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When shared libraries are disabled we can't build loadable modules
either, so the testModule test can't work as the testdso.la target
doesn't build a module.
Newer versions of llvm-symbolizer require libxml2 themselves. Running
a test program with LD_LIBRARY_PATH set to .libs makes llvm-symbolizer
pick up the tested development version of libxml2 which breaks
completely if the build is instrumented with ASan. Add a wrapper script
that invokes llvm-symbolizer with an empty LD_LIBRARY_PATH.
Hardcode the required library on MinGW because winsock uses non-standard
calling conventions on 32-bit Windows which makes AC_SEARCH_LIBS fail.
Should fix#406.
On MinGW, cmake requires curl which requires nghttp2 which requires
libxml2. But having a system libxml2 interferes with the Python tests
for now. Ultimately, we should use Python's os.add_dll_directory() on
Windows. I'm not sure why the current solution using PATH even works.
Setting the $MSYSTEM environment variable and invoking shell scripts
with 'bash -lc' sets up the correct MinGW environment.
See https://www.msys2.org/docs/ci/
With clang 14, __attribute__ ((nosanitize)) stops working with
-fsanitize=undefined,integer
Using the following works (and should be equivalent)
-fsanitize=undefined,unsigned-integer-overflow,implicit-conversion
Add a new configuration flag that controls whether the outdated support
for XPointer locations (ranges and points) is enabled.
--with-xptr-locs # Autotools
LIBXML2_WITH_XPTR_LOCS # CMake
The latest spec for what it essentially an XPath extension seems to be
this working draft from 2002:
https://www.w3.org/TR/xptr-xpointer/
The xpointer() scheme is listed as "being reviewed" in the XPointer
registry since at least 2006. libxml2 seems to be the only modern
software that tries to implement this spec, but the code has many bugs
and quality issues.
The flag defaults to "off" and support for this extensions has to be
requested explicitly. The relevant API functions are deprecated.
* `AM_PATH_PYTHON` is a much more common idiom for building
and installing python modules than writing your own.
* It also makes cross-compiling the python bindings possible.
Previously the `PYTHON_CFLAGS`/`PYTHON_LIBS` would have been
based on the `--build` python and not the `--host` python.
By using `pkg-config`, we can always redirect the python-X.Y.pc.
Bug: https://bugs.gentoo.org/582130
This enables the remaining checks from the "integer" group:
- implicit-unsigned-integer-truncation
- implicit-signed-integer-truncation
- implicit-integer-sign-change
These checks can find all kinds of bugs and only require explicit casts
if integer truncation or sign change is really intended.
