Set LD_STAGE0, AR_STAGE0; Remove BR for ghc*

Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com>

ghc-8.2.20-riscv.patch

@@ -0,0 +1,26 @@
+diff --git a/aclocal.m4 b/aclocal.m4
+index d5078de..cf0a0fe 100644
+--- a/aclocal.m4
++++ b/aclocal.m4
+@@ -216,7 +216,7 @@ AC_DEFUN([FPTOOLS_SET_HASKELL_PLATFORM_VARS],
+         mipsel)
+             test -z "[$]2" || eval "[$]2=ArchMipsel"
+             ;;
+-        hppa|hppa1_1|ia64|m68k|rs6000|s390|s390x|sh4|vax)
++        hppa|hppa1_1|ia64|m68k|riscv32|riscv64|rs6000|s390|s390x|sh4|vax)
+             test -z "[$]2" || eval "[$]2=ArchUnknown"
+             ;;
+         *)
+@@ -1895,6 +1895,12 @@ case "$1" in
+   powerpc*)
+     $2="powerpc"
+     ;;
++  riscv64*)
++    $2="riscv64"
++    ;;
++  riscv|riscv32*)
++    $2="riscv32"
++    ;;
+   rs6000)
+     $2="rs6000"
+     ;;

ghc.spec

@@ -1,12 +1,20 @@
 # disable prof, docs, perf build
 # NB This SHOULD be disabled 'bcond_with' for all koji production builds
+%ifnarch riscv64
 %bcond_with quickbuild
+%else
+%bcond_without quickbuild
+%endif
 
 # to handle RCs
 %global ghc_release %{version}
 
 # make sure ghc libraries' ABI hashes unchanged
+%ifnarch riscv64
 %bcond_without abicheck
+%else
+%bcond_with abicheck
+%endif
 
 # skip testsuite (takes time and not really being used)
 %bcond_with testsuite
@@ -38,7 +46,7 @@ Version: 8.2.2
 # - release can only be reset if *all* library versions get bumped simultaneously
 #   (sometimes after a major release)
 # - minor release numbers for a branch should be incremented monotonically
-Release: 70%{?dist}
+Release: 70.2.riscv64%{?dist}
 Summary: Glasgow Haskell Compiler
 
 License: BSD and HaskellReport
@@ -74,23 +82,26 @@ Patch26: ghc-Debian-no-missing-haddock-file-warning.patch
 Patch27: ghc-Debian-reproducible-tmp-names.patch
 Patch28: ghc-Debian-x32-use-native-x86_64-insn.patch
 
+# RISC-V support (already upstreamed and available in newer versions)
+Patch40: ghc-8.2.20-riscv.patch
+
 # fedora ghc has been bootstrapped on
 # %%{ix86} x86_64 ppc ppc64 armv7hl s390 s390x ppc64le aarch64
 # and retired arches: alpha sparcv9 armv5tel
 # see also deprecated ghc_arches defined in /etc/rpm/macros.ghc-srpm by redhat-rpm-macros
 
-BuildRequires: ghc-compiler
+#BuildRequires: ghc-compiler
 # for ABI hash checking
 %if %{with abicheck}
-BuildRequires: ghc
+#BuildRequires: ghc
 %endif
-BuildRequires: ghc-rpm-macros-extra >= 1.8
-BuildRequires: ghc-binary-devel
-BuildRequires: ghc-bytestring-devel
-BuildRequires: ghc-containers-devel
-BuildRequires: ghc-directory-devel
-BuildRequires: ghc-pretty-devel
-BuildRequires: ghc-process-devel
+#BuildRequires: ghc-rpm-macros-extra >= 1.8
+#BuildRequires: ghc-binary-devel
+#BuildRequires: ghc-bytestring-devel
+#BuildRequires: ghc-containers-devel
+#BuildRequires: ghc-directory-devel
+#BuildRequires: ghc-pretty-devel
+#BuildRequires: ghc-process-devel
 BuildRequires: gmp-devel
 BuildRequires: libffi-devel
 # for terminfo
@@ -293,6 +304,10 @@ rm -r libffi-tarballs
 %patch27 -p1 -b .orig
 %patch28 -p1 -b .orig
 
+%ifarch riscv64
+%patch40 -p1 -b .riscv64
+%endif
+
 %global gen_contents_index gen_contents_index.orig
 %if %{with docs}
 if [ ! -f "libraries/%{gen_contents_index}" ]; then
@@ -334,8 +349,8 @@ EOF
 #EXTRA_HC_OPTS=-debug
 
 %build
-# for patch12
-%ifarch armv7hl
+# for patch12 and patch40
+%ifarch armv7hl riscv64
 autoreconf
 %else
 # for patch5
@@ -347,6 +362,9 @@ export CFLAGS="${CFLAGS:-%optflags}"
 export LDFLAGS="${LDFLAGS:-%{?__global_ldflags}}"
 # for ghc >= 8.2
 export CC=%{_bindir}/gcc
+export CC_STAGE0=%{_bindir}/gcc
+export AR_STAGE0=%{_bindir}/ar
+export LD_STAGE0=%{_bindir}/ld
 # * %%configure induces cross-build due to different target/host/build platform names
 ./configure --prefix=%{_prefix} --exec-prefix=%{_exec_prefix} \
   --bindir=%{_bindir} --sbindir=%{_sbindir} --sysconfdir=%{_sysconfdir} \
@@ -354,7 +372,9 @@ export CC=%{_bindir}/gcc
   --libexecdir=%{_libexecdir} --localstatedir=%{_localstatedir} \
   --sharedstatedir=%{_sharedstatedir} --mandir=%{_mandir} \
   --docdir=%{_docdir}/ghc \
+%ifarch %{ghc_llvm_archs}
   --with-llc=%{_bindir}/llc-%{llvm_major} --with-opt=%{_bindir}/opt-%{llvm_major} \
+%endif
 %if 0%{?fedora} || 0%{?rhel} > 6
   --with-system-libffi \
 %endif
@@ -574,7 +594,7 @@ fi
 %{ghclibdir}/bin/ghc-iserv-prof
 %endif
 %{ghclibdir}/bin/runghc
-%ifnarch s390 s390x %{mips}
+%ifnarch s390 s390x %{mips} riscv64
 %{ghclibdir}/bin/ghc-split
 %endif
 %{ghclibdir}/bin/hp2ps
@@ -640,6 +660,9 @@ fi
 
 
 %changelog
+* Wed Oct 24 2018 David Abdurachmanov <david.abdurachmanov@gmail.com> - 8.2.2-70.2.riscv64
+- 1st attempt to bootstrap unregistered build for RISC-V (riscv64)
+
 * Wed Oct 17 2018 Jens Petersen <petersen@redhat.com> - 8.2.2-70
 - backport quickbuild config from 8.4 module and extend to perf_build
 - disable -Wall on s390x like in 8.4 module to silence warning flood