Alexander Neundorf wrote:
with ADD_CUSTOM_COMMAND() you can specify exactly one output file.
In KDE we have cases (e.g. kconfig_compiler) where one custom command
produces more than one file, but e.g. two (source and header).
I guess this could lead to missing dependencies, which might hurt when
doing parallel builds. I didn't test yet, but this is probably true. What
can I do to add the missing dependencies ?
How would this appear in a makefile? Perhaps
output2: output1
output1: the_real_depends
the_real_command
To do this in CMake you can add a second custom command that outputs the
second output and depends on the first but with no command.
ADD_CUSTOM_COMMAND(
OUTPUT output1
COMMAND the_real_command
DEPENDS the_real_depends
)
ADD_CUSTOM_COMMAND(
OUTPUT output2
COMMAND ${CMAKE_COMMAND} -E echo "output2 is up to date"
DEPENDS output1
)
-Brad
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