# Doesn't build correctly with fPIC
%undefine _hardened_build
# fails to find annobin plugin, as we're building in a seprate
# prefix, and also annobin plugin is built for a newer gcc
%undefine _annotated_build
# libcpp/expr.c triggers format-security

# Build fails in libgcc
%undefine _lto_cflags

# Warnings triggered which interact with code that forces Werror
%global _fortify_level 0

%define _warning_options -Wall

%undefine _missing_build_ids_terminate_build

Summary: C & C++ compilers for SGX enclaves
Name: sgx-compat-gcc8.5.0
Version: 8.5.0
Release: 1%{?dist}
# Sync from native gcc.spec
License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+ and BSD
URL: http://gcc.gnu.org
Source: https://ftp.gnu.org/gnu/gcc/gcc-%{version}/gcc-%{version}.tar.xz
Patch1: 0001-libsanitizer-cherry-pick-9cf13067cb5088626ba7-from-u.patch
Patch2: 0001-libsanitizer-Remove-cyclades-from-libsanitizer.patch
Patch3: gcc8-libtool-no-rpath.patch

BuildRequires: sgx-srpm-macros
BuildRequires: gcc
BuildRequires: gcc-c++
BuildRequires: libmpc-devel

# SGX is a technology that only exists in Intel x86 CPUs
ExclusiveArch: x86_64

%description
This package contains the C & C++ compilers required for reproducible
builds of signed SGX architectural enclaves.

%prep
%autosetup -p1 -n gcc-%{version}

%build
# This older GCC doesn't support newer ABI levels
CFLAGS=$(echo $CFLAGS | sed -e 's/x86-64-v3/x86-64/')
CXXFLAGS=$(echo $CFLAGS | sed -e 's/x86-64-v3/x86-64/')
FFLAGS=$(echo $FFLAGS | sed -e 's/x86-64-v3/x86-64/')
FCFLAGS=$(echo $FCFLAGS | sed -e 's/x86-64-v3/x86-64/')
export CFLAGS CXXFLAGS FFLAGS FCFLAGS

# Disabling all libraries that aren't needed for SGX builds
# Disabling bootstrap since this is not a general system
# compiler, it is just used for SGX architectural enclaves
./configure \
    --prefix=%{_prefix} \
    --libdir=%{_libdir}/%{sgx_triplet} \
    --libexecdir=%{_libexecdir}/%{sgx_triplet} \
    --bindir=%{_bindir} \
    --datadir=%{_datadir} \
    --enable-version-specific-runtime-libs \
    --disable-multilib \
    --disable-bootstrap \
    --enable-languages=c,c++ \
    --without-isl \
    --disable-gcov \
    --disable-libgomp \
    --disable-libmpx \
    --disable-libquadmath \
    --disable-libsanitizer \
    --disable-libssp \
    --disable-libcc1 \
    --disable-libatomic \
    --disable-libitm \
    --disable-werror \
    --program-prefix="%{sgx_triplet}-" \
    --program-suffix="-%{version}" \
    --with-specs='%{!fno-common:%{!fcommon:-fcommon}}'


%make_build

%install
%make_install %{_smp_mflags} 

%define sgx_gcc_libdir %{_libdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}

(
  # Build system created these from %{_includedir}, but
  # we want %{sgx_includedir}, so re-create
  rm -rf %{buildroot}%{_libdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/include-fixed

  cd ./host-x86_64-pc-linux-gnu/fixincludes/

  TARGET_MACHINE=x86_64-pc-linux-gnu \
  target_canonical=x86_64-pc-linux-gnu \
  MACRO_LIST=../gcc/macro_list \
  /bin/sh fixinc.sh \
  %{buildroot}%{sgx_gcc_libdir}/include-fixed/ \
  %{sgx_includedir}/

  # These aren't processed by fixinc.sh, instead created
  # from pieces in the GCC tree, so we can copy them over again
  cp ../gcc/include-fixed/limits.h %{buildroot}%{sgx_gcc_libdir}/include-fixed/
  cp ../gcc/include-fixed/syslimits.h %{buildroot}%{sgx_gcc_libdir}/include-fixed/
)

rm -rf %{buildroot}%{_datadir}
rm -rf %{buildroot}%{_libdir}/gcc/x86_64-pc-linux-gnu/%{version}/plugin
rm -rf %{buildroot}%{_libdir}/gcc/x86_64-pc-linux-gnu/%{version}/install-tools
rm -rf %{buildroot}%{_libdir}/gcc/x86_64-pc-linux-gnu/%{version}/finclude

# Remove binaries with the build-target prefix,
# as they're just duplicating the binaries with
# the %{sgx_triplet} prefix, as we don't require
# them.
rm -f %{buildroot}%{_bindir}/x86_64-pc-linux-gnu-*
# Also don't want unversioned gcov
rm -f %{buildroot}%{_bindir}/%{sgx_triplet}-gcov*

rm -f %{buildroot}%{_libdir}/libstdc++.a
rm -f %{buildroot}%{_libdir}/libstdc++.so*-gdb.py
rm -f %{buildroot}%{_libdir}/libstdc++fs.a
rm -f %{buildroot}%{_libdir}/libsupc++.a

find %{buildroot} -name *.la | xargs rm

# make install is a little confused by the extra level in
# our libdir arg, and puts libgcc_s one level too deep.
# Move it to where it will be found by the -L arg GCC passes
# to the ld program.
mv %{buildroot}%{_libdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{_lib}/libgcc* \
   %{buildroot}%{_libdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/

%files
%license gcc/COPYING* COPYING.RUNTIME
%{_bindir}/%{sgx_triplet}-c++-%{version}
%{_bindir}/%{sgx_triplet}-cpp-%{version}
%{_bindir}/%{sgx_triplet}-g++-%{version}
%{_bindir}/%{sgx_triplet}-gcc-%{version}
%{_bindir}/%{sgx_triplet}-gcc-ar-%{version}
%{_bindir}/%{sgx_triplet}-gcc-nm-%{version}
%{_bindir}/%{sgx_triplet}-gcc-ranlib-%{version}

%dir %{_libdir}/%{sgx_triplet}/gcc
%dir %{_libdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu
%dir %{_libdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}
%{_libdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/*

%dir %{_libexecdir}/%{sgx_triplet}
%dir %{_libexecdir}/%{sgx_triplet}/gcc
%dir %{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/
%dir %{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}
%{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/cc1
%{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/cc1plus
%{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/collect2
%{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/install-tools
%{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/liblto_plugin.so*
%{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/lto-wrapper
%{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/lto1
%{_libexecdir}/%{sgx_triplet}/gcc/x86_64-pc-linux-gnu/%{version}/plugin