Add missed CMake include for check_include_file

Issue #2820
12 years ago · bf3264b197
parent 1e9ed14205
commit bf3264b197
1 changed files with 1 additions and 0 deletions
--- a/cmake/OpenCVFindLibsGrfmt.cmake
+++ b/cmake/OpenCVFindLibsGrfmt.cmake
@ -116,6 +116,7 @@ if(WITH_PNG AND NOT IOS)
  else()
    include(FindPNG)
    if(PNG_FOUND)
+      include(CheckIncludeFile)
      check_include_file("${PNG_PNG_INCLUDE_DIR}/png.h"        HAVE_PNG_H)
      check_include_file("${PNG_PNG_INCLUDE_DIR}/libpng/png.h" HAVE_LIBPNG_PNG_H)
      if(HAVE_PNG_H)