/*
* ----------------------------------------------------------------------------
* nmakehlp.c --
*
* This is used to fix limitations within nmake and the environment.
*
* Copyright (c) 2002 by David Gravereaux.
* Copyright (c) 2006 by Pat Thoyts
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
* ----------------------------------------------------------------------------
*/
#define _CRT_SECURE_NO_DEPRECATE
#include <windows.h>
#ifdef _MSC_VER
#pragma comment (lib, "user32.lib")
#pragma comment (lib, "kernel32.lib")
#endif
#include <stdio.h>
#include <math.h>
/*
* This library is required for x64 builds with _some_ versions of MSVC
*/
#if defined(_M_IA64) || defined(_M_AMD64)
#if _MSC_VER >= 1400 && _MSC_VER < 1500
#pragma comment(lib, "bufferoverflowU")
#endif
#endif
/* ISO hack for dumb VC++ */
#ifdef _MSC_VER
#define snprintf _snprintf
#endif
/* protos */
static int CheckForCompilerFeature(const char *option);
static int CheckForLinkerFeature(char **options, int count);
static int IsIn(const char *string, const char *substring);
static int SubstituteFile(const char *substs, const char *filename);
static int QualifyPath(const char *path);
static int LocateDependency(const char *keyfile);
static const char *GetVersionFromFile(const char *filename, const char *match, int numdots);
static DWORD WINAPI ReadFromPipe(LPVOID args);
/* globals */
#define CHUNK 25
#define STATICBUFFERSIZE 1000
typedef struct {
HANDLE pipe;
char buffer[STATICBUFFERSIZE];
} pipeinfo;
pipeinfo Out = {INVALID_HANDLE_VALUE, ""};
pipeinfo Err = {INVALID_HANDLE_VALUE, ""};
/*
* exitcodes: 0 == no, 1 == yes, 2 == error
*/
int
main(
int argc,
char *argv[])
{
char msg[300];
DWORD dwWritten;
int chars;
const char *s;
/*
* Make sure children (cl.exe and link.exe) are kept quiet.
*/
SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
/*
* Make sure the compiler and linker aren't effected by the outside world.
*/
SetEnvironmentVariable("CL", "");
SetEnvironmentVariable("LINK", "");
if (argc > 1 && *argv[1] == '-') {
switch (*(argv[1]+1)) {
case 'c':
if (argc != 3) {
chars = snprintf(msg, sizeof(msg) - 1,
"usage: %s -c <compiler option>\n"
"Tests for whether cl.exe supports an option\n"
"exitcodes: 0 == no, 1 == yes, 2 == error\n", argv[0]);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
&dwWritten, NULL);
return 2;
}
return CheckForCompilerFeature(argv[2]);
case 'l':
if (argc < 3) {
chars = snprintf(msg, sizeof(msg) - 1,
"usage: %s -l <linker option> ?<mandatory option> ...?\n"
"Tests for whether link.exe supports an option\n"
"exitcodes: 0 == no, 1 == yes, 2 == error\n", argv[0]);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
&dwWritten, NULL);
return 2;
}
return CheckForLinkerFeature(&argv[2], argc-2);
case 'f':
if (argc == 2) {
chars = snprintf(msg, sizeof(msg) - 1,
"usage: %s -f <string> <substring>\n"
"Find a substring within another\n"
"exitcodes: 0 == no, 1 == yes, 2 == error\n", argv[0]);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
&dwWritten, NULL);
return 2;
} else if (argc == 3) {
/*
* If the string is blank, there is no match.
