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Mail Archives: djgpp/2015/06/23/04:39:01

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Date: Tue, 23 Jun 2015 11:38:46 +0300
Message-ID: <CAA2C=vB7B6t6XOiSdAqubtZg04Mw3MW4=15wrj33HR-P1y2qdw@mail.gmail.com>
Subject: Re: dxe3gen patch
From: "Ozkan Sezer (sezeroz AT gmail DOT com)" <djgpp AT delorie DOT com>
To: djgpp AT delorie DOT com
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--001a113f8eaa950e3f05192b51e7
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On 6/13/15, Ozkan Sezer <sezeroz AT gmail DOT com> wrote:
> On 6/5/15, Ozkan Sezer <sezeroz AT gmail DOT com> wrote:
>> On 6/5/15, Ozkan Sezer <sezeroz AT gmail DOT com> wrote:
>>> On 6/5/15, DJ Delorie <dj AT delorie DOT com> wrote:
>>>>
>>>> I'm not opposed to environment variables, but they're a bit messy in a
>>>> unix environment (vs djgpp where we can ship djgpp.env with them ;).
>>>>
>>>
>>> We can provide a sample dxe3gen.sh for it maybe? (more below)
>>>
>>>> If dxegen is built as a native djgpp program, it should be using the
>>>> native djgpp tools (gcc, ld, etc).  Yes?
>>>>
>>>
>>> Of course,
>>>
>>>> If dxegen is cross built, it should note the target prefix (the
>>>> i586-pc-djgpp- part) and change the defaults for the tools to have
>>>> that prefix (i586-pc-djgpp-gcc, etc).  We try to do this with the
>>>> -DDXE_LD option.
>>>>
>>>> If we do both of these correctly, most users shouldn't need to
>>>> override the defaults at all, and then it's not as big a deal that
>>>> they're controlled with environment variables (or cleaner but harder
>>>> command line options).
>>>>
>>>> I don't think it's right for us to *rely* on environment variables to
>>>> provide correct *default* program names, though.
>>>>
>>>
>>> How about the following patch, which extends the -DDXE_?? options
>>> at cross-build time and also adds the DXE_?? environment stuff?
>>> Or, do you prefer something without any environment vars?
>>>
>>>>
>>>> Also, your mailer is wrapping lines, which corrupted the patch in a
>>>> way that really confused me at first:
>>>>
>>>>    /* Prepare the command line for ld */
>>>>    new_argv = (const char **)malloc((argc - 1 + NUMBER_OF_LINKER_ARGS
>>>> + NUMBER_OF_ADDITIONAL_LOADED_LIBS + 2 + 1) * sizeof(char *));
>>>> +  process_env();
>>>>    process_args(argc, argv, new_argv);
>>>>
>>>> Note the column for the wrapped '+' :-)
>>>
>>> Yeah, gmail is to blame.  Attaching the patch too this time.
>>>
> [...]
>>
>> Sigh, the attached fixed one does actually compile.
>> Comments?
>>
>
> PING?
>

PING ^2 ?


> Index: src/makefile.def
> ===================================================================
> RCS file: /cvs/djgpp/djgpp/src/makefile.def,v
> retrieving revision 1.5
> diff -u -r1.5 makefile.def
> --- src/makefile.def	6 Feb 2003 10:40:24 -0000	1.5
> +++ src/makefile.def	5 Jun 2015 08:40:12 -0000
> @@ -26,6 +26,7 @@
>  # For building distributed (djgpp) libraries and programs
>  CROSS_GCC = gcc
>  CROSS_AR = ar
> +CROSS_AS = as
>  CROSS_LD = ld
>  CROSS_STRIP = strip
>  CROSS_BISON = bison
> @@ -33,6 +34,7 @@
>  # For building native programs (hostbin/*); assumes GNU versions
