commit 650285d5be2aacd9c0e60260563dd0235b729af7
author Jason Evans <je@fb.com> Mon Mar 19 10:25:27 2012 -0700
committer Jason Evans <je@fb.com> Mon Mar 19 10:25:27 2012 -0700
tree dc1fc89ebef769c73f16c974fd6986b45829a545
parent e24c7af35d1e9d24d02166ac98cfca7cf807ff13

Generalize dlsym() configuration.

Generalize dlsym() configuration to succeed if dlsym() is in libc rather
than libdl.

configure.ac

diff --git a/configure.ac b/configure.ac
index b92a749..76cb670 100644
--- a/configure.ac
+++ b/configure.ac
@@ -777,8 +777,10 @@
 )
 if test "x$enable_lazy_lock" = "x1" ; then
   AC_CHECK_HEADERS([dlfcn.h], , [AC_MSG_ERROR([dlfcn.h is missing])])
-  AC_CHECK_LIB([dl], [dlopen], [LIBS="$LIBS -ldl"],
-               [AC_MSG_ERROR([libdl is missing])])
+  AC_CHECK_FUNC([dlsym], [],
+    [AC_CHECK_LIB([dl], [dlsym], [LIBS="$LIBS -ldl"],
+                  [AC_MSG_ERROR([libdl is missing])])
+    ])
   AC_DEFINE([JEMALLOC_LAZY_LOCK], [ ])
 fi
 AC_SUBST([enable_lazy_lock])