*/
return 0;
} else {
return IsIn(argv[2], argv[3]);
}
case 's':
if (argc == 2) {
chars = snprintf(msg, sizeof(msg) - 1,
"usage: %s -s <substitutions file> <file>\n"
"Perform a set of string map type substutitions on a file\n"
"exitcodes: 0\n",
argv[0]);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
&dwWritten, NULL);
return 2;
}
return SubstituteFile(argv[2], argv[3]);
case 'V':
if (argc != 4) {
chars = snprintf(msg, sizeof(msg) - 1,
"usage: %s -V filename matchstring\n"
"Extract a version from a file:\n"
"eg: pkgIndex.tcl \"package ifneeded http\"",
argv[0]);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
&dwWritten, NULL);
return 0;
}
s = GetVersionFromFile(argv[2], argv[3], *(argv[1]+2) - '0');
if (s && *s) {
printf("%s\n", s);
return 0;
} else
return 1; /* Version not found. Return non-0 exit code */
case 'Q':
if (argc != 3) {
chars = snprintf(msg, sizeof(msg) - 1,
"usage: %s -Q path\n"
"Emit the fully qualified path\n"
"exitcodes: 0 == no, 1 == yes, 2 == error\n", argv[0]);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
&dwWritten, NULL);
return 2;
}
return QualifyPath(argv[2]);
case 'L':
if (argc != 3) {
chars = snprintf(msg, sizeof(msg) - 1,
"usage: %s -L keypath\n"
"Emit the fully qualified path of directory containing keypath\n"
"exitcodes: 0 == success, 1 == not found, 2 == error\n", argv[0]);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars,
&dwWritten, NULL);
return 2;
}
return LocateDependency(argv[2]);
}
}
chars = snprintf(msg, sizeof(msg) - 1,
"usage: %s -c|-f|-l|-Q|-s|-V ...\n"
"This is a little helper app to equalize shell differences between WinNT and\n"
"Win9x and get nmake.exe to accomplish its job.\n",
argv[0]);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, chars, &dwWritten, NULL);
return 2;
}
static int
CheckForCompilerFeature(
const char *option)
{
STARTUPINFO si;
PROCESS_INFORMATION pi;
SECURITY_ATTRIBUTES sa;
DWORD threadID;
char msg[300];
BOOL ok;
HANDLE hProcess, h, pipeThreads[2];
char cmdline[100];
hProcess = GetCurrentProcess();
ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
ZeroMemory(&si, sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = INVALID_HANDLE_VALUE;
ZeroMemory(&sa, sizeof(SECURITY_ATTRIBUTES));
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = FALSE;
/*
* Create a non-inheritible pipe.
*/
CreatePipe(&Out.pipe, &h, &sa, 0);
/*
* Dupe the write side, make it inheritible, and close the original.
*/
DuplicateHandle(hProcess, h, hProcess, &si.hStdOutput, 0, TRUE,
DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE);
/*
* Same as above, but for the error side.
*/
CreatePipe(&Err.pipe, &h, &sa, 0);
DuplicateHandle(hProcess, h, hProcess, &si.hStdError, 0, TRUE,
DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE);
/*
* Base command line.
*/
lstrcpy(cmdline, "cl.exe -nologo -c -TC -Zs -X -Fp.\\_junk.pch ");
/*
* Append our option for testing
*/
lstrcat(cmdline, option);
/*
* Filename to compile, which exists, but is nothing and empty.
*/
lstrcat(cmdline, " .\\nul");
ok = CreateProcess(
NULL, /* Module name. */
cmdline, /* Command line. */
NULL, /* Process handle not inheritable. */
NULL, /* Thread handle not inheritable. */
TRUE, /* yes, inherit handles. */
DETACHED_PROCESS, /* No console for you. */
NULL, /* Use parent's environment block. */
NULL, /* Use parent's starting directory. */
&si, /* Pointer to STARTUPINFO structure. */
&pi); /* Pointer to PROCESS_INFORMATION structure. */
if (!ok) {
DWORD err = GetLastError();
int chars = snprintf(msg, sizeof(msg) - 1,
"Tried to launch: \"%s\", but got error [%u]: ", cmdline, err);
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS|
FORMAT_MESSAGE_MAX_WIDTH_MASK, 0L, err, 0, (LPSTR)&msg[chars],
(300-chars), 0);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, lstrlen(msg), &err,NULL);
return 2;
}
/*
* Close our references to the write handles that have now been inherited.
*/
CloseHandle(si.hStdOutput);
CloseHandle(si.hStdError);
WaitForInputIdle(pi.hProcess, 5000);
CloseHandle(pi.hThread);
/*
* Start the pipe reader threads.
*/
pipeThreads[0] = CreateThread(NULL, 0, ReadFromPipe, &Out, 0, &threadID);
pipeThreads[1] = CreateThread(NULL, 0, ReadFromPipe, &Err, 0, &threadID);
/*
* Block waiting for the process to end.
*/
WaitForSingleObject(pi.hProcess, INFINITE);
CloseHandle(pi.hProcess);
/*
* Wait for our pipe to get done reading, should it be a little slow.
*/
WaitForMultipleObjects(2, pipeThreads, TRUE, 500);
CloseHandle(pipeThreads[0]);
CloseHandle(pipeThreads[1]);
/*
* Look for the commandline warning code in both streams.
* - in MSVC 6 & 7 we get D4002, in MSVC 8 we get D9002.
