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authorRichard Earnshaw <Richard.Earnshaw@arm.com>2020-12-21 15:03:03 +0000
committerRichard Earnshaw <rearnsha@arm.com>2020-12-21 15:25:25 +0000
commit3378408987189772eec7bc62fc9923a6f01dc63c (patch)
tree91852b072e2b766bfc63ab738424c70d3ee92d3d /configure
parentd552058570ea2c00fb88b4621be3285cda03033f (diff)
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config: Allow memory tagging to be enabled when configuring glibc
This patch adds the configuration machinery to allow memory tagging to be enabled from the command line via the configure option --enable-memory-tagging. The current default is off, though in time we may change that once the API is more stable.
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure22
1 files changed, 22 insertions, 0 deletions
diff --git a/configure b/configure
index 4795e72..6a35553 100755
--- a/configure
+++ b/configure
@@ -676,6 +676,7 @@ build_nscd
libc_cv_static_nss_crypt
libc_cv_nss_crypt
build_crypt
+memory_tagging
experimental_malloc
enable_werror
all_warnings
@@ -781,6 +782,7 @@ enable_all_warnings
enable_werror
enable_multi_arch
enable_experimental_malloc
+enable_memory_tagging
enable_crypt
enable_nss_crypt
enable_systemtap
@@ -1450,6 +1452,8 @@ Optional Features:
architectures
--disable-experimental-malloc
disable experimental malloc features
+ --enable-memory-tagging enable memory tagging if supported by the
+ architecture [default=no]
--disable-crypt do not build nor install the passphrase hashing
library, libcrypt
--enable-nss-crypt enable libcrypt to use nss
@@ -3519,6 +3523,24 @@ fi
+# Check whether --enable-memory-tagging was given.
+if test "${enable_memory_tagging+set}" = set; then :
+ enableval=$enable_memory_tagging; memory_tagging=$enableval
+else
+ memory_tagging=no
+fi
+
+if test "$memory_tagging" = yes; then
+ # Only enable this on architectures that support it.
+ case $host_cpu in
+ aarch64)
+ $as_echo "#define USE_MTAG 1" >>confdefs.h
+
+ ;;
+ esac
+fi
+
+
# Check whether --enable-crypt was given.
if test "${enable_crypt+set}" = set; then :
enableval=$enable_crypt; build_crypt=$enableval