2 files changed, 22 insertions, 5 deletions

diff --git a/miscutils/make.c b/miscutils/make.c
index 1dfbd8c44..8c74d7113 100644
--- a/miscutils/make.c
+++ b/miscutils/make.c
@@ -2611,9 +2611,10 @@ make(struct name *np, int level)
 
         if (!(np->n_flag & N_DOUBLE)) {
                 // Find the commands needed for a single-colon rule, using
-                // an inference rule or .DEFAULT rule if necessary
+                // an inference rule or .DEFAULT rule if necessary (but,
+                // as an extension, not for phony targets)
                 sc_cmd = getcmd(np);
-                if (!sc_cmd) {
+                if (!sc_cmd && (posix || !(np->n_flag & N_PHONY))) {
                         impdep = dyndep(np, &imprule);
                         if (impdep) {
                                 sc_cmd = imprule.r_cmd;
@@ -2623,7 +2624,8 @@ make(struct name *np, int level)
 
                 // As a last resort check for a default rule
                 if (!(np->n_flag & N_TARGET) && np->n_tim.tv_sec == 0) {
-                        sc_cmd = getcmd(findname(".DEFAULT"));
+                        if (posix || !(np->n_flag & N_PHONY))
+                                sc_cmd = getcmd(findname(".DEFAULT"));
                         if (!sc_cmd) {
                                 if (doinclude)
                                         return 1;
@@ -2634,10 +2636,11 @@ make(struct name *np, int level)
         }
         else {
                 // If any double-colon rule has no commands we need
-                // an inference rule
+                // an inference rule (but, as an extension, not for phony targets)
                 for (rp = np->n_rule; rp; rp = rp->r_next) {
                         if (!rp->r_cmd) {
-                                impdep = dyndep(np, &imprule);
+                                if (posix || !(np->n_flag & N_PHONY))
+                                        impdep = dyndep(np, &imprule);
                                 if (!impdep) {
                                         if (doinclude)
                                                 return 1;
diff --git a/testsuite/make.tests b/testsuite/make.tests
index 5485233f6..c92c69340 100755
--- a/testsuite/make.tests
+++ b/testsuite/make.tests
@@ -738,4 +738,18 @@ file1:
 '
 cd .. || exit 1; rm -rf make.tempdir 2>/dev/null
 
+# GNU make and BSD make don't allow the use of inference rules
+# for phony targets.  In POSIX mode the output is "phony.xyz\n".
+mkdir make.tempdir && cd make.tempdir || exit 1
+touch phony.xyz
+testing "make don't use inference rule for phony target" \
+        "make -f -" "make: nothing to be done for phony\n" "" '
+.PHONY: phony
+.SUFFIXES: .xyz
+.xyz:
+        @echo $<
+phony:
+'
+cd .. || exit 1; rm -rf make.tempdir 2>/dev/null
+
 exit $FAILCOUNT