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include(FindPkgConfig OPTIONAL)
macro(_internal_message msg)
if(NOT ${_is_quiet})
message("${msg}")
endif()
endmacro()
macro(check_lib var lib)
set(_is_required 0)
set(_is_quiet 0)
set(_arg_list ${ARGN})
foreach(_arg ${ARGN})
if(_arg STREQUAL "REQUIRED")
list(REMOVE_ITEM _arg_list "REQUIRED")
set(_is_required 1)
endif()
if(_arg STREQUAL "QUIET")
list(REMOVE_ITEM _arg_list "QUIET")
set(_is_quiet 1)
endif()
endforeach()
if(PKG_CONFIG_FOUND AND NOT ${var}_FOUND)
string(TOLOWER ${lib} lower_lib)
pkg_search_module(${var} QUIET ${lower_lib})
endif()
if(${var}_FOUND)
include_directories(${${var}_INCLUDE_DIRS})
# Make sure include directories for headers found using find_path below
# are re-added when reconfiguring
include_directories(${${var}_INCLUDE})
_internal_message("${lib} found")
else()
find_library(${var} ${lib})
if(_arg_list)
find_path(${var}_INCLUDE ${_arg_list})
else()
set(${var}_INCLUDE FALSE)
endif()
if(${var} AND ${var}_INCLUDE)
include_directories(${${var}_INCLUDE})
_internal_message("${lib} found")
set(${var}_FOUND 1 CACHE INTERNAL "")
else()
if(_is_required)
message(FATAL_ERROR "${lib} is required but not found")
else()
_internal_message("${lib} not found")
endif()
endif()
endif()
endmacro()
macro(check_libav)
if(PKG_CONFIG_FOUND)
pkg_check_modules(LIBAV libavcodec>=53.35.0 libavformat>=53.21.0
libswscale>=2.1.0 libavutil>=51.22.1)
else()
message("pkg-config is required to check for libav")
endif()
if(LIBAV_FOUND)
message("libav found, enabling AVI frame dumps")
add_definitions(-DHAVE_LIBAV)
include_directories(${LIBAV_INCLUDE_DIRS})
else()
message("libav not found, disabling AVI frame dumps")
endif()
endmacro()
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