X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=configure.ac;h=ba7538dbfca5cf33d4ae1b95deb2963f8a9ef08f;hp=8ac0c4172682668f70fd1e9d158d8c15f2b931e7;hb=628a1a723be893a52b715d25a2d529dc56c2dc03;hpb=d8d9a3405ce46af6d34d2e80e260ad50f3d211a0

diff --git a/configure.ac b/configure.ac
index 8ac0c41..ba7538d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,6 +26,7 @@ AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for
 AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
 AH_TEMPLATE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [clock_gettime() is detected.])
 AH_TEMPLATE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [Require the operating system to support the membarrier system call for default and bulletproof flavors.])
+AH_TEMPLATE([CONFIG_RCU_DEBUG], [Enable internal debugging self-checks. Introduce performance penalty.])
 
 # Allow requiring the operating system to support the membarrier system
 # call. Applies to default and bulletproof flavors.
@@ -215,8 +216,10 @@ AS_IF([test "x$ARCHTYPE" = "xx86"],[
 	AS_IF([test "x$host_cpu" != "xi386" -a "x$host_cpu" != "xi486" -a "x$host_cpu" != "xi586" -a "x$host_cpu" != "xi686" -a "x$host_vendor" != "xk1om" -a "x$host_cpu" != "xk1om"],[
 		AC_MSG_RESULT([yes])
 		AC_DEFINE([CONFIG_RCU_HAVE_FENCE], [1])
+		config_rcu_have_fence=yes
 	],[
 		AC_MSG_RESULT([no])
+		config_rcu_have_fence=no
 	])
 ])
 
@@ -240,6 +243,7 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 # Search for clock_gettime
 AC_SEARCH_LIBS([clock_gettime], [rt], [
 	AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
+	config_rcu_have_clock_gettime=yes
 ], [])
 
 AM_CONDITIONAL([COMPAT_FUTEX], [test "x$compat_futex_test" = "x1"])
@@ -253,6 +257,13 @@ AC_ARG_ENABLE([smp-support],
 	[def_smp_support="yes"])
 AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])])
 
+# RCU debugging option
+AC_ARG_ENABLE([rcu-debug],
+      AS_HELP_STRING([--enable-rcu-debug], [Enable internal debugging
+		      self-checks. Introduce performance penalty.]))
+AS_IF([test "x$enable_rcu_debug" = "xyes"], [
+       AC_DEFINE([CONFIG_RCU_DEBUG], [1])
+])
 
 # From the sched_setaffinity(2)'s man page:
 # ~~~~
@@ -385,15 +396,56 @@ AC_CONFIG_FILES([
 ])
 AC_OUTPUT
 
-# Report on selected configure options
-AS_IF([test "x$def_smp_support" = "xyes"],[
-	AS_ECHO("SMP support enabled.")
-],[
-	AS_ECHO("SMP support disabled.")
-])
+#
+# Mini-report on what will be built.
+#
+
+PPRINT_INIT
+PPRINT_SET_INDENT(1)
+PPRINT_SET_TS(38)
+
+AS_ECHO
+AS_ECHO("${PPRINT_COLOR_BLDBLU}Userspace-RCU $PACKAGE_VERSION${PPRINT_COLOR_RST}")
+AS_ECHO
+
+PPRINT_SUBTITLE([Features])
+
+PPRINT_PROP_STRING([Target architecture], $host_cpu)
+
+# SMP support enabled/disabled
+test "x$def_smp_support" = "xyes" && value=1 || value=0
+PPRINT_PROP_BOOL([SMP support], $value)
+
+# Memory fence support available
+test "x$config_rcu_have_fence" = "xyes" && value=1 || value=0
+PPRINT_PROP_BOOL([Memory fence instructions], $value)
+
+# Futex support available
+test "x$compat_futex_test" = "x0" && value=1 || value=0
+PPRINT_PROP_BOOL([Futex support], $value)
+
+# TLS
+test "x$def_tls_detect" = "x" && value="pthread_getspecific()" || value="$def_tls_detect"
+PPRINT_PROP_STRING([Thread Local Storage (TLS)], [$value])
+
+# clock_gettime() available
+test "x$config_rcu_have_clock_gettime" = "xyes" && value=1 || value=0
+PPRINT_PROP_BOOL([clock_gettime()], $value)
+
+# Require membarrier
+test "x$def_sys_membarrier_fallback" != "xyes" && value=1 || value=0
+PPRINT_PROP_BOOL([Require membarrier], $value)
+
+# RCU debug enabled/disabled
+test "x$enable_rcu_debug" = "xyes" && value=1 || value=0
+PPRINT_PROP_BOOL([Internal debugging], $value)
+
+report_bindir="`eval eval echo $bindir`"
+report_libdir="`eval eval echo $libdir`"
+
+# Print the bindir and libdir this `make install' will install into.
+AS_ECHO
+PPRINT_SUBTITLE([Install directories])
+PPRINT_PROP_STRING([Binaries], [$report_bindir])
+PPRINT_PROP_STRING([Libraries], [$report_libdir])
 
-AS_IF([test "x$def_tls_detect" = "x"],[
-	AS_ECHO("Thread Local Storage (TLS): pthread_getspecific().")
-],[
-	AS_ECHO("Thread Local Storage (TLS): $def_tls_detect.")
-])