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Add timeout to execute_process() in CMAKE_DETERMINE_COMPILER_ID(). 

In CMAKE_DETERMINE_COMPILER_ID_VENDOR() the compiler is called with various
arguments. In some cases, this can make the compiler hang and wait
forever for input (e.g. "as -v"). That's why add an timeout
so it terminates finally. 10 seconds should be more than enough,
this is the time it takes to startup the compiler, which is
usually quite fast.

Alex
This commit is contained in:
Alex Neundorf 2010-08-17 21:40:45 +02:00
parent ab90916638
commit e6c9bc267b
1 changed files with 10 additions and 3 deletions
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7
Modules/CMakeDetermineCompilerId.cmake
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@ -283,6 +283,7 @@ FUNCTION(CMAKE_DETERMINE_COMPILER_ID_VENDOR lang)
WORKING_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR} WORKING_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR}
OUTPUT_VARIABLE output ERROR_VARIABLE output OUTPUT_VARIABLE output ERROR_VARIABLE output
RESULT_VARIABLE result RESULT_VARIABLE result
TIMEOUT 10
) )
IF("${output}" MATCHES "${regex}") IF("${output}" MATCHES "${regex}")
FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
@ -290,10 +291,16 @@ FUNCTION(CMAKE_DETERMINE_COMPILER_ID_VENDOR lang)
"matched \"${regex}\":\n${output}") "matched \"${regex}\":\n${output}")
SET(CMAKE_${lang}_COMPILER_ID "${vendor}" PARENT_SCOPE) SET(CMAKE_${lang}_COMPILER_ID "${vendor}" PARENT_SCOPE)
BREAK() BREAK()
ELSE()
IF("${result}" MATCHES "timeout")
FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" "
"terminated after 10 s due to timeout.")
ELSE() ELSE()
FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" " "Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" "
"did not match \"${regex}\":\n${output}") "did not match \"${regex}\":\n${output}")
ENDIF() ENDIF()
ENDIF()
ENDFOREACH() ENDFOREACH()
ENDFUNCTION(CMAKE_DETERMINE_COMPILER_ID_VENDOR) ENDFUNCTION(CMAKE_DETERMINE_COMPILER_ID_VENDOR)