>  GCC = gcc -g
>  AR = ar
> +AS = as
>  LD = ld
>  STRIP = strip
>  BISON = bison
> @@ -47,6 +49,7 @@
>
>  CROSS_GCC = i586-pc-msdosdjgpp-gcc -pipe
>  CROSS_AR = i586-pc-msdosdjgpp-ar
> +CROSS_AS = i586-pc-msdosdjgpp-as
>  CROSS_LD = i586-pc-msdosdjgpp-ld
>  CROSS_STRIP = i586-pc-msdosdjgpp-strip
>  CROSS_BISON = bison
> @@ -56,6 +59,7 @@
>
>  GCC = gcc -g -O2
>  AR = ar
> +AS = as
>  LD = ld
>  STRIP = strip
>  BISON = bison
> Index: src/dxe/makefile
> ===================================================================
> RCS file: /cvs/djgpp/djgpp/src/dxe/makefile,v
> retrieving revision 1.8
> diff -u -r1.8 makefile
> --- src/dxe/makefile	21 Jul 2013 12:25:58 -0000	1.8
> +++ src/dxe/makefile	5 Jun 2015 08:40:12 -0000
> @@ -32,8 +32,9 @@
>  	$(LINK)
>  	$(EXE)
>
> +CROSS_CC = $(word 1,$(CROSS_GCC))
>  $(HOSTBIN)/dxegen.exe : dxe3gen.c init1.h init2.h init3.h init4.h
> init5.h fini1.h fini2.h fini3.h fini4.h fini5.h
> -	$(GCC) -DDXE_LD=\"$(CROSS_LD)\" dxe3gen.c -o $@
> +	$(GCC) -DDXE_LD=\"$(CROSS_LD)\" -DDXE_CC=\"$(CROSS_CC)\"
> -DDXE_AR=\"$(CROSS_AR)\" -DDXE_AS=\"$(CROSS_AS)\" dxe3gen.c -o $@
>
>  clean ::
>  	@-$(MISC) rm *.o *.h $(HOSTBIN)/dxegen.exe
> Index: src/dxe/dxe3gen.c
> ===================================================================
> RCS file: /cvs/djgpp/djgpp/src/dxe/dxe3gen.c,v
> retrieving revision 1.20
> diff -u -r1.20 dxe3gen.c
> --- src/dxe/dxe3gen.c	23 May 2015 08:20:05 -0000	1.20
> +++ src/dxe/dxe3gen.c	5 Jun 2015 08:40:12 -0000
> @@ -165,10 +165,23 @@
>  #endif  /*  !DEBUG_SUPPORT_PRINT_RELOCATION_DIRECTIVES  */
>
>
> +/* Cross compile tool names */
> +#ifndef DXE_CC
> +#define DXE_CC  "gcc"
> +#endif
> +#ifndef DXE_AS
> +#define DXE_AS  "as"
> +#endif
> +#ifndef DXE_AR
> +#define DXE_AR  "ar"
> +#endif
>  #ifndef DXE_LD
> -/* Cross compile ld name/location */
>  #define DXE_LD  "ld"
>  #endif
> +#ifndef DXE_SC
> +#define DXE_SC  "dxe.ld"
> +#endif
> +
>  #ifdef _POSIX_SOURCE
>  /* Linux violates POSIX.1 and defines this, but it shouldn't.. */
>  #undef _POSIX_SOURCE
> @@ -297,6 +310,15 @@
>  };
>
>
> +static char *libdir;
> +/* build tools */
> +static char *dxe_cc; /* default: "gcc" */
> +static char *dxe_as; /* default: "as" */
> +static char *dxe_ar; /* default: "ar" */
> +static char *dxe_ld; /* default: "ld" */
> +/* linker script */
> +static char *dxe_sc; /* default: "dxe.ld" */
> +
>
>  /* Desc: replaces backslash with slash in a path
>   *
> @@ -410,6 +432,45 @@
>
>
>
> +/* Desc: process the DXE_?? environment variables
> + */
> +static void process_env(void)
> +{
> +  const char *e;
> +
> +  if ((e = getenv("DXE_CC")) != NULL)
> +       dxe_cc = strdup(e);
> +  else dxe_cc = strdup(DXE_CC);
> +
> +  if ((e = getenv("DXE_AS")) != NULL)
> +       dxe_as = strdup(e);
> +  else dxe_as = strdup(DXE_AS);
> +
> +  if ((e = getenv("DXE_AR")) != NULL)
> +       dxe_ar = strdup(e);
> +  else dxe_ar = strdup(DXE_AR);
> +
> +  if ((e = getenv("DXE_LD")) != NULL)
> +       dxe_ld = strdup(e);
> +  else dxe_ld = strdup(DXE_LD);
> +
> +  if ((e = getenv("DXE_SC")) != NULL)
> +       dxe_sc = strdup(e);
> +  else dxe_sc = strdup(DXE_SC);
> +
