Merge remote-tracking branch 'upstream/master'

1 files changed, 632 insertions, 0 deletions

diff --git a/jam-files/engine/jam.c b/jam-files/engine/jam.c
new file mode 100644
index 00000000..e11d082b
--- /dev/null
+++ b/jam-files/engine/jam.c
@@ -0,0 +1,632 @@
+/*
+ * /+\
+ * +\   Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
+ * \+/
+ *
+ * This file is part of jam.
+ *
+ * License is hereby granted to use this software and distribute it
+ * freely, as long as this copyright notice is retained and modifications
+ * are clearly marked.
+ *
+ * ALL WARRANTIES ARE HEREBY DISCLAIMED.
+ */
+
+/*  This file is ALSO:
+ *  Copyright 2001-2004 David Abrahams.
+ *  Distributed under the Boost Software License, Version 1.0.
+ *  (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+/*
+ * jam.c - make redux
+ *
+ * See Jam.html for usage information.
+ *
+ * These comments document the code.
+ *
+ * The top half of the code is structured such:
+ *
+ *                       jam
+ *                      / | \
+ *                 +---+  |  \
+ *                /       |   \
+ *         jamgram     option  \
+ *        /  |   \              \
+ *       /   |    \              \
+ *      /    |     \             |
+ *  scan     |     compile      make
+ *   |       |    /  | \       / |  \
+ *   |       |   /   |  \     /  |   \
+ *   |       |  /    |   \   /   |    \
+ * jambase parse     |   rules  search make1
+ *                   |           |      |   \
+ *                   |           |      |    \
+ *                   |           |      |     \
+ *               builtins    timestamp command execute
+ *                               |
+ *                               |
+ *                               |
+ *                             filesys
+ *
+ *
+ * The support routines are called by all of the above, but themselves
+ * are layered thus:
+ *
+ *                     variable|expand
+ *                      /  |   |   |
+ *                     /   |   |   |
+ *                    /    |   |   |
+ *                 lists   |   |   pathsys
+ *                    \    |   |
+ *                     \   |   |
+ *                      \  |   |
+ *                     newstr  |
+ *                        \    |
+ *                         \   |
+ *                          \  |
+ *                          hash
+ *
+ * Roughly, the modules are:
+ *
+ *  builtins.c - jam's built-in rules
+ *  command.c - maintain lists of commands
+ *  compile.c - compile parsed jam statements
+ *  execunix.c - execute a shell script on UNIX
+ *  execvms.c - execute a shell script, ala VMS
+ *  expand.c - expand a buffer, given variable values
+ *  file*.c - scan directories and archives on *
+ *  hash.c - simple in-memory hashing routines
+ *  hdrmacro.c - handle header file parsing for filename macro definitions
+ *  headers.c - handle #includes in source files
+ *  jambase.c - compilable copy of Jambase
+ *  jamgram.y - jam grammar
+ *  lists.c - maintain lists of strings
+ *  make.c - bring a target up to date, once rules are in place
+ *  make1.c - execute command to bring targets up to date
+ *  newstr.c - string manipulation routines
+ *  option.c - command line option processing
+ *  parse.c - make and destroy parse trees as driven by the parser
+ *  path*.c - manipulate file names on *
+ *  hash.c - simple in-memory hashing routines
+ *  regexp.c - Henry Spencer's regexp
+ *  rules.c - access to RULEs, TARGETs, and ACTIONs
+ *  scan.c - the jam yacc scanner
+ *  search.c - find a target along $(SEARCH) or $(LOCATE)
+ *  timestamp.c - get the timestamp of a file or archive member
+ *  variable.c - handle jam multi-element variables
+ *
+ * 05/04/94 (seiwald) - async multiprocess (-j) support
+ * 02/08/95 (seiwald) - -n implies -d2.
+ * 02/22/95 (seiwald) - -v for version info.
+ * 09/11/00 (seiwald) - PATCHLEVEL folded into VERSION.
