oprofile: don't install shared library in BR2_STATIC_LIBS=y configs

When building with BR2_STATIC_LIBS=y, no shared library gets built, so
the installation of libopagent.so* fails. This commit gets rid of this
installation step when BR2_STATIC_LIBS=y.

Fixes:

  http://autobuild.buildroot.net/results/2a6604622392a3f127fb61505e2751a88a90af7b/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/oprofile/oprofile.mk

@@ -47,6 +47,12 @@ endif
 # a static build. We have to do the call to pkgconfig manually...
 OPROFILE_CONF_ENV += LIBS="`$(PKG_CONFIG_HOST_BINARY) --libs popt`"
 
+ifeq ($(BR2_STATIC_LIBS),)
+define OPROFILE_INSTALL_SHARED_LIBRARY
+	$(INSTALL) -m 755 $(@D)/libopagent/.libs/*.so* $(TARGET_DIR)/usr/lib/oprofile
+endef
+endif
+
 define OPROFILE_INSTALL_TARGET_CMDS
 	$(INSTALL) -d -m 755 $(TARGET_DIR)/usr/bin
 	$(INSTALL) -d -m 755 $(TARGET_DIR)/usr/share/oprofile
@@ -57,7 +63,7 @@ define OPROFILE_INSTALL_TARGET_CMDS
 	fi
 	$(INSTALL) -m 644 $(@D)/libregex/stl.pat $(TARGET_DIR)/usr/share/oprofile
 	$(INSTALL) -m 755 $(addprefix $(@D)/, $(OPROFILE_BINARIES)) $(TARGET_DIR)/usr/bin
-	$(INSTALL) -m 755 $(@D)/libopagent/.libs/*.so* $(TARGET_DIR)/usr/lib/oprofile
+	$(OPROFILE_INSTALL_SHARED_LIBRARY)
 endef
 
 $(eval $(autotools-package))