Use python3 for build scripts

This should have been done with the previous commit.

0001-cmake-Don-t-prefer-python2.7.patch

@@ -0,0 +1,24 @@
+From 1353b7e97319f82ceee621e2e321c3f932c391fa Mon Sep 17 00:00:00 2001
+From: Tom Stellard <tstellar@redhat.com>
+Date: Thu, 6 Sep 2018 17:32:09 -0700
+Subject: [PATCH] cmake: Don't prefer python2.7
+
+---
+ CMakeLists.txt | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 86ca2b3..ef8effa 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -71,7 +71,6 @@ if (COMPILER_RT_STANDALONE_BUILD)
+   endif()
+ 
+   # Find Python interpreter.
+-  set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5)
+   include(FindPythonInterp)
+   if(NOT PYTHONINTERP_FOUND)
+     message(FATAL_ERROR "
+-- 
+1.8.3.1
+

compiler-rt.spec

@@ -9,16 +9,21 @@
 
 Name:		compiler-rt
 Version:	7.0.0
-Release:	0.2.rc%{rc_ver}%{?dist}
+Release:	0.3.rc%{rc_ver}%{?dist}
 Summary:	LLVM "compiler-rt" runtime libraries
 
 License:	NCSA or MIT
 URL:		http://llvm.org
 Source0:	http://llvm.org/releases/%{version}/%{crt_srcdir}.tar.xz
 
+Patch0: 0001-cmake-Don-t-prefer-python2.7.patch
+
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
 BuildRequires:	cmake
+BuildRequires:	python3
+# We need python3-devel for pathfix.py.
+BuildRequires:	python3-devel
 BuildRequires:  llvm-devel = %{version}
 BuildRequires:  llvm-static = %{version}
 
@@ -31,6 +36,8 @@ instrumentation, and Blocks C language extension.
 %prep
 %autosetup -n %{crt_srcdir} -p1
 
+pathfix.py -i %{__python3} -pn .
+
 %build
 mkdir -p _build
 cd _build
@@ -78,6 +85,9 @@ cd _build
 %{_libdir}/clang/%{version}
 
 %changelog
+* Fri Sep 07 2018 Tom Stellard <tstellar@redhat.com> - 7.0.0-0.3.rc1
+- Use python3 for build scripts
+
 * Thu Sep 06 2018 Tom Stellard <tstellar@redhat.com> - 7.0.0-0.2.rc1
 - Drop BuildRequires: python2