cmake exec_program(RETURN_VALUE) examples

apache/avro lang/c/cmake_pretty.cmake :26 

	exec_program(indent
                 ARGS ${INDENT_OPTS} ${CMAKE_CURRENT_SOURCE_DIR}/${dir}/*.[c,h]
                 OUTPUT_VARIABLE indent_output
                 RETURN_VALUE ret)

Exiv2/exiv2 cmake/exiv2_uninstall.cmake :10 

EXEC_PROGRAM(
  "${CMAKE_COMMAND}" ARGS "-E remove \"${file}\""
  OUTPUT_VARIABLE rm_out
  RETURN_VALUE rm_retval
  )

AcademySoftwareFoundation/openvdb cmake/Uninstall.cmake :31 

exec_program(
   ${CMAKE_COMMAND} ARGS "-E remove ${INSTALLED_FILE}"
   OUTPUT_VARIABLE stdout
   RETURN_VALUE RESULT
)

raysan5/raylib cmake/Uninstall.cmake :10 

exec_program(
  "@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
  OUTPUT_VARIABLE rm_out
  RETURN_VALUE rm_retval
  )

taglib/taglib cmake/modules/FindCppUnit.cmake :27 

EXEC_PROGRAM(${CPPUNIT_CONFIG_EXECUTABLE} ARGS --cflags RETURN_VALUE _return_VALUE OUTPUT_VARIABLE CPPUNIT_CFLAGS)

taglib/taglib cmake/modules/FindCppUnit.cmake :28 

EXEC_PROGRAM(${CPPUNIT_CONFIG_EXECUTABLE} ARGS --libs RETURN_VALUE _return_VALUE OUTPUT_VARIABLE CPPUNIT_LIBRARIES)

taglib/taglib cmake/modules/FindCppUnit.cmake :29 

EXEC_PROGRAM(${CPPUNIT_CONFIG_EXECUTABLE} ARGS --version RETURN_VALUE _return_VALUE OUTPUT_VARIABLE CPPUNIT_INSTALLED_VERSION)

taglib/taglib cmake/modules/FindCppUnit.cmake :53 

EXEC_PROGRAM(${CPPUNIT_CONFIG_EXECUTABLE} ARGS --version RETURN_VALUE _return_VALUE OUTPUT_VARIABLE CPPUNIT_INSTALLED_VERSION)