summaryrefslogtreecommitdiff
path: root/configure
diff options
context:
space:
mode:
authorRoland McGrath <roland@hack.frob.com>2012-05-25 13:40:20 -0700
committerRoland McGrath <roland@hack.frob.com>2012-05-25 13:40:20 -0700
commit3a097cc7a18309c864186c1b864b90889d2a45e9 (patch)
tree90867caf9bc281dee470b566c7a3188ce86d20c1 /configure
parent21708942c9b115a91dc03318a5f9e14328c5a71e (diff)
downloadglibc-3a097cc7a18309c864186c1b864b90889d2a45e9.tar.gz
Add --enable-systemtap configuration to define static probe points.
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure48
1 files changed, 48 insertions, 0 deletions
diff --git a/configure b/configure
index 09a06377d7..d73042752b 100755
--- a/configure
+++ b/configure
@@ -784,6 +784,7 @@ enable_all_warnings
enable_multi_arch
enable_nss_crypt
enable_obsolete_rpc
+enable_systemtap
with_cpu
'
ac_precious_vars='build_alias
@@ -1441,6 +1442,7 @@ Optional Features:
--enable-nss-crypt enable libcrypt to use nss
--enable-obsolete-rpc build and install the obsolete RPC code for
link-time usage
+ --enable-systemtap enable systemtap static probe points [default=no]
Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
@@ -3753,6 +3755,7 @@ else
fi
+
# Check whether --enable-obsolete-rpc was given.
if test "${enable_obsolete_rpc+set}" = set; then :
enableval=$enable_obsolete_rpc; link_obsolete_rpc=$enableval
@@ -3767,6 +3770,51 @@ if test "$link_obsolete_rpc" = yes; then
fi
+# Check whether --enable-systemtap was given.
+if test "${enable_systemtap+set}" = set; then :
+ enableval=$enable_systemtap; systemtap=$enableval
+else
+ systemtap=no
+fi
+
+if test "x$systemtap" != xno; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for systemtap static probe support" >&5
+$as_echo_n "checking for systemtap static probe support... " >&6; }
+if ${libc_cv_sdt+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ old_CFLAGS="$CFLAGS"
+ CFLAGS="-std=gnu99 $CFLAGS"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/sdt.h>
+void foo (int i, void *p)
+{
+ asm ("" STAP_PROBE_ASM (foo, bar, STAP_PROBE_ASM_TEMPLATE (2)) ""
+ :: STAP_PROBE_ASM_OPERANDS (2, i, p));
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ libc_cv_sdt=yes
+else
+ libc_cv_sdt=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ CFLAGS="$old_CFLAGS"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_sdt" >&5
+$as_echo "$libc_cv_sdt" >&6; }
+ if test $libc_cv_sdt = yes; then
+ $as_echo "#define USE_STAP_PROBE 1" >>confdefs.h
+
+ elif test "x$systemtap" != xauto; then
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "systemtap support needs sys/sdt.h with asm support
+See \`config.log' for more details" "$LINENO" 5; }
+ fi
+fi
+
# The way shlib-versions is used to generate soversions.mk uses a
# fairly simplistic model for name recognition that can't distinguish
# i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os