*/
return !(strstr(Out.buffer, "D4002") != NULL
|| strstr(Err.buffer, "D4002") != NULL
|| strstr(Out.buffer, "D9002") != NULL
|| strstr(Err.buffer, "D9002") != NULL
|| strstr(Out.buffer, "D2021") != NULL
|| strstr(Err.buffer, "D2021") != NULL);
}
static int
CheckForLinkerFeature(
char **options,
int count)
{
STARTUPINFO si;
PROCESS_INFORMATION pi;
SECURITY_ATTRIBUTES sa;
DWORD threadID;
char msg[300];
BOOL ok;
HANDLE hProcess, h, pipeThreads[2];
int i;
char cmdline[255];
hProcess = GetCurrentProcess();
ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
ZeroMemory(&si, sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = INVALID_HANDLE_VALUE;
ZeroMemory(&sa, sizeof(SECURITY_ATTRIBUTES));
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE;
/*
* Create a non-inheritible pipe.
*/
CreatePipe(&Out.pipe, &h, &sa, 0);
/*
* Dupe the write side, make it inheritible, and close the original.
*/
DuplicateHandle(hProcess, h, hProcess, &si.hStdOutput, 0, TRUE,
DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE);
/*
* Same as above, but for the error side.
*/
CreatePipe(&Err.pipe, &h, &sa, 0);
DuplicateHandle(hProcess, h, hProcess, &si.hStdError, 0, TRUE,
DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE);
/*
* Base command line.
*/
lstrcpy(cmdline, "link.exe -nologo ");
/*
* Append our option for testing.
*/
for (i = 0; i < count; i++) {
lstrcat(cmdline, " \"");
lstrcat(cmdline, options[i]);
lstrcat(cmdline, "\"");
}
ok = CreateProcess(
NULL, /* Module name. */
cmdline, /* Command line. */
NULL, /* Process handle not inheritable. */
NULL, /* Thread handle not inheritable. */
TRUE, /* yes, inherit handles. */
DETACHED_PROCESS, /* No console for you. */
NULL, /* Use parent's environment block. */
NULL, /* Use parent's starting directory. */
&si, /* Pointer to STARTUPINFO structure. */
&pi); /* Pointer to PROCESS_INFORMATION structure. */
if (!ok) {
DWORD err = GetLastError();
int chars = snprintf(msg, sizeof(msg) - 1,
"Tried to launch: \"%s\", but got error [%u]: ", cmdline, err);
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS|
FORMAT_MESSAGE_MAX_WIDTH_MASK, 0L, err, 0, (LPSTR)&msg[chars],
(300-chars), 0);
WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg, lstrlen(msg), &err,NULL);
return 2;
}
/*
* Close our references to the write handles that have now been inherited.
*/
CloseHandle(si.hStdOutput);
CloseHandle(si.hStdError);
WaitForInputIdle(pi.hProcess, 5000);
CloseHandle(pi.hThread);
/*
* Start the pipe reader threads.
*/
pipeThreads[0] = CreateThread(NULL, 0, ReadFromPipe, &Out, 0, &threadID);
pipeThreads[1] = CreateThread(NULL, 0, ReadFromPipe, &Err, 0, &threadID);
/*
* Block waiting for the process to end.
*/
WaitForSingleObject(pi.hProcess, INFINITE);
CloseHandle(pi.hProcess);
/*
* Wait for our pipe to get done reading, should it be a little slow.
*/
WaitForMultipleObjects(2, pipeThreads, TRUE, 500);
CloseHandle(pipeThreads[0]);
CloseHandle(pipeThreads[1]);
/*
* Look for the commandline warning code in the stderr stream.
*/
return !(strstr(Out.buffer, "LNK1117") != NULL ||
strstr(Err.buffer, "LNK1117") != NULL ||
strstr(Out.buffer, "LNK4044") != NULL ||
strstr(Err.buffer, "LNK4044") != NULL ||
strstr(Out.buffer, "LNK4224") != NULL ||
strstr(Err.buffer, "LNK4224") != NULL);
}
static DWORD WINAPI
ReadFromPipe(
LPVOID args)
{
pipeinfo *pi = (pipeinfo *) args;
char *lastBuf = pi->buffer;
DWORD dwRead;
BOOL ok;
again:
if (lastBuf - pi->buffer + CHUNK > STATICBUFFERSIZE) {
CloseHandle(pi->pipe);
return (DWORD)-1;
}
ok = ReadFile(pi->pipe, lastBuf, CHUNK, &dwRead, 0L);
if (!ok || dwRead == 0) {
CloseHandle(pi->pipe);
return 0;
}
lastBuf += dwRead;
goto again;
return 0; /* makes the compiler happy */
}
static int
IsIn(
const char *string,
const char *substring)
{
return (strstr(string, substring) != NULL);
}
/*
* GetVersionFromFile --
* Looks for a match string in a file and then returns the version
* following the match where a version is anything acceptable to
* package provide or package ifneeded.
