问题
My project (in C) has a third party dependency at build time. But the third party library is, by default, installed to /opt/
instead of /lib
, and I cannot find it in pkg-config
. From mesonbuild
's documentation, should I use declare_dependency
, I don't have its source code to treat it as my sub-project. If I use dependency()
to define it, I can't find the correct argument to define a customized location.
How to declare dependency for a non-standard third party library?
回答1:
As documented here and here
The main use case for this [
declare_dependency()
] is in subprojects.
and
[
dependency()
] finds an external dependency ... withpkg-config
[or] library-specific fallback detection logic ...
You can, instead, use find_library() provided by the compiler
object and include_directories() . find_library()
returns an object just like the one declare_dependency()
returns. include_directories()
returns an opaque object which contains the directories.
Assuming you are using a C compiler and your 3rd party library and its header file are /opt/hello/libhello.so
and /opt/hello/hello.h
, you can do:
project('myproj', 'c')
cc = meson.get_compiler('c')
lib_hello = cc.find_library('hello',
dirs : ['/opt/hello'])
inc_hello = include_directories('/opt/hello')
exec = executable('app',
'main.c',
dependencies : [lib_hello],
include_directories : inc_hello)
来源:https://stackoverflow.com/questions/47010355/mesonbuild-how-to-define-dependency-to-a-library-that-cannot-be-found-by-pkg-c