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system.c
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/*-
* Copyright (c) 1998, 2002-2008 Kiyoshi Matsui <[email protected]>
* All rights reserved.
*
* Some parts of this code are derived from the public domain software
* DECUS cpp (1984,1985) written by Martin Minow.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* S Y S T E M . C
* S y s t e m D e p e n d e n t R o u t i n e s
*
* Routines dependent on O.S., compiler or compiler-driver.
* To port MCPP for the systems not yet ported, you must
* 1. specify the constants in "configed.H" or "noconfig.H",
* 2. append the system-dependent routines in this file.
*/
#include "system.H"
#include "internal.H"
#if HOST_SYS_FAMILY == SYS_UNIX
#include "unistd.h" /* For getcwd(), readlink() */
#elif HOST_COMPILER == MSC || HOST_COMPILER == LCC
#include "direct.h"
#define getcwd( buf, size) _getcwd( buf, size)
#elif HOST_COMPILER == BORLANDC
#include "dir.h"
#endif
#include "sys/types.h"
#include "sys/stat.h" /* For stat() */
#if ! defined( S_ISREG)
#define S_ISREG( mode) (mode & S_IFREG)
#define S_ISDIR( mode) (mode & S_IFDIR)
#endif
#if HOST_COMPILER == MSC
#define S_IFREG _S_IFREG
#define S_IFDIR _S_IFDIR
#define stat( path, stbuf) _stat( path, stbuf)
#endif
/* Function to compare path-list */
#if FNAME_FOLD
#if HOST_COMPILER == GNUC /* CYGWIN, MINGW, MAC */
#include <strings.h> /* POSIX 1, 2001 */
#define str_case_eq( str1, str2) (strcasecmp( str1, str2) == 0)
#else /* MSC, BORLANDC, LCC */
#if HOST_COMPILER == MSC
#define stricmp( str1, str2) _stricmp( str1, str2)
#endif
#define str_case_eq( str1, str2) (stricmp( str1, str2) == 0)
#endif
#else /* ! FNAME_FOLD */
#define str_case_eq( str1, str2) (strcmp( str1, str2) == 0)
#endif
/*
* PATH_DELIM is defined for the O.S. which has single byte path-delimiter.
* Note: '\\' or any other character identical to second byte of MBCHAR should
* not be used for PATH_DELIM for convenience of path-list parsing.
*/
#if SYS_FAMILY == SYS_UNIX || SYS_FAMILY == SYS_WIN || SYSTEM == SYS_UNKNOWN
#define PATH_DELIM '/'
#define SPECIAL_PATH_DELIM FALSE
#else /* Any other path-delimiter, define PATH_DELIM by yourself */
#define SPECIAL_PATH_DELIM TRUE /* Any path-delimiter other than '/' */
#endif
/*
* OBJEXT is the suffix to denote "object" file.
