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| author | Roland McGrath <roland@hack.frob.com> | 2012-05-25 13:40:20 -0700 |
|---|---|---|
| committer | Roland McGrath <roland@hack.frob.com> | 2012-05-25 13:40:20 -0700 |
| commit | 3a097cc7a18309c864186c1b864b90889d2a45e9 (patch) | |
| tree | 90867caf9bc281dee470b566c7a3188ce86d20c1 /configure.in | |
| parent | 21708942c9b115a91dc03318a5f9e14328c5a71e (diff) | |
| download | glibc-3a097cc7a18309c864186c1b864b90889d2a45e9.tar.gz | |
Add --enable-systemtap configuration to define static probe points.
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 38b55a6784..1ae9ca48fb 100644 --- a/configure.in +++ b/configure.in @@ -252,6 +252,7 @@ else fi AC_SUBST(libc_cv_nss_crypt) + AC_ARG_ENABLE([obsolete-rpc], AC_HELP_STRING([--enable-obsolete-rpc], [build and install the obsolete RPC code for link-time usage]), @@ -263,6 +264,29 @@ if test "$link_obsolete_rpc" = yes; then AC_DEFINE(LINK_OBSOLETE_RPC) fi +AC_ARG_ENABLE([systemtap], + [AS_HELP_STRING([--enable-systemtap], + [enable systemtap static probe points @<:@default=no@:>@])], + [systemtap=$enableval], + [systemtap=no]) +if test "x$systemtap" != xno; then + AC_CACHE_CHECK([for systemtap static probe support], libc_cv_sdt, [dnl + old_CFLAGS="$CFLAGS" + CFLAGS="-std=gnu99 $CFLAGS" + AC_COMPILE_IFELSE([#include <sys/sdt.h> +void foo (int i, void *p) +{ + asm ("" STAP_PROBE_ASM (foo, bar, STAP_PROBE_ASM_TEMPLATE (2)) "" + :: STAP_PROBE_ASM_OPERANDS (2, i, p)); +}], [libc_cv_sdt=yes], [libc_cv_sdt=no]) + CFLAGS="$old_CFLAGS"]) + if test $libc_cv_sdt = yes; then + AC_DEFINE([USE_STAP_PROBE]) + elif test "x$systemtap" != xauto; then + AC_MSG_FAILURE([systemtap support needs sys/sdt.h with asm support]) + 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 |