[6model/c] start Configure.bat and MSVC support - incomplete

c/.gitignore

@@ -0,0 +1 @@
+Makefile

c/Configure.bat

@@ -0,0 +1,71 @@
+:: Configure.bat
+
+:: Currently this script assumes Microsoft Visual C++ Express 2010.
+:: The TODO comments below describe several future alternatives.
+
+:: !!! FUD WARNING !!!
+:: Microsoft thinks that C programmers should rewrite every call to,
+:: for example, strcpy, replacing it with their more "secure"
+:: replacement called strcpy_s, which takes additional paramaters to
+:: avoid buffer overruns.  Microsoft's C compilers emit many loud
+:: warnings containing weasel words such as "fopen ... may be unsafe".
+:: http://msdn.microsoft.com/en-us/library/8ef0s5kh%28v=VS.100%29.aspx
+:: Talk about a brazen lock-in attempt!  Since other target platforms
+:: are not blessed with strcpy_s and so on, this project opts to
+:: continue using the "older, less secure functions" and disable the
+:: warnings with -D_CRT_SECURE_NO_WARNINGS
+
+set opts=-Wall -D_CRT_SECURE_NO_WARNINGS
+
+@echo off
+:: echo Compiling tools/build/Configure.c to Configure.exe
+cl %opts% -Fotools\build\Configure.obj -Fetools\build\Configure.exe tools\build\Configure.c
+:: echo Starting tools\build\Configure.exe
+del tools\build\Configure.obj
+tools\build\Configure.exe tools\build\Makefile.in Makefile
+
+:: Notes
+
+:: Configure.bat or Configure.cmd?
+:: There is almost no difference between the two file types (just something
+:: subtle about errorlevel), and in 6model/c they work the same.  So on user
+:: friendliness grounds, .bat reassures the reader that the script will do
+:: only "simple" things.
+:: You could argue it the other way - we use cmd.exe, not command.com, so we
+:: should use the extension that command.com cannot handle.  Dunno...
+
+:: TODO
+
+:: Evaluate potential Win32 C compilers and development environments
+:: http://www.thefreecountry.com/compilers/cpp.shtml
+:: Most of them alias cc to their own filenames.
+
+:: msysGit
+:: The full install is a 39MB download instead of the 13MB Git install, but it expands to 1.3GB instead of
+:: about 200MB, and includes MinGW, which includes GCC.
+
+:: MinGW
+:: http://www.mingw.org/
+:: Also bundled with the Git full install.  It includes bash, so use Configure.sh rather than Configure.bat
+:: The libraries do not include dlopen.
+
+:: lcc-win32
+:: http://www.cs.virginia.edu/~lcc-win32/
+
+:: Microsoft Visual C++ Express Edition 1-2GB RAM, 3GB disk
+:: Downloads a 3.2MB web installer.
+:: http://www.microsoft.com/express/vc/ do not need optional SQL express.
+:: Does install Windows Installer 4.5, .NET Framework 4, SQL Server Compact 3.5, Help Viewer 1.0
+:: (download 146MB, disk space 2.3GB)
+
+:: Borland
+:: Registration required
+
+:: Tiny C Compiler
+:: http://bellard.org/tcc/
+
+:: OpenWatCom
+:: http://www.openwatcom.org/index.php/Download
+
+:: Digital Mars
+:: http://www.digitalmars.com/download/freecompiler.html

c/tools/build/Configure.c

@@ -2,7 +2,7 @@
 /* Compiled and run by 6model/c/Configure.(sh|bat) */
 
 #include <stdio.h>
-#include <stdlib.h>
+#include <stdlib.h>  /* getenv */
 #include <string.h>
 
 #define LINEBUFFERSIZE 128
@@ -104,9 +104,23 @@ int
 main(int argc, char * argv[])
 {
     char * makefiletext;
+    enum { GCC, MSVC } c_compiler;
+    if (argc < 2) {
+        fprintf(stderr, "Usage: %s path/to/Makefile.in path/to/Makefile\n");
+        exit(1);
+    }
+    printf("%s is converting %s to %s\n", argv[0], argv[1], argv[2]);
+
+    /* Quick and dirty OS check to decide which compiler to use */
+    c_compiler = getenv("HOME") ? GCC : MSVC;
     makefiletext = slurp(argv[1]);
     subst(&makefiletext, "# Makefile.in",    "# Makefile");
     subst(&makefiletext, "This is the file", "This is NOT the file");
+    subst(&makefiletext, "@cc@",  c_compiler == GCC ? "cc"   : "cl"    );
+    subst(&makefiletext, "@exe@", c_compiler == GCC ? ""     : ".exe"  );
+    subst(&makefiletext, "@ldl@", c_compiler == GCC ? "-ldl" : "-DWIN" );
+    subst(&makefiletext, "@o@",   c_compiler == GCC ? "-o"   : "-Fo"   );
+    subst(&makefiletext, "@win@", c_compiler == GCC ? ""     : "-DWIN" );
     squirt(makefiletext, argv[2]);
     free(makefiletext);
     return 0;

c/tools/build/Makefile.in

@@ -6,16 +6,23 @@
 
 # Targets that do not produce files (tells make not to waste time
 # checking that such files exist).
+
 .PHONY: clean test test01 test02
 
+CC   = @cc@
+EXE  = @exe@
+LDL  = @ldl@
+O    = @o@
+WIN  = @win@
+
 t/01-toolchain/01a-cc.exe: t/01-toolchain/01a-cc.c
-	cc -ldl -o t/01-toolchain/01a-cc.exe t/01-toolchain/01a-cc.c
+	$(CC) $(WIN) $(LDL) $(O)t/01-toolchain/01a-cc.exe t/01-toolchain/01a-cc.c
 
 t/01-toolchain/01b-icu.exe: t/01-toolchain/01b-icu.c
-	cc -ldl -o t/01-toolchain/01b-icu.exe t/01-toolchain/01b-icu.c
+	$(CC) $(WIN) $(LDL) $(O)t/01-toolchain/01b-icu.exe t/01-toolchain/01b-icu.c
 
 t/02-components/02a-hashtable.exe: t/02-components/02a-hashtable.c
-	cc -o t/02-components/02a-hashtable.exe t/02-components/02a-hashtable.c
+	$(CC) $(WIN) $(O)t/02-components/02a-hashtable.exe t/02-components/02a-hashtable.c
 
 test01: t/01-toolchain/01a-cc.exe t/01-toolchain/01b-icu.exe
 	prove -e '' --ext '.exe' t/01-toolchain