From 1be4a16ec6db0708291758afd080905ba7d48849 Mon Sep 17 00:00:00 2001
From: xoviat <xoviat@users.noreply.github.com>
Date: Sun, 28 Jan 2018 16:07:41 -0600
Subject: [PATCH 1/4] CMake: enable interprocedural optimization

---
 CMakeLists.txt | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5789119a..d70790f44 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,8 @@
 ## Author: Hank Anderson <hank@statease.com>
 ##
 
-cmake_minimum_required(VERSION 2.8.5)
+cmake_minimum_required(VERSION 3.9) # CMP0069 NEW
+include(CheckIPOSupported)
 project(OpenBLAS C ASM)
 set(OpenBLAS_MAJOR_VERSION 0)
 set(OpenBLAS_MINOR_VERSION 3)
@@ -147,6 +148,12 @@ endif()
 # add objects to the openblas lib
 add_library(${OpenBLAS_LIBNAME} ${LA_SOURCES} ${LAPACKE_SOURCES} ${RELA_SOURCES} ${TARGET_OBJS} ${OpenBLAS_DEF_FILE})
 
+check_ipo_supported(RESULT IPO_SUPPORTED)
+if(IPO_SUPPORTED)
+  message(STATUS "Building with link-time code generation")
+  set_property(TARGET ${OpenBLAS_LIBNAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+endif()
+
 # Android needs to explicitly link against libm
 if(ANDROID)
   target_link_libraries(${OpenBLAS_LIBNAME} m)

From 2b84c3ecbc592c426d3cd60a34a7a09eeffe4fb6 Mon Sep 17 00:00:00 2001
From: xoviat <xoviat@users.noreply.github.com>
Date: Sun, 28 Jan 2018 16:35:50 -0600
Subject: [PATCH 2/4] CMake: add backward compatibility

---
 CMakeLists.txt | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d70790f44..4f933dae2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,8 +2,8 @@
 ## Author: Hank Anderson <hank@statease.com>
 ##
 
-cmake_minimum_required(VERSION 3.9) # CMP0069 NEW
-include(CheckIPOSupported)
+cmake_minimum_required(VERSION 2.8.5)
+
 project(OpenBLAS C ASM)
 set(OpenBLAS_MAJOR_VERSION 0)
 set(OpenBLAS_MINOR_VERSION 3)
@@ -148,10 +148,14 @@ endif()
 # add objects to the openblas lib
 add_library(${OpenBLAS_LIBNAME} ${LA_SOURCES} ${LAPACKE_SOURCES} ${RELA_SOURCES} ${TARGET_OBJS} ${OpenBLAS_DEF_FILE})
 
-check_ipo_supported(RESULT IPO_SUPPORTED)
-if(IPO_SUPPORTED)
-  message(STATUS "Building with link-time code generation")
-  set_property(TARGET ${OpenBLAS_LIBNAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+if(POLICY CMP0990)
+  cmake_policy(SET CMP0990 NEW)
+  include(CheckIPOSupported)
+  check_ipo_supported(RESULT IPO_SUPPORTED)
+  if(IPO_SUPPORTED)
+    message(STATUS "Building with link-time code generation")
+    set_property(TARGET ${OpenBLAS_LIBNAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+  endif()
 endif()
 
 # Android needs to explicitly link against libm

From 2d107cd3966f9a12c45002883d3b1cea3f2101d7 Mon Sep 17 00:00:00 2001
From: xoviat <xoviat@users.noreply.github.com>
Date: Tue, 30 Jan 2018 14:49:57 -0600
Subject: [PATCH 3/4] CMake: check IPO supported for Fortran as well

---
 CMakeLists.txt | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f933dae2..d39c54c8f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,6 @@
 ##
 
 cmake_minimum_required(VERSION 2.8.5)
-
 project(OpenBLAS C ASM)
 set(OpenBLAS_MAJOR_VERSION 0)
 set(OpenBLAS_MINOR_VERSION 3)
@@ -151,7 +150,7 @@ add_library(${OpenBLAS_LIBNAME} ${LA_SOURCES} ${LAPACKE_SOURCES} ${RELA_SOURCES}
 if(POLICY CMP0990)
   cmake_policy(SET CMP0990 NEW)
   include(CheckIPOSupported)
-  check_ipo_supported(RESULT IPO_SUPPORTED)
+  check_ipo_supported(RESULT IPO_SUPPORTED LANGUAGES C Fortran)
   if(IPO_SUPPORTED)
     message(STATUS "Building with link-time code generation")
     set_property(TARGET ${OpenBLAS_LIBNAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)

From 56df26fe8210f7b47bd29c8d305babd333afd68e Mon Sep 17 00:00:00 2001
From: xoviat <xoviat@users.noreply.github.com>
Date: Tue, 30 Jan 2018 14:50:28 -0600
Subject: [PATCH 4/4] CMake: update message

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d39c54c8f..9e3172a5f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -152,7 +152,7 @@ if(POLICY CMP0990)
   include(CheckIPOSupported)
   check_ipo_supported(RESULT IPO_SUPPORTED LANGUAGES C Fortran)
   if(IPO_SUPPORTED)
-    message(STATUS "Building with link-time code generation")
+    message(STATUS "Building with interprocedural optimization")
     set_property(TARGET ${OpenBLAS_LIBNAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
   endif()
 endif()