> +  if ((e = getenv("DXE_LD_LIBRARY_PATH")) != NULL)
> +       libdir = strdup(e);
> +  else if ((e = getenv("DJDIR")) != NULL) {
> +       size_t sz = strlen(e) + 5U;
> +       libdir = malloc(sz);
> +       strcpy(libdir, e);
> +       strcat(libdir, "/lib");
> +       canonicalize_path(libdir);
> +  }
> +  else libdir = NULL;
> +}
> +
> +
>  /* Desc: process command line args
>   *
>   * In  : no of arguments, argument list, ptr to store linker args
> @@ -419,30 +480,15 @@
>   */
>  static void process_args(int argc, char *argv[], const char *new_argv[])
>  {
> -  static char libdir[FILENAME_MAX];
> -  char *p;
>    int i, new_argc = NUMBER_OF_LINKER_ARGS;
>
> -  p = getenv("DXE_LD_LIBRARY_PATH");
> -  if (p)
> -    strcpy(libdir, p);
> -  else
> +  if (!libdir)
>    {
> -    p = getenv("DJDIR");
> -    if (p)
> -    {
> -      strcpy(libdir, p);
> -      strcat(libdir, "/lib");
> -      canonicalize_path(libdir);
> -    }
> -    else
> -    {
>        fprintf(stderr, "Error: neither DXE_LD_LIBRARY_PATH nor DJDIR
> are set in environment\n");
>        exit(1);
> -    }
>    }
>
> -  new_argv[0] = DXE_LD;
> +  new_argv[0] = dxe_ld;
>    new_argv[1] = "-X";
>    new_argv[2] = "-S";
>    new_argv[3] = "-r";
> @@ -451,7 +497,7 @@
>    new_argv[6] = "-L";
>    new_argv[7] = libdir;
>    new_argv[8] = "-T";
> -  new_argv[9] = "dxe.ld";
> +  new_argv[9] = dxe_sc;
>
>    if (!strcmp(base_name(argv[0]), "dxegen"))
>      /* invoked as `dxegen' */
> @@ -736,7 +782,7 @@
>    if ((rv = my_spawn(argv)) != 0)
>    {
>      if (rv == -1)
> -      perror(DXE_LD);
> +      perror("ld");
>      exit(rv);
>    }
>
> @@ -861,7 +907,7 @@
>        if (rv)
>        {
>          if (rv == -1)
> -          perror(DXE_LD);
> +          perror("ld");
>          exit(rv);
>        }
>
> @@ -1336,7 +1382,8 @@
>      }
>
>      /* Pre-compile the resolver's output. */
> -    rv = system("gcc -o "TEMP_S_FILE" -O2 -S "TEMP_BASE".c");
> +    sprintf(cmdbuf, "%s -o %s -O2 -S %s.c", dxe_cc, TEMP_S_FILE,
> TEMP_BASE);
> +    rv = system(cmdbuf);
>      remove(TEMP_BASE".c");
>      if (rv != 0)
>      {
> @@ -1420,7 +1467,8 @@
>    atexit(exit_cleanup);
>
>    /* Allright, now run the assembler on the resulting file */
> -  if ((rv = system("as -o "TEMP_O_FILE" "TEMP_S_FILE)) != 0)
> +  sprintf(cmdbuf, "%s -o %s %s", dxe_as, TEMP_O_FILE, TEMP_S_FILE);
> +  if ((rv = system(cmdbuf)) != 0)
>    {
>      if (rv == -1)
>        perror("as");
> @@ -1428,7 +1476,7 @@
>    }
>
>    /* Okey-dokey, let's stuff the object file into the archive */
> -  sprintf(cmdbuf, "ar crs %s "TEMP_O_FILE, opt.implib);
> +  sprintf(cmdbuf, "%s crs %s "TEMP_O_FILE, dxe_ar, opt.implib);
>    if ((rv = system(cmdbuf)) != 0)
>    {
>      if (rv == -1)
> @@ -1512,6 +1560,7 @@
>    progname = argv[0];
>    /* Prepare the command line for ld */
>    new_argv = (const char **)malloc((argc - 1 + NUMBER_OF_LINKER_ARGS
> + NUMBER_OF_ADDITIONAL_LOADED_LIBS + 2 + 1) * sizeof(char *));
> +  process_env();
>    process_args(argc, argv, new_argv);
>
>    if (opt.showdep || opt.showexp || opt.showunres)
>
> --
> O.S.
>

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