changeset 1736:0cafbd2050dc

Don't need the old ccwrap anymore.
author Rob Landley <rob@landley.net>
date Fri, 20 Feb 2015 12:32:34 -0600
parents 34f7ca02767c
children 1acbe7e78d9d
files sources/toys/ccwrap.old
diffstat 1 files changed, 0 insertions(+), 480 deletions(-) [+]
line wrap: on
line diff
--- a/sources/toys/ccwrap.old	Sun Feb 15 17:39:12 2015 -0600
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,480 +0,0 @@
-/* vi: set ts=4 :*/
-/*
- * Copyright (C) 2000 Manuel Novoa III
- * Copyright (C) 2002-2003 Erik Andersen
- * Copyright (C) 2006-2010 Rob Landley <rob@landley.net>
- *
- * Wrapper to use make a C compiler relocatable.
- *
- * Licensed under GPLv2.
- */
-
-// No, we don't need to check the return value from asprintf().
-
-#undef _FORTIFY_SOURCE
-
-#define _GNU_SOURCE
-#include <alloca.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <strings.h>
-#include <unistd.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-
-static char *topdir, *devprefix;
-static char nostdinc[] = "-nostdinc";
-static char nostdlib[] = "-nostdlib";
-
-// For C++
-static char nostdinc_plus[] = "-nostdinc++";
-
-// Confirm that a regular file exists, and (optionally) has the executable bit.
-int is_file(char *filename, int has_exe)
-{
-	// Confirm it has the executable bit set, if necessary.
-	if (!has_exe || !access(filename, X_OK)) {
-		struct stat st;
-
-		// Confirm it exists and is not a directory.
-		if (!stat(filename, &st) && S_ISREG(st.st_mode)) return 1;
-	}
-	return 0;
-}
-
-// Find an executable in a colon-separated path
-
-char *find_in_path(char *path, char *filename, int has_exe)
-{
-	char *cwd = getcwd(NULL, 0);
-
-	if (index(filename, '/') && is_file(filename, has_exe))
-		return realpath(filename, NULL);
-
-	while (path) {
-		char *str, *next = path ? index(path, ':') : NULL;
-		int len = next ? next-path : strlen(path);
-
-		// The +3 is a corner case: if strlen(filename) is 1, make sure we
-		// have enough space to append ".." to make topdir.
-		str = malloc(strlen(filename) + (len ? len : strlen(cwd)) + 3);
-		if (!len) sprintf(str, "%s/%s", cwd, filename);
-		else {
-			char *str2 = str;
-
-			strncpy(str, path, len);
-			str2 = str+len;
-			*(str2++) = '/';
-			strcpy(str2, filename);
-		}
-
-		// If it's not a directory, return it.
-		if (is_file(str, has_exe)) {
-			char *s = realpath(str, NULL);
-			free(str);
-			free(cwd);
-			return s;
-		} else free(str);
-
-		if (next) next++;
-		path = next;
-	}
-	free(cwd);
-
-	return NULL;
-}
-
-// Some compiler versions don't provide separate T and S versions of begin/end,
-// so fall back to the base version if they're not there.
-
-char *find_TSpath(char *base, int use_shared, int use_static_linking)
-{
-	int i;
-	char *temp;
-
-	asprintf(&temp, base, devprefix,
-			use_shared ? "S.o" : use_static_linking ? "T.o" : ".o");
-
-	if (!is_file(temp, 0)) {
-		free(temp);
-		asprintf(&temp, base, devprefix, ".o");
-	}
-
-	return temp;
-}
-
-int main(int argc, char **argv)
-{
-	int linking = 1, use_static_linking = 0, use_shared_libgcc, used_x = 0;
-	int use_stdinc = 1, use_start = 1, use_stdlib = 1, use_shared = 0;
-	int source_count = 0, verbose = 0;
-	int i, argcnt, lplen;
-	char **cc_argv, **libpath;
-	char *dlstr;
-	char *cc, *toolprefix;
-	char *debug_wrapper=getenv("CCWRAP_DEBUG");
-
-	// For C++
-
-	char *cpp = NULL;
-	int prefixlen, ctor_dtor = 1, use_nostdinc_plus = 0;
-
-	// For profiling
-	int profile = 0;
-
-	if(debug_wrapper) {
-		fprintf(stderr,"incoming: ");
-		for(cc_argv=argv;*cc_argv;cc_argv++)
-			fprintf(stderr,"%s ",*cc_argv);
-		fprintf(stderr,"\n\n");
-	}
-
-	// Allocate space for new command line
-	cc_argv = alloca(sizeof(char*) * (argc + 128));
-
-	// What directory is the wrapper script in?
