payredu

Fix Makefile under bmake

* Assign RM=rm -f is missing
* Use ${.ALLSRC} instead of $_ to prevent early expansion

diff --git a/.gitignore b/.gitignore
@@ -5,6 +5,7 @@ hotbook
 *.o
 *.obj
 *.a
+payredu
 payredu.exe
 tags
 

diff --git a/Makefile b/Makefile
@@ -20,7 +20,7 @@ CFLAGS += ${${CC}_CFLAGS}
 out := ${${CC}_out}
 
 # gmake hack
-^ ?= $_
+^ ?= ${.ALLSRC}
 
 export LD_LIBRARY_PATH=.
 

@@ -51,5 +51,7 @@ format:
 
 include tests/tests.mk
 
+RM?=rm -f
+
 clean:
 	-${RM} payredu payredu.exe *.a *.so *.o *.obj hotbook $(TESTS)