[sysprof/wip/visualizers] build: add $LIBM to the sysprof binary

[Christian Hergert <chergert src gnome org>]

commit baf26fa0b6e93c2e2348a5712e63bef74f3da962
Author: Christian Hergert <chergert redhat com>
Date:   Wed Sep 28 18:06:00 2016 -0700

    build: add $LIBM to the sysprof binary

 configure.ac    |    1 +
 src/Makefile.am |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index dc51e45..a1b90ae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -130,6 +130,7 @@ PKG_CHECK_MODULES(SYSTEMD,
                   [libsystemd >= systemd_required_version],
                   [have_systemd=yes],
                   [have_systemd=no])
+LT_LIB_M
 
 # sysprofd requires libsystemd and polkit, and is required to run
 # the ui without root permissions
diff --git a/src/Makefile.am b/src/Makefile.am
index 8cf8148..562a110 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -27,6 +27,7 @@ nodist_sysprof_SOURCES = \
 sysprof_LDADD = \
        $(GIO_LIBS) \
        $(GTK_LIBS) \
+       $(LIBM) \
        $(POLKIT_LIBS) \
        $(top_builddir)/lib/libsysprof-@API_VERSION@.la \
        $(top_builddir)/lib/libsysprof-ui-@API_VERSION@.la \