add new flags to output dependencies

Flags following gcc options: -M to output deps only, -MD to output
  deps while compiling (in .d files), -MP to output phony targets, -MG
  to keep missing copybooks, -MQ <target> to Makefile-quote target

Additional flags specific to GnuCOBOL: -fcopybook-deps outputs only
copybook names instead of file paths. -fcopybook-deps also forces -E.

NEWS

@@ -57,6 +57,13 @@ NEWS - user visible changes				-*- outline -*-
 ** New option -fdefault-file-colseq to specify the default
    file collating sequence
 
+** New dependency options: output COPY dependencies of COBOL files with
+   -M to only print dependencies without compiling, -MD to print
+   dependencies which compiling, -MP to add phony -targets, MQ to
+   quote Makefile-specific characters and -MG to keep -missing
+   copybooks. More specific is -fcopybook-deps to print only dependency
+   names as they appear after COPY instead of the exact filename.
+
 * More notable changes
 
 ** execution times were significantly reduced for the following:

cobc/ChangeLog

@@ -114,6 +114,21 @@
 	* codegen.c: handle profiling code generation under the
 	  cb_flag_prof guard
 
+2024-03-15  Fabrice Le Fessant <[email protected]>
+
+	* cobc.c: add new flags to output dependencies following gcc: -M to
+	  output deps only, -MD to output deps while compiling (in .d files),
+	  -MP to output phony targets, -MG to keep missing copybooks,
+	  -MQ <target> to Makefile-quote target
+	* flags.def: -fcopybook-deps outputs only copybook names instead
+	  of file paths. -fcopybook-deps also forces -E, -foneline-deps,
+	  -MT=copybooks, disables errors on missing copybooks and removes
+	  output on stdout.
+	* error.c (print_error_prefix): add cobc_slashify to replace backslashes
+	  by slashes, only if COB_IS_RUNNING_IN_TESTMODE is set.
+        * typeck.c (check_argument_conformance): check that param is well defined
+	  to prevent a segfault
+
 2024-02-19  Boris Eng <[email protected]>
 
 	* parser.y (screen_value_clause): replaced basic literals by literals