-	if(!(topdir = find_in_path(getenv("PATH"), argv[0], 1))) {
-		fprintf(stderr, "can't find %s in $PATH (did you export it?)\n", argv[0]);
-		exit(1);
-	} else {
-		char *path = getenv("PATH"), *temp;
-
-		if (!path) path = "";
-
-		// Add that directory to the start of $PATH.  (Better safe than sorry.)
-		*rindex(topdir,'/') = 0;
-		asprintf(&temp,"PATH=%s:%s/../tools/bin:%s",topdir,topdir,path);
-		putenv(temp);
-
-		// The directory above the wrapper script should have include, cc,
-		// and lib directories.  However, the script could have a symlink
-		// pointing to its directory (ala /bin -> /usr/bin), so append ".."
-		// instead of trucating the path.
-		strcat(topdir,"/..");
-	}
-
-	// What's the name of the C compiler we're wrapping?  (It may have a
-	// cross-prefix.)
-	cc = getenv("CCWRAP_CC");
-	if (!cc) cc = "rawcc";
-
-	// Check end of name, since there could be a cross-prefix on the thing
-	toolprefix = strrchr(argv[0], '/');
-	if (!toolprefix) toolprefix = argv[0];
-	else toolprefix++;
-
-	prefixlen = strlen(toolprefix);
-	if (prefixlen>=3 && !strcmp(toolprefix+prefixlen-3, "gcc")) prefixlen -= 3;
-	else if (!strcmp(toolprefix+prefixlen-2, "cc")) prefixlen -= 2;
-	else if (!strcmp(toolprefix+prefixlen-2, "ld")) {
-		prefixlen -= 2;
-
-		// TODO: put support for wrapping the linker here.
-	} else if (!strcmp(toolprefix+prefixlen-3, "cpp")) {
-		prefixlen -=3;
-		linking = 0;
-
-	// Wrapping the c++ compiler?
-	} else if (!strcmp(toolprefix+prefixlen-2, "++")) {
-		int len = strlen(cc);
-		cpp = alloca(len+1);
-		strcpy(cpp, cc);
-		cpp[len-1]='+';
-		cpp[len-2]='+';
-		use_nostdinc_plus = 1;
-	}
-
-	devprefix = getenv("CCWRAP_TOPDIR");
-	if (!devprefix) {
-		char *temp, *temp2;
-		asprintf(&temp, "%.*sCCWRAP_TOPDIR", prefixlen, toolprefix);
-		temp2 = temp;
-		while (*temp2) {
-			if (*temp2 == '-') *temp2='_';
-			temp2++;
-		}
-		devprefix = getenv(temp);
-	}
-	if (!devprefix) devprefix = topdir;
-
-	// Do we have libgcc_s.so?
-
-	asprintf(&dlstr, "%s/lib/libgcc_s.so", devprefix);
-	use_shared_libgcc = is_file(dlstr, 0);
-	free(dlstr);
-
-	// Figure out where the dynamic linker is.
-	dlstr = getenv("CCWRAP_DYNAMIC_LINKER");
-	if (!dlstr) dlstr = "/lib/ld-uClibc.so.0";
-	asprintf(&dlstr, "-Wl,--dynamic-linker,%s", dlstr);
-
-	lplen = 0;
-	libpath = alloca(sizeof(char*) * (argc));
-	libpath[lplen] = 0;
-
-	// Parse the incoming compiler arguments.
-
-	for (i=1; i<argc; i++) {
-		if (argv[i][0] == '-' && argv[i][1]) { /* option */
-			switch (argv[i][1]) {
-				case 'M':	    /* generate dependencies */
-				{
-					char *p = argv[i];
-
-					// -M and -MM imply -E and thus no linking
-					// Other -MX options _don't_, including -MMD.
