Users can now generate the necessary linker args for their
own applications using something like:
PKG_CONFIG_PATH=build/lib/pkgconfig pkg-config --libs spdk_nvme
Dependencies between libraries are included in the generated
.pc files, so the user only needs to pass the top-level subsystems
or individual SPDK libraries they are using in their application.
Modules will automatically be added to the output if the associated
library is specified. For example, specifying "spdk_bdev" will include
the libraries not only for spdk_bdev, but also all of the bdev modules.
Users still need to supply the -Wl,--no-as-needed or -Wl,--whole-archive
flags. They cannot be added to the .pc files without increasing the length
of the argument string by a factor of 15x to 20x.
Modify the test/external_code/hello_world Makefile to use pkg-config to
ensure this gets tested at some level in our autotest environment.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ie48a75f11969d5d775d514cf10bcb82d197eabfd
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4371
Community-CI: Broadcom CI
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
