1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
# pkgconf
pkgconf provides compiler and linker configuration for development frameworks.
## general summary
pkgconf is a program which helps to configure compiler and linker flags for
development frameworks.
It is similar to pkg-config, but was written from scratch in the summer of 2011
to replace pkg-config, which for a while needed itself to build itself (they have
since included a 'stripped down copy of glib 2.0') Since then we have worked on
improving pkg-config for embedded use.
## usage
Implementations of pkg-config, such as pkgconf, are typically used with the
PKG_CHECK_MODULES autoconf macro. As far as we know, pkgconf is
compatible with all known variations of this macro. pkgconf detects at
runtime whether or not it was started as 'pkg-config', and if so, attempts
to set program options such that its behaviour is similar.
In terms of the autoconf macro, it is possible to specify the PKG_CONFIG
environment variable, so that you can test pkgconf without overwriting your
pkg-config binary. Some other build systems may also respect the PKG_CONFIG
environment variable.
To set the enviornment variable on the bourne shell and clones (i.e. bash), you
can run:
$ export PKG_CONFIG=/usr/bin/pkgconf
## technical design (why pkgconf is better for distros)
pkgconf builds an acyclic directed dependency graph. This allows for the user
to more conservatively link their binaries -- which may be helpful in some
environments, such as when prelink(1) is being used. As a result of building
a directed dependency graph designed for the specific problem domain provided
by the user, more accurate dependencies can be determined. pkg-config, on the
other hand builds a database of all known pkg-config files on the system before
attempting to resolve dependencies, which is a considerably slower and less
efficient design.
pkgconf also does not bundle any third-party libraries or depend on any third-party
libraries, making it a great tool for embedded systems and distributions with
security concerns.
## compiling
pkgconf is basically compiled the same way any other autotools-based project is
compiled:
$ ./configure
$ make
$ sudo make install
If you are installing pkgconf into a custom prefix, such as `/opt/pkgconf`, you will
likely want to define the default system includedir and libdir for your toolchain.
To do this, use the `--with-system-includedir` and `--with-system-libdir` configure
flags like so:
$ ./configure \
--prefix=/opt/pkgconf \
--with-system-libdir=/lib:/usr/lib \
--with-system-includedir=/usr/include
$ make
$ sudo make install
If you want pkgconf to be used when you invoke `pkg-config`, you should install a
symlink for this. We do not do this for you, as we believe it is better for vendors
to make this determination themselves.
$ ln -sf /usr/bin/pkgconf /usr/bin/pkg-config
## release tarballs
Release tarballs are available at <http://tortois.es/~nenolod/distfiles/>.
## reporting bugs
See <https://github.com/pkgconf/pkgconf/issues>.
|
