gallium: auxiliary: Fix standalone Android build of u_cpu_detect (v2)

Commit 463b7d0332c5("gallium: Enable ARM NEON CPU detection.")
introduced CPU feature detection based Android cpufeatures library.
Unfortunately it also added an assumption that if PIPE_OS_ANDROID is
defined, the library is also available, which is not true for the
standalone build without using Android build system.

Fix it by defining HAS_ANDROID_CPUFEATURES in Android.mk and replacing
respective #ifdefs to use it instead.

v2:
 - Add a comment explaining why the separate flag is needed (Emil).

Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
This commit is contained in:
Tomasz Figa 2017-07-18 16:20:52 +09:00 committed by Emil Velikov
parent 644ac2b780
commit 107b9c70d0
2 changed files with 10 additions and 2 deletions

View file

@ -50,6 +50,7 @@ LOCAL_MODULE := libmesa_gallium
LOCAL_STATIC_LIBRARIES += libmesa_nir
LOCAL_WHOLE_STATIC_LIBRARIES += cpufeatures
LOCAL_CFLAGS += -DHAS_ANDROID_CPUFEATURES
# generate sources
LOCAL_MODULE_CLASS := STATIC_LIBRARIES

View file

@ -67,7 +67,7 @@
#include <unistd.h>
#endif
#if defined(PIPE_OS_ANDROID)
#if defined(HAS_ANDROID_CPUFEATURES)
#include <cpu-features.h>
#endif
@ -304,7 +304,14 @@ PIPE_ALIGN_STACK static inline boolean sse2_has_daz(void)
static void
check_os_arm_support(void)
{
#if defined(PIPE_OS_ANDROID)
/*
* On Android, the cpufeatures library is preferred way of checking
* CPU capabilities. However, it is not available for standalone Mesa
* builds, i.e. when Android build system (Android.mk-based) is not
* used. Because of this we cannot use PIPE_OS_ANDROID here, but rather
* have a separate macro that only gets enabled from respective Android.mk.
*/
#if defined(HAS_ANDROID_CPUFEATURES)
AndroidCpuFamily cpu_family = android_getCpuFamily();
uint64_t cpu_features = android_getCpuFeatures();