+ * 01/10/01 (seiwald) - pathsys.h split from filesys.h
+ */
+
+
+#include "jam.h"
+#include "option.h"
+#include "patchlevel.h"
+
+/* These get various function declarations. */
+#include "lists.h"
+#include "parse.h"
+#include "variable.h"
+#include "compile.h"
+#include "builtins.h"
+#include "rules.h"
+#include "newstr.h"
+#include "scan.h"
+#include "timestamp.h"
+#include "make.h"
+#include "strings.h"
+#include "expand.h"
+#include "filesys.h"
+#include "output.h"
+
+/* Macintosh is "special" */
+#ifdef OS_MAC
+    #include <QuickDraw.h>
+#endif
+
+/* And UNIX for this. */
+#ifdef unix
+    #include <sys/utsname.h>
+    #include <signal.h>
+#endif
+
+struct globs globs =
+{
+    0,          /* noexec */
+    1,          /* jobs */
+    0,          /* quitquick */
+    0,          /* newestfirst */
+    0,          /* pipes action stdout and stderr merged to action output */
+#ifdef OS_MAC
+    { 0, 0 },   /* debug - suppress tracing output */
+#else
+    { 0, 1 },   /* debug ... */
+#endif
+    0,          /* output commands, not run them */
+    0           /* action timeout */
+};
+
+/* Symbols to be defined as true for use in Jambase. */
+static char * othersyms[] = { OSMAJOR, OSMINOR, OSPLAT, JAMVERSYM, 0 };
+
+
+/* Known for sure:
+ *  mac needs arg_enviro
+ *  OS2 needs extern environ
+ */
+
+#ifdef OS_MAC
+    #define use_environ arg_environ
+    #ifdef MPW
+        QDGlobals qd;
+    #endif
+#endif
+
+/* on Win32-LCC */
+#if defined( OS_NT ) && defined( __LCC__ )
+    #define use_environ _environ
+#endif
+
+# if defined( __MWERKS__)
+    #define use_environ _environ
+    extern char * * _environ;
+#endif
+
+#ifndef use_environ
+    #define use_environ environ
+    #if !defined( __WATCOM__ ) && !defined( OS_OS2 ) && !defined( OS_NT )
+        extern char **environ;
+    #endif
+#endif
+
+#if YYDEBUG != 0
+    extern int yydebug;
+#endif
+
+#ifndef NDEBUG
+static void run_unit_tests()
+{
+#if defined( USE_EXECNT )
+    extern void execnt_unit_test();
+    execnt_unit_test();
+#endif
+    string_unit_test();
+    var_expand_unit_test();
+}
+#endif
+
+int anyhow = 0;
+
+#ifdef HAVE_PYTHON
+    extern PyObject * bjam_call         ( PyObject * self, PyObject * args );
+    extern PyObject * bjam_import_rule  ( PyObject * self, PyObject * args );
+    extern PyObject * bjam_define_action( PyObject * self, PyObject * args );
+    extern PyObject * bjam_variable     ( PyObject * self, PyObject * args );
+    extern PyObject * bjam_backtrace    ( PyObject * self, PyObject * args );
+    extern PyObject * bjam_caller       ( PyObject * self, PyObject * args );
+#endif
+
+char *saved_argv0;
+
+int main( int argc, char * * argv, char * * arg_environ )
+{
+    int                     n;
+    char                  * s;
+    struct bjam_option      optv[N_OPTS];
+    char            const * all = "all";
+    int                     status;
+    int                     arg_c = argc;
+    char          *       * arg_v = argv;
+    char            const * progname = argv[0];
+
+    saved_argv0 = argv[0];
+
+    BJAM_MEM_INIT();
+
+# ifdef OS_MAC
+    InitGraf(&qd.thePort);
+# endif
+
+    --argc;
+    ++argv;
+
+    if ( getoptions( argc, argv, "-:l:d:j:p:f:gs:t:ano:qv", optv ) < 0 )
+    {
+        printf( "\nusage: %s [ options ] targets...\n\n", progname );
+
+        printf( "-a      Build all targets, even if they are current.\n" );
+        printf( "-dx     Set the debug level to x (0-9).\n" );
+        printf( "-fx     Read x instead of Jambase.\n" );
+        /* printf( "-g      Build from newest sources first.\n" ); */
+        printf( "-jx     Run up to x shell commands concurrently.\n" );
+        printf( "-lx     Limit actions to x number of seconds after which they are stopped.\n" );
+        printf( "-n      Don't actually execute the updating actions.\n" );
+        printf( "-ox     Write the updating actions to file x.\n" );