*/
#ifndef OBJEXT
#if SYS_FAMILY == SYS_UNIX || HOST_COMPILER == GNUC
#define OBJEXT "o"
#elif SYS_FAMILY == SYS_WIN
#define OBJEXT "obj"
#elif 1
/* Add here appropriate definitions for other systems. */
#endif
#endif
static void version( void);
/* Print version message */
static void usage( int opt);
/* Putout usage of MCPP */
static void set_opt_list( char * optlist);
/* Set list of legal option chars */
static void def_a_macro( int opt, char * def);
/* Do a -D option */
static void chk_opts( int sflag, int trad);
/* Check consistency of options */
static void init_predefines( void);
/* Set and unset predefined macros */
static void init_std_defines( void);
/* Predefine Standard macros */
static void set_limit( void);
/* Set minimum translation limits */
static void put_info( FILEINFO * sharp_file);
/* Print compiler-specific-inf */
static char * set_files( int argc, char ** argv, char ** in_pp
, char ** out_pp);
/* Set input, output, diagnostic */
static void set_sys_dirs( int set_cplus_dir);
/* Set system-specific include dirs */
static void set_env_dirs( void);
/* Set user-defined include dirs */
static void parse_env( const char * env);
/* Parse environment variables */
static void set_a_dir( const char * dirname);
/* Append an include directory */
static char * norm_dir( const char * dirname, int framework);
/* Normalize include directory path */
static char * norm_path( const char * dir, const char * fname, int inf
, int hmap); /* Normalize pathname to compare */
#if SYS_FAMILY == SYS_UNIX
static void deref_syml( char * slbuf1, char * slbuf2, char * chk_start);
/* Dereference symbolic linked directory and file */
#endif
static void def_macros( void);
/* Define macros specified by -D */
static void undef_macros( void);
/* Undefine macros specified by -U */
static char * md_init( const char * filename, char * output);
/* Initialize makefile dependency */
static char * md_quote( char * output);
/* 'Quote' special characters */
static int open_include( char * filename, int searchlocal, int next);
/* Open the file to include */
static int has_directory( const char * source, char * directory);
/* Get directory part of fname */
static int is_full_path( const char * path);
/* The path is absolute path list ? */
static int search_dir( char * filename, int searchlocal, int next);
/* Search the include directories */
static int open_file( const char ** dirp, const char * src_dir
, const char * filename, int local, int include_opt, int sys_frame);
/* Open a source file */
static const char * set_fname( const char * filename);
/* Remember the source filename */
#if 0 /* This function is only for debugging use */
static int chk_dirp( const char ** dirp);
/* Check validity of dirp arg for open_file() */
#endif
static void cur_file( FILEINFO * file, FILEINFO * sharp_file, int marker);
/* Output current source file name */
#if SYS_FAMILY == SYS_WIN
static char * bsl2sl( char * filename);
/* Convert \ to / in path-list */
#endif
static int is_junk( void);
/* The directive has trailing junk? */
static void do_once( const char * fullname);
/* Process #pragma once */
static int included( const char * fullname);
/* The file has been once included? */
static void push_or_pop( int direction);
/* Push or pop a macro definition */
static void do_preprocessed( void);
/* Process preprocessed file */
static int do_debug( int set);
/* #pragma MCPP debug, #debug */
static void dump_path( void);
/* Print include search path */
static int mcpp_getopt( int argc, char * const * argv, const char * opts);
/* getopt() to prevent linking of glibc getopt */
/* for mcpp_getopt() */
static int mcpp_optind = 1;
static int mcpp_opterr = 1;
static int mcpp_optopt;
static char * mcpp_optarg;
static int mb_changed = FALSE; /* Flag of -e option */
static char cur_work_dir[ PATHMAX + 1]; /* Current working directory*/
/*
* incdir[] stores the -I directories (and the system-specific #include <...>
* directories). This is set by set_a_dir(). A trailing PATH_DELIM is
* appended if absent.
*/
static const char ** incdir; /* Include directories */
static const char ** incend; /* -> active end of incdir */
static int max_inc; /* Number of incdir[] */
typedef struct inc_list { /* List of directories or files */
char *name; /* Filename or directory-name */
size_t len; /* Length of 'name' */
} INC_LIST;
/*
* fnamelist[] stores the souce file names opened by #include directive for
* debugging information.
*/
static INC_LIST * fnamelist; /* Source file names */
static INC_LIST * fname_end; /* -> active end of fnamelist */
static int max_fnamelist; /* Number of fnamelist[] */
/* once_list[] stores the #pragma once file names. */
static INC_LIST * once_list; /* Once opened file */
static INC_LIST * once_end; /* -> active end of once_list */
static int max_once; /* Number of once_list[] */
#define INIT_NUM_INCLUDE 32 /* Initial number of incdir[] */
#define INIT_NUM_FNAMELIST 256 /* Initial number of fnamelist[] */
#define INIT_NUM_ONCE 64 /* Initial number of once_list[] */
/*
* 'search_rule' holds searching rule of #include "header.h" to search first
* before searching user specified or system-specific include directories.
