[gjs/wip/ptomato/autotools: 16/16] build: Allow rm in Makefile rules to fail

[Philip Chimento <pchimento src gnome org>]

commit 745e0ea1808895514f4672b7fb92a02d1dcb81b3
Author: Philip Chimento <philip chimento gmail com>
Date:   Mon Sep 26 23:00:15 2016 -0700

    build: Allow rm in Makefile rules to fail
    
    Sometimes it happens with -jN builds that a rule removes a file before
    another rule can get to it. In that case we do not want Make to abort.

 Makefile-test.am |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/Makefile-test.am b/Makefile-test.am
index 76e40ca..5101d37 100644
--- a/Makefile-test.am
+++ b/Makefile-test.am
@@ -137,15 +137,15 @@ lcov:
        test -d lcov || mkdir lcov
        $(LCOV) --compat-libtool --directory . --capture -o lcov/lcov_tmp.info
        $(LCOV) --extract lcov/lcov_tmp.info "$(PWD)/*" -o lcov/lcov.info
-       rm -f lcov/lcov_tmp.info
+       -rm -f lcov/lcov_tmp.info
        $(GENHTML) --legend -o lcov lcov/lcov.info lcov/coverage.lcov
 
 lcov-clean:
-       find . -name '*.gcda' -delete
-       rm -rf lcov
+       -find . -name '*.gcda' -delete
+       -rm -rf lcov
 
 lcov-realclean: lcov-clean
-       find . -name '*.gcno' -delete
+       -find . -name '*.gcno' -delete
 
 clean-local: test-user-data-clean lcov-realclean