Avoid requiring AT_DCACHEBSIZE (data cache size) getauxval

Missing on Android it appears, or at least on Kullo CI NDK.
Not essential by any means.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/lib/utils/cpuid.cpp b/src/lib/utils/cpuid.cpp
index 325421d71..43ee4bc54 100644
--- a/src/lib/utils/cpuid.cpp
+++ b/src/lib/utils/cpuid.cpp
@@ -212,6 +212,7 @@ uint64_t arm_detect_cpu_features(size_t* cache_line_size)
    if(hwcap_crypto & ARM_hwcap_bit::SHA2_bit)
       detected_features |= CPUID::CPUID_ARM_SHA2_BIT;
 
+#if defined(AT_DCACHEBSIZE)
    const unsigned long dcache_line = ::getauxval(AT_DCACHEBSIZE);
 
    // plausibility check
@@ -219,6 +220,8 @@ uint64_t arm_detect_cpu_features(size_t* cache_line_size)
       *cache_line_size = static_cast<size_t>(dcache_line);
 #endif
 
+#endif
+
    // TODO: probe functions
 
    return detected_features;