[m-dev.] for review: fix maybe_mlds_to_gcc.err rule

[Zoltan Somogyi]

This is for review by Fergus.

Fix a problem that used to cause installs into not-yet-created directories
to fail.

scripts/Mmake.rules:
	Instead of invoking $(MC) --errorcheck-only when creating .err files,
	invoke the macros $(MCE).

scripts/Mmake.vars:
	Define the default value of $(MCE) as $(MC) --errorcheck-only.

compiler/Mmakefile:
	Override the default value of $(MCE) to specify the search path,
	just as all the other invocations of the Mercury compiler in this
	directory do. The absence of such override could lead to a raft
	of messages about interface files not being found when trying to
	create maybe_mlds_to_gcc.err.

Zoltan.

cvs diff: Diffing .
cvs diff: Diffing bindist
cvs diff: Diffing boehm_gc
cvs diff: Diffing boehm_gc/Mac_files
cvs diff: Diffing boehm_gc/cord
cvs diff: Diffing boehm_gc/cord/private
cvs diff: Diffing boehm_gc/doc
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cvs diff: Diffing boehm_gc/include/private
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Index: compiler/Mmakefile
===================================================================
RCS file: /home/mercury1/repository/mercury/compiler/Mmakefile,v
retrieving revision 1.45
diff -u -b -r1.45 Mmakefile
--- compiler/Mmakefile	2001/06/24 12:51:58	1.45
+++ compiler/Mmakefile	2001/07/03 08:09:01
@@ -51,6 +51,7 @@
 MCOI	=	$(M_ENV) $(SMC) --make-optimization-interface
 MCTOI	=	$(M_ENV) $(SMC) --make-transitive-optimization-interface
 MCG	=	$(M_ENV) $(SMC) --compile-to-c
+MCE	=	$(M_ENV) $(SMC) --errorcheck-only
 MCS	=	$(M_ENV) $(SMC) --split-c-files -c --cflags "$(ALL_CFLAGS)"
 MGNUC	=	$(M_ENV) $(SCRIPTS_DIR)/mgnuc
 C2INIT =	MERCURY_MOD_LIB_MODS="$(LIBRARY_DIR)/$(STD_LIB_NAME).init $(RUNTIME_DIR)/$(RT_LIB_NAME).init" \
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cvs diff: Diffing samples/tests/c_interface/mercury_calls_fortran
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cvs diff: Diffing samples/tests/c_interface/simpler_cplusplus_calls_mercury
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Index: scripts/Mmake.rules
===================================================================
RCS file: /home/mercury1/repository/mercury/scripts/Mmake.rules,v
retrieving revision 1.96
diff -u -b -r1.96 Mmake.rules
--- scripts/Mmake.rules	2001/06/27 05:04:42	1.96
+++ scripts/Mmake.rules	2001/07/03 08:09:14
@@ -235,7 +235,7 @@
 # (Is that a bug in unix? In bash?)
 
 .m.err:
-	$(MC) $(ALL_MCFLAGS) --errorcheck-only $< > $@ 2>&1
+	$(MCE) $(ALL_MCFLAGS) $< > $@ 2>&1
 	@touch $@
 
 .m.ugly:
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