How can I redirect the output of the CMake “execute_process” command to STDOUT in real-time?
I am working on a project that needs to execute a system process from a CMake script that may take a while to run. The problem is the entire time the process is running I get no feedback about whether it is succeeding or not. Since the process may take a few minutes to run it may appear as though it froze even though it is still silently working.
At the end of the process I can get the output in a CMake variable and print all of the things that happened during that time:
execute_process(COMMAND some system command
OUTPUT_VARIABLE command_output
)
# ... nothing happens for a few minutes while the process executes
# All of the output from the past few minutes is printed all at once.
message(STATUS ${command_output})
It would be much nicer if I could just redirect the process output directly to STDOUT so I could see output of the process while it is executing... Is there any way to do this?
cmake io system stdout io-redirection
asked Nov 16 '18 at 3:25
tjwrona1992tjwrona1992
3,92421647
add a comment |
I am working on a project that needs to execute a system process from a CMake script that may take a while to run. The problem is the entire time the process is running I get no feedback about whether it is succeeding or not. Since the process may take a few minutes to run it may appear as though it froze even though it is still silently working.
At the end of the process I can get the output in a CMake variable and print all of the things that happened during that time:
execute_process(COMMAND some system command
OUTPUT_VARIABLE command_output
)
# ... nothing happens for a few minutes while the process executes
# All of the output from the past few minutes is printed all at once.
message(STATUS ${command_output})
It would be much nicer if I could just redirect the process output directly to STDOUT so I could see output of the process while it is executing... Is there any way to do this?
cmake io system stdout io-redirection
asked Nov 16 '18 at 3:25
tjwrona1992tjwrona1992
3,92421647
Simpleexecute_process(COMMAND some system command)without additional options will use standard output and error streams. Have you tried that?
– Tsyvarev
Nov 16 '18 at 7:56
add a comment |
I am working on a project that needs to execute a system process from a CMake script that may take a while to run. The problem is the entire time the process is running I get no feedback about whether it is succeeding or not. Since the process may take a few minutes to run it may appear as though it froze even though it is still silently working.
At the end of the process I can get the output in a CMake variable and print all of the things that happened during that time:
execute_process(COMMAND some system command
OUTPUT_VARIABLE command_output
)
# ... nothing happens for a few minutes while the process executes
# All of the output from the past few minutes is printed all at once.
message(STATUS ${command_output})
It would be much nicer if I could just redirect the process output directly to STDOUT so I could see output of the process while it is executing... Is there any way to do this?
cmake io system stdout io-redirection
asked Nov 16 '18 at 3:25
tjwrona1992tjwrona1992
3,92421647
I am working on a project that needs to execute a system process from a CMake script that may take a while to run. The problem is the entire time the process is running I get no feedback about whether it is succeeding or not. Since the process may take a few minutes to run it may appear as though it froze even though it is still silently working.
At the end of the process I can get the output in a CMake variable and print all of the things that happened during that time:
execute_process(COMMAND some system command
OUTPUT_VARIABLE command_output
)
# ... nothing happens for a few minutes while the process executes
# All of the output from the past few minutes is printed all at once.
message(STATUS ${command_output})
It would be much nicer if I could just redirect the process output directly to STDOUT so I could see output of the process while it is executing... Is there any way to do this?
cmake io system stdout io-redirection
cmake io system stdout io-redirection
asked Nov 16 '18 at 3:25
tjwrona1992tjwrona1992
3,92421647
asked Nov 16 '18 at 3:25
tjwrona1992tjwrona1992
3,92421647
asked Nov 16 '18 at 3:25
tjwrona1992tjwrona1992
3,92421647
asked Nov 16 '18 at 3:25
tjwrona1992tjwrona1992
3,92421647
asked Nov 16 '18 at 3:25
tjwrona1992tjwrona1992
3,92421647
3,92421647
Simpleexecute_process(COMMAND some system command)without additional options will use standard output and error streams. Have you tried that?
– Tsyvarev
Nov 16 '18 at 7:56
add a comment |
Simpleexecute_process(COMMAND some system command)without additional options will use standard output and error streams. Have you tried that?
– Tsyvarev
Nov 16 '18 at 7:56
Simple
execute_process(COMMAND some system command) without additional options will use standard output and error streams. Have you tried that?– Tsyvarev
Nov 16 '18 at 7:56
Simple
execute_process(COMMAND some system command) without additional options will use standard output and error streams. Have you tried that?– Tsyvarev
Nov 16 '18 at 7:56
add a comment |
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Simple
execute_process(COMMAND some system command)without additional options will use standard output and error streams. Have you tried that?– Tsyvarev
Nov 16 '18 at 7:56