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authorGravatar Fabrice Fontaine <fontaine.fabrice@gmail.com>2022-03-30 21:56:20 +0200
committerGravatar GitHub <noreply@github.com>2022-03-30 15:56:20 -0400
commitb9ad9bbfed92199a1a58504306d026cd2597539e (patch)
treead4c5917f1b1e4e655d668817728824d1be9c661 /absl
parentcfccbd2eb5b051f3c33f1a5bb441ec3029cb0a24 (diff)
Fix build with uclibc-ng (#1145)
uclibc-ng doesn't provide getauxval which results in the following build failure on arm or ppc with any user of abseil-cpp such as grpc: /home/buildroot/autobuild/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/10.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: /home/buildroot/autobuild/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libabsl_random_internal_randen_hwaes.so.2111.0.0: undefined reference to `getauxval' To fix this build failure, check that __UCLIBC__ is not defined before using getauxval (as Babel is not able to check function availability) Fixes: - http://autobuild.buildroot.org/results/775f3ca3dedebff29e212b29dfa896b7613b7a02 Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Diffstat (limited to 'absl')
-rw-r--r--absl/debugging/internal/vdso_support.cc2
-rw-r--r--absl/random/internal/randen_detect.cc7
2 files changed, 7 insertions, 2 deletions
diff --git a/absl/debugging/internal/vdso_support.cc b/absl/debugging/internal/vdso_support.cc
index c655cf45..e63ac4a3 100644
--- a/absl/debugging/internal/vdso_support.cc
+++ b/absl/debugging/internal/vdso_support.cc
@@ -33,7 +33,7 @@
#endif
#include <unistd.h>
-#if defined(__GLIBC__) && \
+#if !defined(__UCLIBC__) && defined(__GLIBC__) && \
(__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 16))
#define ABSL_HAVE_GETAUXVAL
#endif
diff --git a/absl/random/internal/randen_detect.cc b/absl/random/internal/randen_detect.cc
index 9bb58fc6..6dababa3 100644
--- a/absl/random/internal/randen_detect.cc
+++ b/absl/random/internal/randen_detect.cc
@@ -24,6 +24,11 @@
#include "absl/random/internal/platform.h"
+#if !defined(__UCLIBC__) && defined(__GLIBC__) && \
+ (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 16))
+#define ABSL_HAVE_GETAUXVAL
+#endif
+
#if defined(ABSL_ARCH_X86_64)
#define ABSL_INTERNAL_USE_X86_CPUID
#elif defined(ABSL_ARCH_PPC) || defined(ABSL_ARCH_ARM) || \
@@ -31,7 +36,7 @@
#if defined(__ANDROID__)
#define ABSL_INTERNAL_USE_ANDROID_GETAUXVAL
#define ABSL_INTERNAL_USE_GETAUXVAL
-#elif defined(__linux__)
+#elif defined(__linux__) && defined(ABSL_HAVE_GETAUXVAL)
#define ABSL_INTERNAL_USE_LINUX_GETAUXVAL
#define ABSL_INTERNAL_USE_GETAUXVAL
#endif