* 'search_rule' is initialized to SEARCH_INIT. It can be changed by -I1, -I2
* or -I3 option. -I1 specifies CURRENT, -I2 SOURCE and -I3 both.
*/
static int search_rule = SEARCH_INIT; /* Rule to search include file */
static int nflag = FALSE; /* Flag of -N (-undef) option */
static long std_val = -1L; /* Value of __STDC_VERSION__ or __cplusplus */
#define MAX_DEF 256
#define MAX_UNDEF (MAX_DEF/4)
static char * def_list[ MAX_DEF]; /* Macros to be defined */
static char * undef_list[ MAX_UNDEF]; /* Macros to be undefined */
static int def_cnt; /* Count of def_list */
static int undef_cnt; /* Count of undef_list */
/* Values of mkdep. */
#define MD_MKDEP 1 /* Output source file dependency line */
#define MD_SYSHEADER 2 /* Print also system-header names */
#define MD_FILE 4 /* Output to the file named *.d */
#define MD_PHONY 8 /* Print also phony targets for each header */
#define MD_QUOTE 16 /* 'Quote' $ and space in target name */
static FILE * mkdep_fp; /* For -Mx option */
static char * mkdep_target;
/* For -MT TARGET option and for GCC's queer environment variables. */
static char * mkdep_mf; /* Argument of -MF option */
static char * mkdep_md; /* Argument of -MD option */
static char * mkdep_mq; /* Argument of -MQ option */
static char * mkdep_mt; /* Argument of -MT option */
/* sharp_filename is filename for #line line, used only in cur_file() */
static char * sharp_filename = NULL;
static char * argv0; /* argv[ 0] for usage() and version() */
static int compat_mode;
/* "Compatible" mode of recursive macro expansion */
#if SYSTEM == SYS_CYGWIN
static int no_cygwin = FALSE; /* -mno-cygwin */
#endif
#define NO_DIR FALSE
#if NO_DIR
/* Unofficial feature to strip directory part of include file */
static int no_dir;
#endif
void init_system( void)
/* Initialize static variables */
{
if (sharp_filename)
free( sharp_filename);
sharp_filename = NULL;
incend = incdir = NULL;
fnamelist = once_list = NULL;
search_rule = SEARCH_INIT;
mb_changed = nflag = compat_mode = FALSE;
mkdep_fp = NULL;
mkdep_target = mkdep_mf = mkdep_md = mkdep_mq = mkdep_mt = NULL;
std_val = -1L;
def_cnt = undef_cnt = 0;
mcpp_optind = mcpp_opterr = 1;
#if SYSTEM == SYS_CYGWIN
no_cygwin = FALSE;
#endif
#if NO_DIR
no_dir = FALSE;
#endif
}
#define OPTLISTLEN 80
void do_options(
int argc,
char ** argv,
char ** in_pp, /* Input file name */
char ** out_pp /* Output file name */
)
/*
* Process command line arguments, called only at MCPP startup.
*/
{
char optlist[ OPTLISTLEN]; /* List of option letter*/
int opt;
int unset_sys_dirs;
/* Unset system-specific and site-specific include directories ? */
int set_cplus_dir; /* Set C++ include directory ? (for GCC)*/
int show_path; /* Show include directory list */
int sflag; /* -S option or similar */
int trad; /* -traditional */
int i;
argv0 = argv[ 0];
nflag = unset_sys_dirs = show_path = sflag = trad = FALSE;
set_cplus_dir = TRUE;
/* Get current directory for -I option and #pragma once */
getcwd( cur_work_dir, PATHMAX);
#if SYS_FAMILY == SYS_WIN
bsl2sl( cur_work_dir);
#endif
sprintf( cur_work_dir + strlen( cur_work_dir), "%c%c", PATH_DELIM, EOS);
/* Append trailing path-delimiter */
set_opt_list( optlist);
opt_search: ;
while (mcpp_optind < argc
&& (opt = mcpp_getopt( argc, argv, optlist)) != EOF) {
switch (opt) { /* Command line option character */
case 'C': /* Keep comments */
option_flags.c = TRUE;
break;
case 'D': /* Define symbol */
if (def_cnt >= MAX_DEF) {
mcpp_fputs( "Too many -D options.\n", ERR);
longjmp( error_exit, -1);
}
def_list[ def_cnt++] = mcpp_optarg;
break;
case 'e':
// We support this option, but it does nothing.
