.pc file with ${pc_sysrootdir}: different behavior between muon and meson

[vtorri]

Happys new year

I have tested with xcb-proto.pc, which contains:

prefix=/opt/xcb
exec_prefix=${prefix}
datarootdir=${prefix}/share
datadir=${datarootdir}
xcbincludedir=${pc_sysrootdir}${datadir}/xcb
PYTHON_PREFIX=${prefix}
pythondir=${pc_sysrootdir}${PYTHON_PREFIX}/lib/python3.12/site-packages

Name: XCB Proto
Description: X protocol descriptions for XCB
Version: 1.17.0

the behavior of pkgconf when I retrieve the value of xcbincludedir, on Windows or Linux, is the same:

1. if PKG_CONFIG_SYSROOT_DIR is not set, pkgconf --variable=xcbincludedir= xcb-proto returns

• Linux: //usr/share/xcb
• Windows: /C:/Documents/msys2_2/opt/xcb/share/xcb

2. if PKG_CONFIG_SYSROOT_DIR is set to nothing, pkgconf --variable=xcbincludedir= xcb-proto returns

• Linux: /usr/share/xcb
• Windows: C:/Documents/msys2_2/opt/xcb/share/xcb

Now, with this meson.build test file:

project('test', 'c')
pkg_mod = import('pkgconfig')
xcbproto = dependency('xcb-proto', required: true, version: '>= 1.17.0')
xcbproto_inc_dir = xcbproto.get_variable(pkgconfig: 'xcbincludedir')
warning(xcbproto_inc_dir)

With meson, on Windows (I think it will be the same on Linux)

1. if PKG_CONFIG_SYSROOT_DIR is not set, meson setup build displays WARNING: /C:/Documents/msys2_2/opt/xcb/share/xcb
2. if PKG_CONFIG_SYSROOT_DIR is set to nothing, meson setup build displays WARNING: C:/Documents/msys2_2/opt/xcb/share/xcb

The behavior is consistent with what pkgconf returns

With muon git, on Windows (I think it will be the same on Linux)

1. if PKG_CONFIG_SYSROOT_DIR is not set, muon setup build displays warn //opt/xcb/share/xcbb
2. if PKG_CONFIG_SYSROOT_DIR is set to nothing, muon setup build displays warn //opt/xcb/share/xcb

So with muon:

1. / is always prepended, contrary to what pkgconf returns
2. /opt is not expanded

[vtorri]

about pkgconf : pkgconf/pkgconf@aaa89a4