gentoo-overlay/sci-physics/root/files/root-6.12.04-z3.patch

From 4445e05660493841b5fb683c7e8a8dc6c08564ac Mon Sep 17 00:00:00 2001
From: Guilherme Amadio <amadio@cern.ch>
Date: Mon, 18 Dec 2017 11:49:55 +0100
Subject: [PATCH] Only look for Z3 if necessary

---
 interpreter/llvm/src/tools/clang/CMakeLists.txt | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/interpreter/llvm/src/tools/clang/CMakeLists.txt b/interpreter/llvm/src/tools/clang/CMakeLists.txt
index 2667b1d689..a1559d9b15 100644
--- a/interpreter/llvm/src/tools/clang/CMakeLists.txt
+++ b/interpreter/llvm/src/tools/clang/CMakeLists.txt
@@ -186,8 +186,6 @@ if (LIBXML2_FOUND)
   set(CLANG_HAVE_LIBXML 1)
 endif()
 
-find_package(Z3 4.5)
-
 include(CheckIncludeFile)
 check_include_file(sys/resource.h CLANG_HAVE_RLIMITS)
 
@@ -381,11 +379,8 @@ if(NOT CLANG_ENABLE_STATIC_ANALYZER AND (CLANG_ENABLE_ARCMT OR CLANG_ANALYZER_BU
 endif()
 
 if(CLANG_ANALYZER_BUILD_Z3)
-  if(Z3_FOUND)
-    set(CLANG_ANALYZER_WITH_Z3 1)
-  else()
-    message(FATAL_ERROR "Cannot find Z3 header file or shared library")
-  endif()
+  find_package(Z3 4.5 REQUIRED)
+  set(CLANG_ANALYZER_WITH_Z3 1)
 endif()
 
 if(CLANG_ENABLE_ARCMT)
-- 
2.15.1