libpng-1.6.37-e2k.patch

From d9ba6ea04880e0fcbc549bc8b24456ea71540c8c Mon Sep 17 00:00:00 2001
From: Ilya Kurdyukov <jpegqs@gmail.com>
Date: Wed, 7 Apr 2021 20:37:27 +0700
Subject: [PATCH] libpng-1.6.37 e2k support

To enable SIMD code use "cmake -DPNG_INTEL_SSE=on"
or "./configure --enable-intel-sse"
---
 CMakeLists.txt | 3 ++-
 configure      | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6451fcf..739ee7a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -122,7 +122,8 @@ endif()
 
 # set definitions and sources for intel
 if(CMAKE_SYSTEM_PROCESSOR MATCHES "^i?86" OR
-   CMAKE_SYSTEM_PROCESSOR MATCHES "^x86_64*")
+   CMAKE_SYSTEM_PROCESSOR MATCHES "^x86_64*" OR
+   CMAKE_SYSTEM_PROCESSOR STREQUAL "e2k")
   set(PNG_INTEL_SSE_POSSIBLE_VALUES on off)
   set(PNG_INTEL_SSE "on" CACHE STRING "Enable INTEL_SSE optimizations:
      off: disable the optimizations")
diff --git a/configure b/configure
index 1b2c463..a612e0e 100755
--- a/configure
+++ b/configure
@@ -13533,7 +13533,7 @@ $as_echo "#define PNG_ARM_NEON_OPT 0" >>confdefs.h
 $as_echo "#define PNG_MIPS_MSA_OPT 0" >>confdefs.h
 
               ;;
-            i?86|x86_64)
+            i?86|x86_64|e2k)
               enable_intel_sse=yes
 
 $as_echo "#define PNG_INTEL_SSE_OPT 1" >>confdefs.h
@@ -13692,7 +13692,7 @@ fi
 # fallback if a future host CPU does not match 'x86*')
  if test "$enable_intel_sse" != 'no' &&
     case "$host_cpu" in
-      i?86|x86_64) :;;
+      i?86|x86_64|e2k) :;;
       *)    test "$enable_intel_sse" != '';;
     esac; then
   PNG_INTEL_SSE_TRUE=
-- 
2.17.1