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0013846

CMake

(No Category)

public

2013-01-11 20:23

2016-06-10 14:31

Reporter

szx

Assigned To

Kitware Robot

Priority

normal

Severity

minor

Reproducibility

have not tried

Status

closed

Resolution

moved

Platform

OS Version

Product Version

Target Version

Fixed in Version

Summary

0013846: Custom commands not working when comamnd output used in another directory

Description

At least for the Unix Makefile generator (haven't tried others) custom commands are not called when their output file is specified as a source file for a target defined in the parent directory. As soon as I move both add_custom_command() and the target to the same file, everything works fine.

Steps To Reproduce

============ Case 1 =============

1. Create CMakeLists.txt with the following contents

cmake_minimum_required(VERSION 2.8.9)
project(test)

add_subdirectory("src")
set_source_files_properties("src/test.c" PROPERTIES GENERATED TRUE)
add_executable(test "src/test.c")

2. Create a directory called "src" and another CMakeLists.txt in it:

add_custom_command(
    OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/test.c"
    COMMAND echo "int main\$\$ \\{\\}" > "${CMAKE_CURRENT_SOURCE_DIR}/test.c"
    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
)

3. You will get the following error from make:

test1-build$ make
make[2]: *** No rule to make target `src/test.c', needed by `CMakeFiles/test.dir/src/test.c.o'. Stop.
make[1]: *** [CMakeFiles/test.dir/all] Error 2
make: *** [all] Error 2

============ Case 2 =============

1. Create a CMakeLists.txt with the following contents:

cmake_minimum_required(VERSION 2.8.9)
project(test)

file(MAKE_DIRECTORY "src")
add_custom_command(
    OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/src/test.c"
    COMMAND echo "int main\$\$ \\{\\}" > "${CMAKE_CURRENT_SOURCE_DIR}/src/test.c"
    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
)
set_source_files_properties("src/test.c" PROPERTIES GENERATED TRUE)
add_executable(test "src/test.c")

2. make will complete without errors:

test2-build$ make
[ 50%] Generating /home/asd/Desktop/fuck-cmake/test2/src/test.c
Scanning dependencies of target test
[100%] Building C object CMakeFiles/test.dir/src/test.c.o
Linking C executable test
[100%] Built target test

Tags

No tags attached.

Attached Files

test.zip [^] (1,390 bytes) 2013-01-11 20:23

Relationships

Notes
(0042199) Kitware Robot (administrator) 2016-06-10 14:28	Resolving issue as `moved`. This issue tracker is no longer used. Further discussion of this issue may take place in the current CMake Issues page linked in the banner at the top of this page.

Issue History
Date Modified	Username	Field	Change
2013-01-11 20:23	szx	New Issue
2013-01-11 20:23	szx	File Added: test.zip
2016-06-10 14:28	Kitware Robot	Note Added: 0042199
2016-06-10 14:28	Kitware Robot	Status	new => resolved
2016-06-10 14:28	Kitware Robot	Resolution	open => moved
2016-06-10 14:28	Kitware Robot	Assigned To	=> Kitware Robot
2016-06-10 14:31	Kitware Robot	Status	resolved => closed