break;
case 'I': /* Include directory */
if (str_eq( mcpp_optarg, "-")) { /* -I- */
unset_sys_dirs = TRUE;
/* Unset pre-specified include directories */
} else if (*(mcpp_optarg + 1) == EOS && isdigit( *mcpp_optarg)
&& (i = *mcpp_optarg - '0') != 0
&& (i & ~(CURRENT | SOURCE)) == 0) {
search_rule = i; /* -I1, -I2 or -I3 */
} else { /* Not '-' nor a digit */
set_a_dir( mcpp_optarg); /* User-defined dir */
}
break;
case 'M': /* Output source file dependency line */
if (argv[ mcpp_optind - 1] == mcpp_optarg) { /* -M */
mkdep |= MD_SYSHEADER;
mcpp_optind--;
} else {
usage( opt);
}
mkdep |= MD_MKDEP;
break;
case 'U': /* Undefine macro */
if (undef_cnt >= MAX_UNDEF) {
mcpp_fputs( "Too many -U options.\n", ERR);
longjmp( error_exit, -1);
}
undef_list[ undef_cnt++] = mcpp_optarg;
break;
default: /* What is this one? */
usage( opt);
break;
} /* Switch on all options */
} /* For all arguments */
if (mcpp_optind < argc && set_files( argc, argv, in_pp, out_pp) != NULL)
goto opt_search; /* More options after the filename */
/* Check consistency of specified options, set some variables */
chk_opts( sflag, trad);
if (warn_level == -1) /* No -W option */
warn_level = 1; /* Default warning level */
else if (warn_level == 0xFF)
warn_level = 0; /* -W0 has high precedence */
set_env_dirs();
if (! unset_sys_dirs)
set_sys_dirs( set_cplus_dir);
if (mkdep_mf) { /* -MF overrides -MD */
mkdep_fp = mcpp_fopen( mkdep_mf, "w");
} else if (mkdep_md) {
mkdep_fp = mcpp_fopen( mkdep_md, "w");
}
if (mkdep_mq) /* -MQ overrides -MT */
mkdep_target = mkdep_mq;
else if (mkdep_mt)
mkdep_target = mkdep_mt;
/* Normalize the path-list */
if (*in_pp && ! str_eq( *in_pp, "-")) {
char * tmp = norm_path( null, *in_pp, FALSE, FALSE);
if (tmp) /* The file exists */
*in_pp = tmp;
/* Else mcpp_main() will diagnose *in_pp and exit */
}
if (! (mcpp_debug & MACRO_CALL)) {
if (show_path) {
fp_debug = stderr;
dump_path();
fp_debug = stdout;
}
}
}
static void version( void)
/*
* Print version message.
*/
{
const char * mes[] = {
/* Write messages here, for example, "MySomeTool with ". */
"MCPP V.2.7.2 (2008/11)"
, "https://github.com/zeroc-ice/mcpp"
, "compiler-independent-build "
, NULL
};
const char ** mpp = mes;
while (*mpp)
mcpp_fputs( *mpp++, ERR);
}
static void usage(
int opt
)
/*
* Print usage.
