gnome.gtkdoc uses -Wl,-rpath to ensure the scanner executable built by
gtkdoc-scangobj will load shared libraries from the correct directories.
However, FreeBSD configures its linker to use --enable-new-dtags by
default, which converts RPATH to RUNPATH. If users have LD_LIBRARY_PATH
environment variable set, RUNPATH will be overrided by LD_LIBRARY_PATH
and libraries will be loaded from wrong directories, causing undefined
symbol error when running the executable.
In order to solve the problem, we have to prepend directories specified
with -Wl,-rpath to LD_LIBRARY_PATH to avoid relying on the deprecated
RPATH attribute.
The reason for this change is the same as the previous commit. Although
g-ir-scanner can pick arguments from CFLAGS, CPPFLAGS, LDFLAGS
environment variables by itself, it is still better for build systems
to put them on the command line instead of relying on users to setup
the same environment.
Since g-ir-scanner doesn't provide a way to set arbitrary linker flags
on the command line, arguments in LDFLAGS that are not started with -L
are not passed.
GLib-based libraries and applications require gettext library to compile
and link. On non-GNU systems such as FreeBSD, gettext is not included in
libc and it is required to pass '-L/usr/local/lib -lintl' to the linker
to satisfy the dependency on gettext. The pkg-config file provided by
GLib already has '-lintl', but users still have to remember to put
'-L/usr/local/lib' into LDFLAGS. If we don't pass LDFLAGS to
gtkdoc-scangobj, the linker will not be able to find '-lintl' when no
dependencies of the project provides '-L/usr/local/lib'.
Since all *FLAGS are commonly used in many build systems, this commit
adds support for not only LDFLAGS but also CFLAGS and CPPFLAGS.
Fixes#1724
Non-GObject-based libraries are not (reliably) introspectable, and this only
happens to work by accident, at the moment.
Briefly: In non-libtool mode, g-ir-scanner inspects the run-time
dependencies of a generated executable to determine the shared library name
an -l flag corresponds to. But this generated executable only references
the libraries by *_get_type() functions. So, if the library doesn't contain
any Gobject-based types, it is not referenced, and this inspection fails
with PECOFF binaries. It seems that distutils doesn't currently decide to
use --as-needed, so this just happens to work on ELF.
g-ir-scanner --no-libtool needed some fixes similar to [1] for Cygwin, as
well. Now that is done, it's possible to make these tests run and pass on
Cygwin.
[1] https://bugzilla.gnome.org/show_bug.cgi?id=781525
Also, use '^' to escape newlines in appveyor-install.bat to avoid an
absurdly long line, remove some unnecessary quotation, and alphabetically
sort packages
Also, define the _XOPEN_SOURCE feature test macro in the boost test to avoid
'not declared in this scope' warnings for pthread_rwlock_init(), etc.
teach detect_meson_py_location() that meson.py is not the
only one meson executable (there's wraptool + legacy scripts)
that could be installed to the PATH folder
fixes#2810
Dylan Baker
Christophe Gouiran
Jon Turney
Ting-Wei Lan
Jussi Pakkanen
Igor Gnatenko
Igor Gnatenko
Alexey Stukalov
Shlomi Fish
Nirbheek Chauhan
Benjamin Redelings