slc7)"
 - yacc-like
 - make
prefer_system: .*
prefer_system_check: |
  set -e
  which gfortran || { echo "gfortran missing"; exit 1; }
  which cc && test -f $(dirname $(which cc))/c++ && printf "#define GCCVER ((__GNUC__ << 16)+(__GNUC_MINOR__ << 8)+(__GNUC_PATCHLEVEL__))\n#if (GCCVER < 0x070300)\n#error \"System's GCC cannot be used: we need at least GCC 7.X. We are going to compile our own version.\"\n#endif\n" | cc -xc++ - -c -o /dev/null
---
#!/bin/bash -e

unset CXXFLAGS
unset CFLAGS

echo "Building GCC because no compatible version was found on the system. To skip this step, install GCC 4.8 or 4.9, or 5.X (with the exception of 5.0 to 5.2). Make sure you have gfortran installed too."

USE_GOLD=
case $ARCHITECTURE in
  osx*)
    EXTRA_LANGS=',objc,obj-c++'
    MARCH=
  ;;
  *x86-64)
    MARCH='x86_64-unknown-linux-gnu'
  ;;
  *)
    MARCH=
  ;;
esac

rsync -a --exclude='**/.git' --delete --delete-excluded "$SOURCEDIR/" ./

# Binutils
mkdir build-binutils
pushd build-binutils
  ../binutils/configure --prefix="$INSTALLROOT"                \
                        ${MARCH:+--build=$MARCH --host=$MARCH} \
                        ${USE_GOLD:+--enable-gold=yes}         \
                        --enable-ld=default                    \
                        --enable-lto                           \
                        --enable-plugins                       \
                        --enable-threads                       \
                        --disable-nls
  make ${JOBS:+-j$JOBS} MAKEINFO=":"
  make install MAKEINFO=":"
  hash -r
popd

# Test program
cat > test.c <<EOF
#include <string.h>
#include <stdio.h>
int main(void) { printf("The answer is 42.\n"); }
EOF

# GCC and deps
pushd gcc
  for EXT in mpfr gmp mpc isl cloog; do
    pushd $EXT
      autoreconf -ivf
    popd
  done
popd

mkdir build-gcc
pushd build-gcc
  ../gcc/configure --prefix="$INSTALLROOT"                          \
                   ${MARCH:+--build=$MARCH --host=$MARCH}           \
                   --enable-languages="c,c++,fortran${EXTRA_LANGS}" \
                   --disable-multilib                               \
                   ${USE_GOLD:+--enable-gold=yes}                   \
                   --enable-ld=default                              \
                   --enable-lto                                     \
                   --disable-nls
  make ${JOBS+-j $JOBS} bootstrap-lean MAKEINFO=":"
  make install MAKEINFO=":"
  hash -r

  # GCC creates c++, but not cc
  ln -nfs gcc "$INSTALLROOT/bin/cc"
  rm -rf "$INSTALLROOT/lib/pkg-config"

  # Provide a custom specs file if needed
  #SPEC="$(dirname $(gcc -print-libgcc-file-name))/specs"
  #gcc -dumpspecs > $SPEC
  #perl -pe '++$x and next if /^\*link:/; $x-- and s/^(.*)$/\1 -rpath-link \/lib64:\/lib/ if $x' $SPEC > $SPEC.0
  #mv $SPEC.0 $SPEC

  rm -f $INSTALLROOT/lib/*.la \
        $INSTALLROOT/lib64/*.la
popd

# From now on, use own linker and GCC
export PATH="$INSTALLROOT/bin:$PATH"
export LD_LIBRARY_PATH="$INSTALLROOT/lib64:$INSTALLROOT/lib:$LD_LIBRARY_PATH"
hash -r

# Test own linker and own GCC
which ld
which g++
g++ test.c
./a.out
rm -f a.out

# GDB
mkdir build-gdb
pushd build-gdb
  ../gdb/configure --prefix="$INSTALLROOT"                \
                   ${MARCH:+--build=$MARCH --host=$MARCH} \
                   --without-python                       \
                   --disable-multilib
  make ${JOBS:+-j$JOBS} MAKEINFO=":"
  make install MAKEINFO=":"
  hash -r
  rm -f $INSTALLROOT/lib/*.la
popd

# If fixincludes is not desired, see:
# http://ewontfix.com/12/
# https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/eclass/toolchain.eclass?view=markup&sortby=log#l1524

# Modulefile
MODULEDIR="$INSTALLROOT/etc/modulefiles"
MODULEFILE="$MODULEDIR/$PKGNAME"
mkdir -p "$MODULEDIR"
cat > "$MODULEFILE" <<EoF
#%Module1.0
proc ModulesHelp { } {
  global version
  puts stderr "ALICE Modulefile for $PKGNAME $PKGVERSION-@@PKGREVISION@$PKGHASH@@"
}
set version $PKGVERSION-@@PKGREVISION@$PKGHASH@@
module-whatis "ALICE Modulefile for $PKGNAME $PKGVERSION-@@PKGREVISION@$PKGHASH@@"
# Dependencies
module load BASE/1.0
# Load Toolchain module for the current platform. Fallback on this one
regexp -- "^(.*)/.*\$" [module-info name] dummy mod_name
if { "\$mod_name" == "GCC-Toolchain" } {
  if { [regexp {^/cvmfs.*} $ModulesCurrentModulefile dummy1 dummy2] } {
    module load Toolchain/GCC-${PKGVERSION//-*}
    if { [is-loaded Toolchain] } { continue }
  }
  set base_path \$::env(BASEDIR)
} else {
  # Loading Toolchain: autodetect prefix
  set base_path [string map "/etc/toolchain/modulefiles/ /" \$ModulesCurrentModulefile]
  set base_path [string map "/Modules/modulefiles/ /" \$base_path]
  regexp -- "^(.*)/.*/.*\$" \$base_path dummy base_path
  set base_path \$base_path/Packages
}
# Our environment
set GCC_TOOLCHAIN_ROOT \$base_path/GCC-Toolchain/\$version
prepend-path LD_LIBRARY_PATH \$GCC_TOOLCHAIN_ROOT/lib
prepend-path LD_LIBRARY_PATH \$GCC_TOOLCHAIN_ROOT/lib64
prepend-path PATH \$GCC_TOOLCHAIN_ROOT/bin
EoF