*/
{
const char * mes[] = {
"Usage: ",
"mcpp",
" [-<opts> [-<opts>]] [<infile> [-<opts>] [<outfile>] [-<opts>]]\n",
" <infile> defaults to stdin and <outfile> defaults to stdout.\n",
"\nCommonly used options:\n",
"-C Output also comments.\n",
"-D <macro>[=<value>] Define <macro> as <value> (default:1).\n",
"-D <macro(args)>[=<replace>] Define <macro(args)> as <replace>.\n",
"-e <encoding> Change the default multi-byte character encoding to one of:\n",
" euc_jp, gb2312, ksc5601, big5, sjis, iso2022_jp, utf8.\n",
"-I <directory> Add <directory> to the #include search list.\n",
"-I- Unset system or site specific include directories.\n",
"-M file\n",
" Output source file dependency line for makefile.\n",
"-U <macro> Undefine <macro>.\n",
"\nFor further details see mcpp-manual.html.\n",
NULL,
};
const char * illegopt = "Incorrect option -%c%s\n";
const char * const * mpp = mes;
if (opt != '?')
mcpp_fprintf( ERR, illegopt, opt, mcpp_optarg ? mcpp_optarg : null);
version();
mes[ 1] = argv0;
while (*mpp)
mcpp_fputs( *mpp++, ERR);
longjmp( error_exit, -1);
}
static void set_opt_list(
char * optlist
)
/*
* Set list of legal option characters.
*/
{
const char * list[] = {
#if ! STD_LINE_PREFIX
"b",
#endif
#if SYS_FAMILY == SYS_UNIX
"m:",
#endif
"a",
NULL
};
const char * const * lp = & list[ 0];
strcpy( optlist, "e:CD:I:M:U:");
/* Default options */
while (*lp)
strcat( optlist, *lp++);
if (strlen( optlist) >= OPTLISTLEN)
cfatal( "Bug: Too long option list", NULL, 0L, NULL); /* _F_ */
}
static void def_a_macro(
int opt, /* 'D' */
char * def /* Argument of -D option */
)
/*
* Define a macro specified by -D option.
* The macro maybe either object-like or function-like (with parameter).
*/
{
DEFBUF * defp;
char * definition; /* Argument of -D option */
char * cp;
int i;
definition = xmalloc( strlen( def) + 4);
strcpy( definition, def);
if ((cp = strchr( definition, '=')) != NULL) {
*cp = ' '; /* Remove the '=' */
cp = "\n"; /* Append <newline> */
} else {
cp = " 1\n"; /* With definition "1" */
}
strcat( definition, cp);
cp = definition;
while ((char_type[ *cp & UCHARMAX] & SPA) == 0)
cp++;
i = *cp;
*cp = EOS;
if ((defp = look_id( definition)) != NULL) /* Pre-defined */
undefine( definition);
*cp = i;
/* Now, save the definition. */
unget_string( definition, NULL);
if (do_define( FALSE, 0) == NULL) /* Define a macro */
usage( opt);
*cp = EOS;
if (str_eq( definition, "__STDC__")) {
defp = look_id( definition);
defp->nargs = DEF_NOARGS_STANDARD;
/* Restore Standard-predefinedness */
}
free( definition);
skip_nl(); /* Clear the appended <newline> */
}
static void chk_opts(
int sflag, /* Flag of Standard or post-Standard mode */
int trad /* -traditional (GCC only) */
)
/*
* Check consistency between the specified options.
* Set default value of some variables for each 'mcpp_mode'.
*/
{
int incompat = FALSE;
if (trad)
incompat = TRUE;
if (! stdc_val)
stdc_val = STDC;
if (compat_mode)
incompat = TRUE;
if ((mcpp_debug & MACRO_CALL)
&& option_flags.c) {
mcpp_fputs( "Disabled -K option.\n", ERR);
mcpp_debug &= ~MACRO_CALL;
/* -a and -C options do not co-exist with -K */
}
if (incompat) {
mcpp_fputs( "Incompatible options are specified.\n", ERR);
usage( '?');
}
expand_init( compat_mode);
/* Set function pointer to macro expansion routine */
}
static void init_predefines( void)
/*
* Set or unset predefined macros.
