When available, which is most of the time, use posix_memalign to implement
_mesa_align_malloc and friends.
diff --git a/configs/linux-solo b/configs/linux-solo
index 112cdd2..730c245 100644
--- a/configs/linux-solo
+++ b/configs/linux-solo
@@ -16,7 +16,7 @@
ARCH_FLAGS ?=
DEFINES = -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_SVID_SOURCE \
- -D_BSD_SOURCE -D_GNU_SOURCE \
+ -D_BSD_SOURCE -D_GNU_SOURCE -DHAVE_POSIX_MEMALIGN \
-DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1 -DDRM_USE_MALLOC -DIN_DRI_DRIVER
CFLAGS = $(WARN_FLAGS) $(OPT_FLAGS) $(PIC_FLAGS) $(ARCH_FLAGS) $(DEFINES) \