From eded3773fe25666eccf2a79657ce76adbfa46471 Mon Sep 17 00:00:00 2001
From: Davis King <davis@dlib.net>
Date: Wed, 27 Jun 2018 01:56:29 -0400
Subject: [PATCH] Never use anaconda's version of libpng because it's broken.

---
 dlib/CMakeLists.txt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/dlib/CMakeLists.txt b/dlib/CMakeLists.txt
index b80f10756..e753cfd9e 100644
--- a/dlib/CMakeLists.txt
+++ b/dlib/CMakeLists.txt
@@ -405,8 +405,9 @@ if (NOT TARGET dlib)
          # try to find libpng 
          find_package(PNG QUIET)
          # Make sure there isn't something wrong with the version of LIBPNG
-         # installed on this system.  
-         if (PNG_FOUND)
+         # installed on this system.  Also never link to anything from anaconda
+         # since it's probably broken.
+         if (PNG_FOUND AND NOT ("${PNG_INCLUDE_DIR}" MATCHES "(.*)(Ana|ana|mini)conda(.*)"))
             set(CMAKE_REQUIRED_LIBRARIES ${PNG_LIBRARIES})
             CHECK_FUNCTION_EXISTS(png_create_read_struct LIBPNG_IS_GOOD)
          endif()