*/
{
char tmp[ 16];
stdc_ver = stdc_val ? STDC_VERSION : 0L;
if (nflag) {
un_predefine( TRUE);
} else if (stdc_val) {
un_predefine( FALSE); /* Undefine "unix" or so */
}
sprintf( tmp, "%ldL", stdc_ver);
if (stdc_ver)
look_and_install( "__STDC_VERSION__", DEF_NOARGS_STANDARD, null
, tmp);
#ifdef COMPILER_CPLUS
if (! nflag) /* Undefine pre-defined macro for C++ */
undefine( COMPILER_CPLUS);
#endif
set_limit();
init_std_defines();
}
static void init_std_defines( void)
/*
* For STD and POST_STD modes.
* The magic pre-defines are initialized with magic argument counts.
* expand_macro() notices this and calls the appropriate routine.
* DEF_NOARGS is one greater than the first "magic" definition.
* 'DEF_NOARGS - n' are reserved for pre-defined macros.
* __STDC_VERSION__ and __cplusplus are defined by chk_opts() and set_cplus().
*/
{
char tmp[ 16];
char timestr[ 14];
time_t tvec;
char * tstring;
look_and_install( "__LINE__", DEF_NOARGS_DYNAMIC - 1, null, "-1234567890");
/* Room for 11 chars (10 for long and 1 for '-' in case of wrap round. */
look_and_install( "__FILE__", DEF_NOARGS_DYNAMIC - 2, null, null);
/* Should be stuffed */
/* Define __DATE__, __TIME__ as present date and time. */
time( &tvec);
tstring = ctime( &tvec);
sprintf( timestr, "\"%.3s %c%c %.4s\"",
tstring + 4,
*(tstring + 8) == '0' ? ' ' : *(tstring + 8),
*(tstring + 9),
tstring + 20);
look_and_install( "__DATE__", DEF_NOARGS_DYNAMIC, null, timestr);
sprintf( timestr, "\"%.8s\"", tstring + 11);
look_and_install( "__TIME__", DEF_NOARGS_DYNAMIC, null, timestr);
if (! look_id( "__STDC_HOSTED__")) {
/*
* Some compilers, e.g. GCC older than 3.3, define this macro by
* -D option.
*/
sprintf( tmp, "%d", STDC_HOSTED);
look_and_install( "__STDC_HOSTED__", DEF_NOARGS_PREDEF, null, tmp);
}
/* Define __STDC__ as 1 or such for Standard conforming compiler. */
if (! look_id( "__STDC__")) {
sprintf( tmp, "%d", stdc_val);
look_and_install( "__STDC__", DEF_NOARGS_STANDARD, null, tmp);
}
}
#define LINE90LIMIT 32767
#define LINE_CPLUS_LIMIT 32767
static void set_limit( void)
/*
* Set the minimum translation limits specified by the Standards.
*/
{
/* Specified by C 1990 Standard */
std_limits.str_len = SLEN90MIN;
std_limits.id_len = IDLEN90MIN;
std_limits.n_mac_pars = NMACPARS90MIN;
std_limits.exp_nest = EXP_NEST90MIN;
std_limits.blk_nest = BLK_NEST90MIN;
std_limits.inc_nest = INCLUDE_NEST90MIN;
std_limits.n_macro = NMACRO90MIN;
std_limits.line_num = LINE90LIMIT;
}
void init_sys_macro( void)
/*
* Define system-specific macros and some Standard required macros
* and undefine macros specified by -U options.
*/
{
/* This order is important. */
def_macros(); /* Define macros specified by -D */
init_predefines(); /* Define predefined macros */
undef_macros(); /* Undefine macros specified by -U */
if (mcpp_debug & MACRO_CALL)
dump_def( FALSE, TRUE); /* Finally putout current macro names */
}
void at_start( void)
/*
* Do the commands prior to processing main source file after do_options().
*/
{
FILEINFO * file_saved = infile;
// We don't support changing the encodings.
put_info( file_saved);
}
static void put_info(
FILEINFO * sharp_file
)
/*
* Putout compiler-specific information.