+        printf( "-px     x=0, pipes action stdout and stderr merged into action output.\n" );
+        printf( "-q      Quit quickly as soon as a target fails.\n" );
+        printf( "-sx=y   Set variable x=y, overriding environment.\n" );
+        printf( "-tx     Rebuild x, even if it is up-to-date.\n" );
+        printf( "-v      Print the version of jam and exit.\n" );
+        printf( "--x     Option is ignored.\n\n" );
+
+        exit( EXITBAD );
+    }
+
+    /* Version info. */
+    if ( ( s = getoptval( optv, 'v', 0 ) ) )
+    {
+        printf( "Boost.Jam  " );
+        printf( "Version %s. %s.\n", VERSION, OSMINOR );
+        printf( "   Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.  \n" );
+        printf( "   Copyright 2001 David Turner.\n" );
+        printf( "   Copyright 2001-2004 David Abrahams.\n" );
+        printf( "   Copyright 2002-2008 Rene Rivera.\n" );
+        printf( "   Copyright 2003-2008 Vladimir Prus.\n" );
+
+        return EXITOK;
+    }
+
+    /* Pick up interesting options. */
+    if ( ( s = getoptval( optv, 'n', 0 ) ) )
+        globs.noexec++, globs.debug[2] = 1;
+
+    if ( ( s = getoptval( optv, 'p', 0 ) ) )
+    {
+        /* Undocumented -p3 (acts like both -p1 -p2) means separate pipe action
+         * stdout and stderr.
+         */
+        globs.pipe_action = atoi( s );
+        if ( ( 3 < globs.pipe_action ) || ( globs.pipe_action < 0 ) )
+        {
+            printf(
+                "Invalid pipe descriptor '%d', valid values are -p[0..3].\n",
+                globs.pipe_action );
+            exit( EXITBAD );
+        }
+    }
+
+    if ( ( s = getoptval( optv, 'q', 0 ) ) )
+        globs.quitquick = 1;
+
+    if ( ( s = getoptval( optv, 'a', 0 ) ) )
+        anyhow++;
+
+    if ( ( s = getoptval( optv, 'j', 0 ) ) )
+    {
+        globs.jobs = atoi( s );
+        if (globs.jobs == 0)
+        {
+            printf("Invalid value for the '-j' option.\n");
+            exit(EXITBAD);
+        }
+    }
+
+    if ( ( s = getoptval( optv, 'g', 0 ) ) )
+        globs.newestfirst = 1;
+
+    if ( ( s = getoptval( optv, 'l', 0 ) ) )
+        globs.timeout = atoi( s );
+
+    /* Turn on/off debugging */
+    for ( n = 0; ( s = getoptval( optv, 'd', n ) ); ++n )
+    {
+        int i;
+
+        /* First -d, turn off defaults. */
+        if ( !n )
+            for ( i = 0; i < DEBUG_MAX; ++i )
+                globs.debug[i] = 0;
+
+        i = atoi( s );
+
+        if ( ( i < 0 ) || ( i >= DEBUG_MAX ) )
+        {
+            printf( "Invalid debug level '%s'.\n", s );
+            continue;
+        }
+
+        /* n turns on levels 1-n. */
+        /* +n turns on level n. */
+        if ( *s == '+' )
+            globs.debug[i] = 1;
+        else while ( i )
+            globs.debug[i--] = 1;
+    }
+
+    {
+        PROFILE_ENTER( MAIN );
+
+#ifdef HAVE_PYTHON
+        {
+            PROFILE_ENTER( MAIN_PYTHON );
+            Py_Initialize();
+            {
+                static PyMethodDef BjamMethods[] = {
+                    {"call", bjam_call, METH_VARARGS,
+                     "Call the specified bjam rule."},
+                    {"import_rule", bjam_import_rule, METH_VARARGS,
+                     "Imports Python callable to bjam."},
+                    {"define_action", bjam_define_action, METH_VARARGS,
+                     "Defines a command line action."},
+                    {"variable", bjam_variable, METH_VARARGS,
+                     "Obtains a variable from bjam's global module."},
+                    {"backtrace", bjam_backtrace, METH_VARARGS,
+                     "Returns bjam backtrace from the last call into Python."},
+                    {"caller", bjam_caller, METH_VARARGS,
+                     "Returns the module from which the last call into Python is made."},
+                    {NULL, NULL, 0, NULL}
+                };
+
