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file(GLOB_RECURSE PRE_HEADERS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} pre/*.h)
# We need to add the SDK directories on OS X, and perhaps other operating
# systems.
set(gen_cflags)
foreach(gen_include ${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES})
list(APPEND gen_cflags ${CMAKE_INCLUDE_FLAG_C}${gen_include})
endforeach()
foreach(hfile ${PRE_HEADERS})
string(REGEX REPLACE ^pre/ post/ post_hfile ${hfile})
get_filename_component(hdir ${CMAKE_CURRENT_BINARY_DIR}/${post_hfile} PATH)
file(MAKE_DIRECTORY ${hdir})
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${post_hfile}
COMMAND ${CMAKE_C_COMPILER} -std=c99 -E -P
${CMAKE_CURRENT_SOURCE_DIR}/${hfile}
${gen_cflags}
-I${LIBUV_INCLUDE_DIRS}
-o ${CMAKE_CURRENT_BINARY_DIR}/${post_hfile})
list(APPEND POST_HEADERS ${post_hfile})
endforeach()
add_custom_target(unittest-headers DEPENDS ${POST_HEADERS})
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