From f01be3bf2e6d80a3bc4996762d8ed9bcce407851 Mon Sep 17 00:00:00 2001
From: Mikhail Novosyolov <m.novosyolov@rosalinux.ru>
Date: Wed, 1 Apr 2020 20:56:28 +0300
Subject: [PATCH] attach experimental parts of libc++ (TODO: probably we need
 to depends sctrictly from the version of libc++ against which we were built
 because experimental aBI is not stable)

---
 libreoffice.spec | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libreoffice.spec b/libreoffice.spec
index 435b839..ddfbdf2 100644
--- a/libreoffice.spec
+++ b/libreoffice.spec
@@ -103,6 +103,8 @@ BuildRequires:	ccache
 BuildRequires:	clang
 BuildRequires:	clang-devel
 BuildRequires:	libcxx-devel
+# libc++experimental is static only
+BuildRequires:	libcxx-static-devel
 BuildRequires:	libcxxabi-devel
 %endif
 BuildRequires:	desktop-file-utils
@@ -2940,6 +2942,11 @@ chmod 777 ~/tmp
 # 4.4.1.2 specific
 chmod +x bin/unpack-sources
 
+%if %{with clang}
+grep -Irl 'include <string_view>' | \
+	sed -i -E -e 's,include[[:blank:]]([[:blank:]])*<string_view>,include <experimental/string_view>,g'
+%endif
+
 %build
 # path to external tarballs
 EXTSRCDIR=`dirname %{SOURCE0}`
@@ -2968,7 +2975,7 @@ export CXXFLAGS="$CXXFLAGS -stdlib=libc++ -nostdinc++ -I/usr/include/c++/v1 -Wno
 # https://github.com/TRIQS/triqs/issues/523#issuecomment-351960463
 export CXXFLAGS="$CXXFLAGS -D_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR"
 %clang_gcc_wrapper
-export LIBCCX_LIBS="-lc++ -lc++abi"
+export LIBCCX_LIBS="-lc++ -lc++abi -lc++experimental"
 export CPPUNIT_LIBS="-lcppunit"
 install -m0755 %{SOURCE80} "local_bin/clang++wr"
 sed -i -e "s,/usr/bin/clang++,${PWD}/local_bin/clang++wr,g" "local_bin/clang++"