Fix the following build failure without threads raised since switch to
meson-package in commit 1fa58814c0 which
wrongly removed -DCAIRO_NO_MUTEX=1:
In file included from ../src/cairo-mutex-type-private.h:45,
from ../src/cairo-scaled-font-private.h:45,
from ../src/cairoint.h:415,
from ../src/cairo-arc.c:37:
../src/cairo-mutex-impl-private.h:231:3: error: #error "XXX: No mutex implementation found. Cairo will not work with multiple threads. Define CAIRO_NO_MUTEX to 1 to acknowledge and accept this limitation and compile cairo without thread-safety support."
231 | # error "XXX: No mutex implementation found. Cairo will not work with multiple threads. Define CAIRO_NO_MUTEX to 1 to acknowledge and accept this limitation and compile cairo without thread-safety support."
| ^~~~~
Note that prior to 1fa58814c0, the
condition was:
ifeq ($(BR2_TOOLCHAIN_HAS_THREADS_NPTL),)
CAIRO_CONF_ENV += CPPFLAGS="$(TARGET_CPPFLAGS) -DCAIRO_NO_MUTEX=1"
endif
but that was in fact wrong, because it meant that toolchain with
linuxthreads (not NPTL) would have thread support, but a thread-unsafe
cairo library. The condition was changed from
BR2_TOOLCHAIN_HAS_THREADS to BR2_TOOLCHAIN_HAS_THREADS_NPTL in an
older commit, 92f14307ba, but now
cairo's mutex support builds fine with linuxthreads, so we can use
CAIRO_NO_MUTEX=1 only when thread support is not available at all.
Fixes: 1fa58814c0
- http://autobuild.buildroot.org/results/a123355b6d315d2fcda646d3f1c7b588cba78258
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
9880dba15c