+                Py_InitModule( "bjam", BjamMethods );
+            }
+            PROFILE_EXIT( MAIN_PYTHON );
+        }
+#endif
+
+#ifndef NDEBUG
+        run_unit_tests();
+#endif
+#if YYDEBUG != 0
+        if ( DEBUG_PARSE )
+            yydebug = 1;
+#endif
+
+        /* Set JAMDATE. */
+        var_set( "JAMDATE", list_new( L0, outf_time(time(0)) ), VAR_SET );
+
+        /* Set JAM_VERSION. */
+        var_set( "JAM_VERSION",
+                 list_new( list_new( list_new( L0,
+                   newstr( VERSION_MAJOR_SYM ) ),
+                   newstr( VERSION_MINOR_SYM ) ),
+                   newstr( VERSION_PATCH_SYM ) ),
+                   VAR_SET );
+
+        /* Set JAMUNAME. */
+#ifdef unix
+        {
+            struct utsname u;
+
+            if ( uname( &u ) >= 0 )
+            {
+                var_set( "JAMUNAME",
+                         list_new(
+                             list_new(
+                                 list_new(
+                                     list_new(
+                                         list_new( L0,
+                                            newstr( u.sysname ) ),
+                                         newstr( u.nodename ) ),
+                                     newstr( u.release ) ),
+                                 newstr( u.version ) ),
+                             newstr( u.machine ) ), VAR_SET );
+            }
+        }
+#endif /* unix */
+
+        /* Load up environment variables. */
+
+        /* First into the global module, with splitting, for backward
+         * compatibility.
+         */
+        var_defines( use_environ, 1 );
+
+        /* Then into .ENVIRON, without splitting. */
+        enter_module( bindmodule(".ENVIRON") );
+        var_defines( use_environ, 0 );
+        exit_module( bindmodule(".ENVIRON") );
+
+        /*
+         * Jam defined variables OS & OSPLAT. We load them after environment, so
+         * that setting OS in environment does not change Jam's notion of the
+         * current platform.
+         */
+        var_defines( othersyms, 1 );
+
+        /* Load up variables set on command line. */
+        for ( n = 0; ( s = getoptval( optv, 's', n ) ); ++n )
+        {
+            char *symv[2];
+            symv[ 0 ] = s;
+            symv[ 1 ] = 0;
+            var_defines( symv, 1 );
+            enter_module( bindmodule(".ENVIRON") );
+            var_defines( symv, 0 );
+            exit_module( bindmodule(".ENVIRON") );
+        }
+
+        /* Set the ARGV to reflect the complete list of arguments of invocation.
+         */
+        for ( n = 0; n < arg_c; ++n )
+            var_set( "ARGV", list_new( L0, newstr( arg_v[n] ) ), VAR_APPEND );
+
+        /* Initialize built-in rules. */
+        load_builtins();
+
+        /* Add the targets in the command line to the update list. */
+        for ( n = 1; n < arg_c; ++n )
+        {
+            if ( arg_v[ n ][ 0 ] == '-' )
+            {
+                char * f = "-:l:d:j:f:gs:t:ano:qv";
+                for ( ; *f; ++f ) if ( *f == arg_v[ n ][ 1 ] ) break;
+                if ( ( f[ 1 ] == ':' ) && ( arg_v[ n ][ 2 ] == '\0' ) ) ++n;
+            }
+            else
+            {
+                mark_target_for_updating( arg_v[ n ] );
+            }
+        }
+
+        if (!targets_to_update())
+            mark_target_for_updating("all");
+
+        /* Parse ruleset. */
+        {
+            FRAME frame[ 1 ];
+            frame_init( frame );
+            for ( n = 0; ( s = getoptval( optv, 'f', n ) ); ++n )
+                parse_file( s, frame );
+
+            if ( !n )
+                parse_file( "+", frame );
+        }
+
+        status = yyanyerrors();
+
+        /* Manually touch -t targets. */
+        for ( n = 0; ( s = getoptval( optv, 't', n ) ); ++n )
+            touch_target( s );
+
+        /* If an output file is specified, set globs.cmdout to that. */
