Hello,
We have a modular in-house library that we use for our software. Let’s call it
lib_x. Let’s call a few of the modules (we have 7 I think) mod_y, mod_z, mod_u
and mod_v. Let’s say I have two applications that use all of this and call
them app_1 and app_2.
The way I have setup our CMake builds is that I first find out what modules of
lib_x the applications app_1 and app_2 depend on. Then I build a single
library lib_x which include the selected modules and finally, I build each app
independently and link against the single library.
For instance, let’s say app_1 depends on mod_y and mod_z and app_2 depends on
mod_y, mod_z and mod_u. Then, I would build lib_x with everything for modules
y, z and u (excluding module v) and build app_1 and app_2 linking against lib_x
Might not be explained properly (my apologies), willing to answer any questions
on that.
I am looking into changing/modernizing our build system. From what I
understand, instead of building everything into a single library, I could build
separate libraries, export them as targets and link against them. (Pretty sure
I could have done that before, but just coming around to do it.)
Am I wrong ? Am I completely missing the point ? If I am not and it is a
reasonable approach, is there a place where a tutorial is available ? I am
trying really hard to read the documentation on export command and targets and
such, but I am having a real hard time when trying to actually implement
anything concrete.
I first attempted to do this:
include_directories( "${LIB_ROOT_DIR}/include" )
add_library( general ${GENERAL_SRCS}
${GENERAL_HDRS}
${LIB_ROOT_DIR}/include/hdqrt/always_inline.h
${LIB_ROOT_DIR}/include/hdqrt/debug.h
${LIB_ROOT_DIR}/include/hdqrt/Error.h
${LIB_ROOT_DIR}/include/hdqrt/warn_stop.h
${LIB_ROOT_DIR}/include/hdqrt/warn_restart.h
)
set_property( TARGET general PROPERTY CXX_STANDARD 14 )
export( TARGETS general FILE general.cmake )
but then, the general.cmake file is nowhere to be found. And if I test in
another (parent) CMakeLists.txt to see if the target is defined, it is not.
Sorry if this is a silly question. Trying to figure this out.
Thanks in advance.
Ghyslain--
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