-					if (p[2] && (p[2]!='M' || p[3])) break;
-				}
-				// fall through
-
-				case 'c':		/* compile or assemble */
-				case 'S':		/* generate assembler code */
-				case 'E':		/* preprocess only */
-					linking = 0;
-					break;
-
-				case 'L': 		/* library path */
-					libpath[lplen++] = argv[i];
-					libpath[lplen] = 0;
-					if (!argv[i][2]) {
-						argv[i] = 0;
-						libpath[lplen++] = argv[++i];
-						libpath[lplen] = 0;
-					}
-					argv[i] = 0;
-					break;
-
-				case 'v':		/* verbose */
-					if (argv[i][2] == 0) verbose = 1;
-					printf("Invoked as %s\n", argv[0]);
-					printf("Reference path: %s\n", topdir);
-					break;
-
-				case 'n':
-					if (!strcmp(nostdinc,argv[i])) use_stdinc = 0;
-					else if (!strcmp("-nostartfiles",argv[i])) {
-						ctor_dtor = 0;
-						use_start = 0;
-					} else if (!strcmp("-nodefaultlibs",argv[i])) {
-						use_stdlib = 0;
-						argv[i] = 0;
-					} else if (!strcmp(nostdlib,argv[i])) {
-						ctor_dtor = 0;
-						use_start = 0;
-						use_stdlib = 0;
-					} else if (!strcmp(nostdinc_plus,argv[i]))
-						use_nostdinc_plus = 0;
-					break;
-
-				case 's':
-					if (!strcmp(argv[i],"-static")) {
-						use_static_linking = 1;
-						use_shared_libgcc=0;
-					}
-					if (!strcmp(argv[i],"-static-libgcc"))
-						use_shared_libgcc = 0;
-					if (!strcmp(argv[i],"-shared-libgcc"))
-						use_shared_libgcc = 1;
-					if (!strcmp("-shared",argv[i])) {
-						use_start = 0;
-						use_shared = 1;
-					}
-					break;
-
-				case 'W':		/* -static could be passed directly to ld */
-					if (!strncmp("-Wl,",argv[i],4)) {
-						char *temp = strstr(argv[i], ",-static");
-						if (temp && (!temp[7] || temp[7]==',')) {
-							use_static_linking = 1;
-							use_shared_libgcc=0;
-						}
-						if (strstr(argv[i],"--dynamic-linker")) dlstr = 0;
-					}
-					break;
-
-				case 'p':
-					if (!strncmp("-print-",argv[i],7)) {
-						char *temp, *temp2;
-						int itemp, showall = 0;
-
-						temp = argv[i]+7;
-						if (!strncmp(temp, "prog-name=", 10)) {
-							printf("%.*s%s\n", prefixlen, toolprefix, temp+10);
-							exit(0);
-						} else if (!strcmp(temp, "search-dirs")) {
-							printf("install: %s/\n",devprefix);
-							printf("programs: %s\n",getenv("PATH"));
-							printf("libraries: ");
-							temp2 = "";
-							showall = 1;
-						} else if (!strncmp(temp, "file-name=", 10))
-							temp2 = temp+10;
-						else if (!strcmp(temp, "libgcc-file-name"))
-							temp2="libgcc.a";
-						else break;
-
-						// Find this entry in the library path.
-						for(itemp=0;;itemp++) {
-							if (itemp == lplen)
-								asprintf(&temp, "%s/cc/lib/%s", devprefix,
-									temp2);
-							else if (itemp == lplen+1)
-								asprintf(&temp, "%s/lib/%s", devprefix, temp2);
-
-							// This is so "include" finds the cc internal
-							// include dir.  The uClibc build needs this.
-							else if (itemp == lplen+2)
-								asprintf(&temp, "%s/cc/%s", devprefix, temp2);
-							else if (itemp == lplen+3) {
-								temp = temp2;
-								break;
-							} else asprintf(&temp, "%s/%s", libpath[itemp],
-											temp2);
-
-							if (debug_wrapper)
-								fprintf(stderr, "try=%s\n", temp);
-
-							if (showall) printf(":%s"+(itemp?0:1), temp);
-							else if (!access(temp, F_OK)) break;
-						}
-
-
-
-						printf("%s\n"+(showall ? 2 : 0), temp);
-						exit(0);
-
-					// Profiling.