+        if ( ( s = getoptval( optv, 'o', 0 ) ) )
+        {
+            if ( !( globs.cmdout = fopen( s, "w" ) ) )
+            {
+                printf( "Failed to write to '%s'\n", s );
+                exit( EXITBAD );
+            }
+            ++globs.noexec;
+        }
+
+        /* The build system may set the PARALLELISM variable to override -j
+           options.  */
+        {
+            LIST *p = L0;
+            p = var_get ("PARALLELISM");
+            if (p)
+            {
+                int j = atoi (p->string);
+                if (j == -1)
+                {
+                    printf( "Invalid value of PARALLELISM: %s\n", p->string);
+                }
+                else
+                {
+                    globs.jobs = j;
+                }
+            }
+        }
+
+        /* KEEP_GOING overrides -q option. */
+        {
+            LIST *p = L0;
+            p = var_get ("KEEP_GOING");
+            if (p)
+            {
+                int v = atoi (p->string);
+                if (v == 0)
+                    globs.quitquick = 1;
+                else
+                    globs.quitquick = 0;
+            }
+        }
+
+        /* Now make target. */
+        {
+            PROFILE_ENTER( MAIN_MAKE );
+
+            LIST * targets = targets_to_update();
+            if (targets)
+            {
+                int targets_count = list_length( targets );
+                const char * * targets2 = (const char * *)
+                    BJAM_MALLOC( targets_count * sizeof( char * ) );
+                int n = 0;
+                for ( ; targets; targets = list_next( targets ) )
+                    targets2[ n++ ] = targets->string;
+                status |= make( targets_count, targets2, anyhow );
+                free( targets );
+            }
+            else
+            {
+                status = last_update_now_status;
+            }
+
+            PROFILE_EXIT( MAIN_MAKE );
+        }
+
+        PROFILE_EXIT( MAIN );
+    }
+
+    if ( DEBUG_PROFILE )
+        profile_dump();
+
+    /* Widely scattered cleanup. */
+    var_done();
+    file_done();
+    rules_done();
+    stamps_done();
+    str_done();
+
+    /* Close cmdout. */
+    if ( globs.cmdout )
+        fclose( globs.cmdout );
+
+#ifdef HAVE_PYTHON
+    Py_Finalize();
+#endif
+
+    BJAM_MEM_CLOSE();
+
+    return status ? EXITBAD : EXITOK;
+}
+
+#if defined(_WIN32)
+#include <windows.h>
+char *executable_path(char *argv0) {
+    char buf[1024];
+    DWORD ret = GetModuleFileName(NULL, buf, sizeof(buf));
+    if (ret == 0 || ret == sizeof(buf)) return NULL;
+    return strdup (buf);
+}
+#elif defined(__APPLE__)  /* Not tested */
+#include <mach-o/dyld.h>
+char *executable_path(char *argv0) {
+    char buf[1024];
+    uint32_t size = sizeof(buf);
+    int ret = _NSGetExecutablePath(buf, &size);
+    if (ret != 0) return NULL;
+    return strdup(buf);
+}
+#elif defined(sun) || defined(__sun) /* Not tested */
+#include <stdlib.h>
+
+char *executable_path(char *argv0) {
+    return strdup(getexecname());
+}
+#elif defined(__FreeBSD__)
+#include <sys/sysctl.h>
+char *executable_path(char *argv0) {
+    int mib[4];
+    mib[0] = CTL_KERN;
+    mib[1] = KERN_PROC;
+    mib[2] = KERN_PROC_PATHNAME;
+    mib[3] = -1;
+    char buf[1024];
+    size_t size = sizeof(buf);
+    sysctl(mib, 4, buf, &size, NULL, 0);
+    if (size == 0 || size == sizeof(buf)) return NULL;
+    return strndup(buf, size);
+}
+#elif defined(__linux__)
+#include <unistd.h>
+char *executable_path(char *argv0) {
+    char buf[1024];
+    ssize_t ret = readlink("/proc/self/exe", buf, sizeof(buf));
+    if (ret == 0 || ret == sizeof(buf)) return NULL;
+    return strndup(buf, ret);
+}
+#else
+char *executable_path(char *argv0) {
+    /* If argv0 is absolute path, assume it's the right absolute path. */
+    if (argv0[0] == "/")
+        return strdup(argv0);
+    return NULL;
+}
+#endif