*/
{
if (no_output)
return;
sharp_file->line++;
sharp( sharp_file, 0);
sharp_file->line--;
}
static char * set_files(
int argc,
char ** argv,
char ** in_pp,
char ** out_pp
)
/*
* Set input and/or output files.
*/
{
char * cp;
if (*in_pp == NULL) { /* Input file */
cp = argv[ mcpp_optind++];
#if SYS_FAMILY == SYS_WIN
cp = bsl2sl( cp);
#endif
*in_pp = cp;
}
if (mcpp_optind < argc && argv[ mcpp_optind][ 0] != '-'
&& *out_pp == NULL) {
cp = argv[ mcpp_optind++];
#if SYS_FAMILY == SYS_WIN
cp = bsl2sl( cp);
#endif
*out_pp = cp; /* Output file */
}
if (mcpp_optind >= argc)
return NULL; /* Exhausted command line arguments */
if (argv[ mcpp_optind][ 0] == '-')
return argv[ mcpp_optind]; /* More options */
cfatal( "Excessive file argument \"%s\"", argv[ mcpp_optind], 0L , NULL);
return NULL;
}
static void set_env_dirs( void)
/*
* Add to include path those specified by environment variables.
*/
{
const char * env;
if ((env = getenv( ENV_C_INCLUDE_DIR)) != NULL)
parse_env( env);
}
static void parse_env(
const char * env
)
/*
* Parse environmental variable and append the path to include-dir-list.
*/
{
char * save;
char * save_start;
char * p;
int sep;
save = save_start = save_string( env);
while (*save) {
p = save;
while (*p && *p != ENV_SEP)
p++;
if (p != save) { /* Variable separator */
sep = *p;
*p = EOS;
set_a_dir( save);
if (sep == EOS)
break;
save = ++p;
}
while (*save == ENV_SEP)
++save;
}
free( save_start);
}
static void set_sys_dirs(
int set_cplus_dir /* Set C++ include-directory too */
)
/*
* Set site-specific and system-specific directories to the include directory
* list.
*/
{
#if SYS_FAMILY == SYS_UNIX
set_a_dir( "/usr/local/include");
#endif
#ifdef C_INCLUDE_DIR1
set_a_dir( C_INCLUDE_DIR1);
#endif
#ifdef C_INCLUDE_DIR2
set_a_dir( C_INCLUDE_DIR2);
#endif
#if SYS_FAMILY == SYS_UNIX
#if SYSTEM == SYS_CYGWIN
if (no_cygwin) /* -mno-cygwin */
set_a_dir( "/usr/include/mingw");
else
set_a_dir( "/usr/include");
#else
set_a_dir( "/usr/include"); /* Should be placed after C_INCLUDE_DIR? */
#endif
#endif
}
static void set_a_dir(
const char * dirname /* The path-name */
)
/*
* Append an include directory.
* This routine is called from the following routines (in this order).
* 1. do_options() by -I option.
* 2. do_options() by -isystem option (for GNUC).
* 3. set_env_dirs() by environment variables.
* 4. set_sys_dirs() by CPLUS_INCLUDE_DIR?, C_INCLUDE_DIR? and system-
* specifics (unless -I- or -nostdinc option is specified).
* Ignore non-existent directory.
* Note that this routine should be called only in initializing steps,
* because increase of include dirs causes reallocation of incdir[].
* Note: a trailing PATH-DELIM is appended by norm_path().
*/
{
char * norm_name;
const char ** ip;
if (incdir == NULL) { /* Should be initialized */
max_inc = INIT_NUM_INCLUDE;
incdir = (const char **) xmalloc( sizeof (char *) * max_inc);
incend = &incdir[ 0];
} else if (incend - incdir >= max_inc) { /* Buffer full */
incdir = (const char **) xrealloc( (void *) incdir
, sizeof (char *) * max_inc * 2);
incend = &incdir[ max_inc];
max_inc *= 2;
}
if (dirname == NULL)
return; /* Only to initialize incdir[] */
norm_name = norm_dir( dirname, FALSE);
if (! norm_name) /* Non-existent */
return;
for (ip = incdir; ip < incend; ip++) {
if (str_case_eq( *ip, norm_name)) {
free( norm_name); /* Already registered */
return;
}
}
/* Register new directory */
*incend++ = norm_name;
}
static char * norm_dir(
const char * dirname, /* Directory path to normalize */
int framework /* Setting a framework directory*/
)
/*
* Normalize include directory path.