-					} else if (!strcmp("-pg",argv[i])) profile = 1;
-					break;
-
-				case 'f':
-					// profiling
-					if (strcmp("-fprofile-arcs",argv[i]) == 0) profile = 1;
-					break;
-
-				case 'x':
-					used_x++;
-					break;
-
-				// --longopts
-
-				case '-':
-					if (!strncmp(argv[i],"--print-",8)
-						|| !strncmp(argv[i],"--static",8)
-						|| !strncmp(argv[i],"--shared",8))
-					{
-						argv[i]++;
-						i--;
-						continue;
-					} else if (!strcmp("--no-ctors", argv[i])) {
-						ctor_dtor = 0;
-						argv[i] = 0;
-					}
-					break;
-			}
-		// assume it is an existing source file
-		} else ++source_count;
-	}
-
-	argcnt = 0;
-
-	cc_argv[argcnt++] = cpp ? cpp : cc;
-
-	if (cpp) cc_argv[argcnt++] = "-fno-use-cxa-atexit";
-
-	if (linking && source_count) {
-//#if defined HAS_ELF && ! defined HAS_MMU
-//		cc_argv[argcnt++] = "-Wl,-elf2flt";
-//#endif
-		cc_argv[argcnt++] = nostdlib;
-		if (use_static_linking) cc_argv[argcnt++] = "-static";
-		else if (dlstr) cc_argv[argcnt++] = dlstr;
-		for (i=0; i<lplen; i++)
-			if (libpath[i]) cc_argv[argcnt++] = libpath[i];
-
-		// just to be safe:
-		asprintf(cc_argv+(argcnt++), "-Wl,-rpath-link,%s/lib", devprefix);
-
-		asprintf(cc_argv+(argcnt++), "-L%s/lib", devprefix);
-		asprintf(cc_argv+(argcnt++), "-L%s/cc/lib", devprefix);
-	}
-	if (use_stdinc && source_count) {
-		cc_argv[argcnt++] = nostdinc;
-
-		if (cpp) {
-			if (use_nostdinc_plus) cc_argv[argcnt++] = "-nostdinc++";
-			cc_argv[argcnt++] = "-isystem";
-			asprintf(cc_argv+(argcnt++), "%s/c++/include", devprefix);
-		}
-
-		cc_argv[argcnt++] = "-isystem";
-		asprintf(cc_argv+(argcnt++), "%s/include", devprefix);
-		cc_argv[argcnt++] = "-isystem";
-		asprintf(cc_argv+(argcnt++), "%s/cc/include", devprefix);
-	}
-
-	cc_argv[argcnt++] = "-U__nptl__";
-
-	if (linking && source_count) {
-
-		if (profile)
-			asprintf(cc_argv+(argcnt++), "%s/lib/gcrt1.o", devprefix);
-
-		if (ctor_dtor) {
-			asprintf(cc_argv+(argcnt++), "%s/lib/crti.o", devprefix);
-			cc_argv[argcnt++]=find_TSpath("%s/cc/lib/crtbegin%s",
-				use_shared, use_static_linking);
-		}
-		if (use_start && !profile)
-			asprintf(cc_argv+(argcnt++), "%s/lib/%scrt1.o", devprefix, use_shared ? "S" : "");
-
-		// Add remaining unclaimed arguments.
-
-		for (i=1; i<argc; i++) if (argv[i]) cc_argv[argcnt++] = argv[i];
-
-		if (used_x) cc_argv[argcnt++] = "-xnone";
-
-		// Add standard libraries
-
-		if (use_stdlib) {
-			if (cpp) {
-				cc_argv[argcnt++] = "-lstdc++";
-				cc_argv[argcnt++] = "-lm";
-			}
-
-			// libgcc can call libc which can call libgcc
-
-			cc_argv[argcnt++] = "-Wl,--start-group,--as-needed";
-			cc_argv[argcnt++] = "-lgcc";
-			if (!use_static_linking && use_shared_libgcc)
-				cc_argv[argcnt++] = "-lgcc_s";
-			else cc_argv[argcnt++] = "-lgcc_eh";
-			cc_argv[argcnt++] = "-lc";
-			cc_argv[argcnt++] = "-Wl,--no-as-needed,--end-group";
-		}
-		if (ctor_dtor) {
-			cc_argv[argcnt++] = find_TSpath("%s/cc/lib/crtend%s", use_shared, 0);
-			asprintf(cc_argv+(argcnt++), "%s/lib/crtn.o", devprefix);
-		}
-	} else for (i=1; i<argc; i++) if (argv[i]) cc_argv[argcnt++] = argv[i];
-
-	cc_argv[argcnt++] = NULL;
-
-	if (verbose) {
-		for (i=0; cc_argv[i]; i++) printf("arg[%2i] = %s\n", i, cc_argv[i]);
-		fflush(stdout);
-	}
-
-	if (debug_wrapper) {
-		fprintf(stderr, "outgoing: ");
-		for (i=0; cc_argv[i]; i++) fprintf(stderr, "%s ",cc_argv[i]);
-		fprintf(stderr, "\n\n");
-	}
-
-	execvp(cc_argv[0], cc_argv);
-	fprintf(stderr, "%s: %s\n", cpp ? cpp : cc, strerror(errno));
-	exit(EXIT_FAILURE);
-}