Fix boost LDFLAGS (libdir) on RISC-V (riscv64)

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

fix-boost-riscv64-libdir.patch

@@ -0,0 +1,13 @@
+diff --git a/m4/ax_boost_base.m4 b/m4/ax_boost_base.m4
+index 129c248..8f5acdf 100644
+--- a/m4/ax_boost_base.m4
++++ b/m4/ax_boost_base.m4
+@@ -95,7 +95,7 @@ if test "x$want_boost" = "xyes"; then
+       x86_64)
+         libsubdirs="lib64 libx32 lib lib64"
+         ;;
+-      ppc64|s390x|sparc64|aarch64|ppc64le)
++      ppc64|s390x|sparc64|aarch64|ppc64le|riscv64)
+         libsubdirs="lib64 lib lib64 ppc64le"
+         ;;
+     esac

source-highlight.spec

@@ -1,14 +1,20 @@
 Summary: Produces a document with syntax highlighting
 Name: source-highlight
 Version: 3.1.8
-Release: 23%{?dist}
+Release: 23.0.riscv64%{?dist}
 License: GPLv3+
 Source0: ftp://ftp.gnu.org/gnu/src-highlite/%{name}-%{version}.tar.gz
 Source1: ftp://ftp.gnu.org/gnu/src-highlite/%{name}-%{version}.tar.gz.sig
+Patch0: fix-boost-riscv64-libdir.patch
 URL: http://www.gnu.org/software/src-highlite/
 BuildRequires: bison, flex, boost-devel
 BuildRequires: help2man, ctags, chrpath, pkgconfig(bash-completion)
 BuildRequires: gcc, gcc-c++
+%ifarch riscv64
+BuildRequires: autoconf
+BuildRequires: automake
+BuildRequires: libtool
+%endif
 Requires: ctags
 
 %description
@@ -30,8 +36,15 @@ Development files for source-highlight
 
 %prep
 %setup -q
+%ifarch riscv64
+%patch -p1 -b .orig
+%endif
 
 %build
+%ifarch riscv64
+autoreconf -fiv
+%endif
+
 %configure --disable-static \
            --with-boost-regex=boost_regex
 %make_build
@@ -79,6 +92,9 @@ rmdir $RPM_BUILD_ROOT%{_sysconfdir}/bash_completion.d
 %{_includedir}/srchilite/*.h
 
 %changelog
+* Wed Feb 20 2019 David Abdurachmanov <david.abdurachmanov@gmail.com> - 3.1.8-23.0.riscv64
+- Fix boost LDFLAGS (libdir) for RISC-V (riscv64)
+
 * Mon Feb 18 2019 Adrian Reber <adrian@lisas.de> - 3.1.8-23
 - Require boost-devel in the source-highlight-devel package (#1638029)