* Handle -isysroot option for GCC, including framework directory for SYS_MAC.
*/
{
char * norm_name;
{
norm_name = norm_path( dirname, NULL, FALSE, FALSE);
/* Normalize the pathname to compare */
}
return norm_name;
}
static char * norm_path(
const char * dir, /* Include directory (maybe "", never NULL) */
const char * fname,
/* Filename (possibly has directory part, or maybe NULL) */
int inf, /* If TRUE, output some infs when (mcpp_debug & PATH) */
int hmap /* "header map" file of Apple-GCC */
)
/*
* Normalize the pathname removing redundant components such as
* "foo/../", "./" and trailing "/.".
* Append trailing "/" if 'fname' is NULL.
* Change relative path to absolute path.
* Dereference a symbolic linked file (or directory) to a real directory/file.
* Return a malloc'ed buffer, if the directory/file exists.
* Return NULL, if the specified directory/file does not exist or 'dir' is
* not a directory or 'fname' is not a regular file.
* This routine is called from set_a_dir(), init_gcc_macro(), do_once() and
* open_file().
*/
{
char * norm_name; /* The path-list converted */
char * start;
char * cp1;
char * cp2;
char * abs_path;
int len; /* Should not be size_t */
size_t start_pos = 0;
char slbuf1[ PATHMAX+1]; /* Working buffer */
#if SYS_FAMILY == SYS_UNIX
char slbuf2[ PATHMAX+1]; /* Working buffer for dereferencing */
#endif
#if SYSTEM == SYS_CYGWIN || SYSTEM == SYS_MINGW
static char * root_dir;
/* System's root directory in Windows file system */
static size_t root_dir_len;
#if SYSTEM == SYS_CYGWIN
static char * cygdrive = "/cygdrive/"; /* Prefix for drive letter */
#else
static char * mingw_dir; /* "/mingw" dir in Windows */
static size_t mingw_dir_len;
#endif
#endif
#if HOST_COMPILER == MSC
struct _stat st_buf;
#else
struct stat st_buf;
#endif
if (! dir || (*dir && is_full_path( fname)))
cfatal( "Bug: Wrong argument to norm_path()" /* _F_ */
, NULL, 0L, NULL);
inf = inf && (mcpp_debug & PATH); /* Output information */
strcpy( slbuf1, dir); /* Include directory */
len = strlen( slbuf1);
if (fname && len && slbuf1[ len - 1] != PATH_DELIM) {
slbuf1[ len] = PATH_DELIM; /* Append PATH_DELIM */
slbuf1[ ++len] = EOS;
} else if (! fname && len && slbuf1[ len - 1] == PATH_DELIM) {
/* stat() of some systems do not like trailing '/' */
slbuf1[ --len] = EOS;
}
if (fname)
strcat( slbuf1, fname);
if (stat( slbuf1, & st_buf) != 0 /* Non-existent */
|| (! fname && ! S_ISDIR( st_buf.st_mode))
/* Not a directory though 'fname' is not specified */
|| (fname && ! S_ISREG( st_buf.st_mode)))
/* Not a regular file though 'fname' is specified */
return NULL;
if (! fname) {
slbuf1[ len] = PATH_DELIM; /* Append PATH_DELIM */
slbuf1[ ++len] = EOS;
}
#if SYS_FAMILY == SYS_UNIX
/* Dereference symbolic linked directory or file, if any */
slbuf1[ len] = EOS; /* Truncate PATH_DELIM and 'fname' part, if any */
slbuf2[ 0] = EOS;