mg-define-prereq=$(eval $1: $2)
+# CLEAN
+
+# A command that finds all genfiles in a given directory and deletes them and
+# the corresponding generated files. If a file is overridden, only the genfile
+# is deleted.
+#
+# Example:
+#
+# clean:
+# $(call mg-clean-cmd,.)
+# .PHONY: clean
+
+define mg-clean-cmd
+ @exec 3>&1 &&\
+ find $1 -name '*.g' | while read gf; do\
+ f="$${gf%.g}" &&\
+ if ! [ "$$f" -nt "$$gf" ]; then\
+ echo "rm -f '$$f'" >&3 && echo "$$f";\
+ fi &&\
+ echo "$$gf";\
+ done | xargs rm -f
+endef
+
+
# DEPENDENCY-LOGGING COMMANDS
mg-dlc-static-run-oid:=$(mg-genfile-oid)
assert_saw "$1.tmp"
}
+function assert {
+ if eval $*; then
+ echo "Good, $* returned true."
+ else
+ echo "Expected $* to return true but it returned false!"
+ fail
+ fi
+}
+
function remember_mtime {
while [ $# != 0 ]; do
eval "orig_mtime_${1//[^A-Za-z]/}=$(stat --format=%Y $1)"
# Simple makefile for stripping two kinds of comments.
# Tests an implicit rule and two competing explicit rules.
# Watch those dollar signs!
+
cat >Makefile <<'EOF'
include mgear.mk
.SECONDARY:
+
include hc-rule.mk
$(call mg-define-rule,%,%.ssc,sleep 1 && grep 'warn' $$< && sed -e 's_//.*$$$$__' $$< >$$t)
$(call mg-define-rule,index,index.in,sort $$< >$$t)
+
+clean:
+ $(call mg-clean-cmd,.)
+.PHONY: clean
EOF
+
cat >hc-rule.mk <<'EOF'
$(call mg-define-rule,%,%.hc,sed -e 's_#.*$$$$__' $$< >$$t)
EOF
assert_touched foo.g
assert_not_touched foo
+# Test cleaning. Remember, bar is still overridden.
+
+start_section "Cleaning"
+do_mgear clean
+
+assert_saw 'rm.*foo' # Some sort of indication of foo's deletion
+assert ! [ -f foo ] # foo deleted
+assert ! [ -f foo.g ] # foo.g deleted
+assert [ -f bar ] # bar not actually deleted...
+assert_contents bar <<<NEWCONTENT # and contents still correct.
+
+# Test rebuild and clean after override removal.
+
+start_section "Rebuild after override removal"
+rm bar
+do_mgear bar
+assert_generated bar
+assert_contents bar <<'EOF' # contents of bar restored according to rule
+the bar file has a different personality
+
+# I slip through
+warn: tell me about it!
+EOF
+
+start_section "Clean after override removal"
+do_mgear clean
+assert_saw 'rm.*bar'
+assert ! [ -f bar ] # bar finally deleted
+
+# Override bar again. Make sure an override works if bar.g doesn't exist just
+# as well as if bar.g is older than bar.
+
+start_section "Override bar before it is ever built"
+echo NEWERCONTENT >bar
+do_mgear bar
+
+assert_saw -i overrid
+assert_contents bar <<<NEWERCONTENT
+
cd ..
rm -rf test-zone
echo