tools/zds/zdsgen.c: WIP Compiler/Assembler Wrapper

And additional wrapper that is needed for the ZDS-II build is a wrapper for the compiler and assemble.  This is needed because the ZDS-II cannot control the name or location of the output of the output object file:  it is always in the same directory as the source file and with the same name as the source file except with the .obj extension.

This was handled in the past with the MOVEOBJ definition which was specifically called Makefiles to move the objects to the correct position.  However, now there is a new behavior:  Output object files may also be named differently with added decoration in the file name.  This is done in the current apps/ directory build.

There is currently some ugly implementation that includes a long sequence of Bash code to handle the moving and/or renaming.  There is nothing in place for the Windows native case.

This wrapper, when complete, will clean up the Makefiles, improve build performance, and provide a solution that is portable to both the Cywin/MSYS environment as well as to the Windows native environment.

tools/zds/.gitignore

@@ -1,3 +1,5 @@
 /zdsar
 /zdsar.exe
+/zdsgen
+/zdsgen.exe
 /*.dSYM

tools/zds/Makefile

@@ -50,8 +50,8 @@ endif
 
 # Targets
 
-all: zdsar.exe
-default: zdsar.exe
+all: zdsar.exe zdsgen.exe
+default: all
 .PHONY: clean
 
 # Add CFLAGS=-g on the make command line to build debug versions
@@ -59,11 +59,16 @@ default: zdsar.exe
 CFLAGS = -O2 -Wall -Wstrict-prototypes -Wshadow -I.
 CFLAGS += -DHAVE_STRTOK_C=1
 
-# zdsar - Convert virtual addresses in nuttx.hex to physical addresses
+# zdsar - Wrapper for the ZDS-II librarian
 
-zdsar.exe: zdsar.c zdsar.c
+zdsar.exe: zdsar.c
 	$(Q) $(HOSTCC) $(HOSTCFLAGS) -o zdsar.exe zdsar.c
 
+# zdsgen - Wrapper for the ZDS-II compiler and assembler
+
+zdsgen.exe: zdsgen.c
+	$(Q) $(HOSTCC) $(HOSTCFLAGS) -o zdsgen.exe zdsgen.c
+
 clean:
 	@rm -f *.o *.a *.dSYM *~ .*.swp
 	@rm -f zdsar zdsar.exe

tools/zds/zdsar.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * tools/zdsar.c
+ * tools/zds/zdsar.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -98,17 +98,6 @@
 #  define HOSTNAME  "Cygwin" /* Cygwin or MSYS under Windows */
 #endif
 
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-enum slashmode_e
-{
-  MODE_FSLASH  = 0,
-  MODE_BSLASH  = 1,
-  MODE_DBLBACK = 2
-};
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -124,11 +113,11 @@ static int   g_debug      = 0;       /* Debug output enabled if >0 */
 static char  g_command[MAX_BUFFER];  /* Full librarian command */
 static char  g_initial_wd[MAX_PATH]; /* Initial working directory */
 static char  g_path[MAX_PATH];       /* Buffer for expanding paths */
-static char  g_objpath[MAX_PATH];    /* Path to the object files */
+static char  g_objpath[MAX_PATH];    /* Temporary for path generation */
 #ifdef HOST_CYGWIN
-static char  g_expand[MAX_EXPAND];   /* Expanded path */
-static char  g_dequoted[MAX_PATH];   /* De-quoted path */
-static char  g_posixpath[MAX_PATH];  /* Full POSIX path */
+static char  g_expand[MAX_EXPAND];   /* Temporary for expanded path */
+static char  g_dequoted[MAX_PATH];   /* Temporary for de-quoted path */
+static char  g_hostpath[MAX_PATH];   /* Temporary for host path conversions */
 #endif
 
 /****************************************************************************
@@ -352,7 +341,7 @@ static bool dequote_path(const char *winpath)
 #endif
 
 /* If using Cygwin with a Window's Toolchain, then we have to convert the
- * POSIX path to a Windows path.
+ * POSIX path to a Windows or POSIX path.
  */
 
 #ifdef HOST_CYGWIN
@@ -366,11 +355,11 @@ static const char *convert_path(const char *path, cygwin_conv_path_t what)
   quoted = dequote_path(path);
   if (quoted)
     {
-      retptr = g_posixpath;
+      retptr = g_hostpath;
     }
   else
     {
-      retptr = &g_posixpath[1];
+      retptr = &g_hostpath[1];
     }
 
   size = cygwin_conv_path(what | CCP_RELATIVE, g_dequoted, NULL, 0);
@@ -382,7 +371,7 @@ static const char *convert_path(const char *path, cygwin_conv_path_t what)
     }
 
   ret = cygwin_conv_path(what | CCP_RELATIVE, g_dequoted,
-                         &g_posixpath[1], MAX_PATH - 3);
+                         &g_hostpath[1], MAX_PATH - 3);
   if (ret < 0)
     {
       fprintf(stderr, "# ERROR: cygwin_conv_path '%s' failed: %s\n",
@@ -393,11 +382,11 @@ static const char *convert_path(const char *path, cygwin_conv_path_t what)
   if (quoted)
     {
       size++;
-      g_posixpath[0] = '"';
-      g_posixpath[size] = '"';
+      g_hostpath[0] = '"';
+      g_hostpath[size] = '"';
     }
 
-  g_posixpath[size + 1] = '\0';
+  g_hostpath[size + 1] = '\0';
   return retptr;
 }
 #endif
@@ -467,7 +456,7 @@ static void parse_args(int argc, char **argv)
   char *objpath = NULL;
   int argidx;
 
-  /* Accumulate ARFLAGS up to "--" */
+  /* Parse arguments */
 
   for (argidx = 1; argidx < argc; argidx++)
     {
@@ -753,6 +742,7 @@ static void do_archive(void)
    * to the librarian.
    */
 
+  lasts = NULL;
   for (; ; )
     {
       /* Copy the librarian into the command buffer */