*/
static const char *
GetVersionFromFile(
const char *filename,
const char *match,
int numdots)
{
static char szBuffer[100];
char *szResult = NULL;
FILE *fp = fopen(filename, "rt");
if (fp != NULL) {
/*
* Read data until we see our match string.
*/
while (fgets(szBuffer, sizeof(szBuffer), fp) != NULL) {
LPSTR p, q;
p = strstr(szBuffer, match);
if (p != NULL) {
/*
* Skip to first digit after the match.
*/
p += strlen(match);
while (*p && !isdigit((unsigned char)*p)) {
++p;
}
/*
* Find ending whitespace.
*/
q = p;
while (*q && (strchr("0123456789.ab", *q)) && (((!strchr(".ab", *q)
&& !strchr("ab", q[-1])) || --numdots))) {
++q;
}
*q = 0;
szResult = p;
break;
}
}
fclose(fp);
}
return szResult;
}
/*
* List helpers for the SubstituteFile function
*/
typedef struct list_item_t {
struct list_item_t *nextPtr;
char * key;
char * value;
} list_item_t;
/* insert a list item into the list (list may be null) */
static list_item_t *
list_insert(list_item_t **listPtrPtr, const char *key, const char *value)
{
list_item_t *itemPtr = (list_item_t *)malloc(sizeof(list_item_t));
if (itemPtr) {
itemPtr->key = strdup(key);
itemPtr->value = strdup(value);
itemPtr->nextPtr = NULL;
while(*listPtrPtr) {
listPtrPtr = &(*listPtrPtr)->nextPtr;
}
*listPtrPtr = itemPtr;
}
return itemPtr;
}
static void
list_free(list_item_t **listPtrPtr)
{
list_item_t *tmpPtr, *listPtr = *listPtrPtr;
while (listPtr) {
tmpPtr = listPtr;
listPtr = listPtr->nextPtr;
free(tmpPtr->key);
free(tmpPtr->value);
free(tmpPtr);
}
}
/*
* SubstituteFile --
* As windows doesn't provide anything useful like sed and it's unreliable
* to use the tclsh you are building against (consider x-platform builds -
* eg compiling AMD64 target from IX86) we provide a simple substitution
* option here to handle autoconf style substitutions.
* The substitution file is whitespace and line delimited. The file should
* consist of lines matching the regular expression:
* \s*\S+\s+\S*$
*
* Usage is something like:
* nmakehlp -S << $** > $@
* @PACKAGE_NAME@ $(PACKAGE_NAME)
* @PACKAGE_VERSION@ $(PACKAGE_VERSION)
* <<
*/
static int
SubstituteFile(
const char *substitutions,
const char *filename)
{
static char szBuffer[1024], szCopy[1024];
list_item_t *substPtr = NULL;
FILE *fp, *sp;
fp = fopen(filename, "rt");
if (fp != NULL) {
/*
* Build a list of substutitions from the first filename
*/
sp = fopen(substitutions, "rt");
if (sp != NULL) {
while (fgets(szBuffer, sizeof(szBuffer), sp) != NULL) {
unsigned char *ks, *ke, *vs, *ve;
ks = (unsigned char*)szBuffer;
while (ks && *ks && isspace(*ks)) ++ks;
ke = ks;
while (ke && *ke && !isspace(*ke)) ++ke;
vs = ke;
while (vs && *vs && isspace(*vs)) ++vs;
ve = vs;
while (ve && *ve && !(*ve == '\r' || *ve == '\n')) ++ve;
*ke = 0, *ve = 0;
list_insert(&substPtr, (char*)ks, (char*)vs);
}
fclose(sp);
}
/* debug: dump the list */
#ifndef NDEBUG
{
int n = 0;
list_item_t *p = NULL;
for (p = substPtr; p != NULL; p = p->nextPtr, ++n) {
fprintf(stderr, "% 3d '%s' => '%s'\n", n, p->key, p->value);
}
}
#endif
/*
* Run the substitutions over each line of the input
*/
while (fgets(szBuffer, sizeof(szBuffer), fp) != NULL) {
list_item_t *p = NULL;
for (p = substPtr; p != NULL; p = p->nextPtr) {
char *m = strstr(szBuffer, p->key);
if (m) {
char *cp, *op, *sp;
cp = szCopy;
op = szBuffer;
while (op != m) *cp++ = *op++;
sp = p->value;
while (sp && *sp) *cp++ = *sp++;
op += strlen(p->key);
while (*op) *cp++ = *op++;
*cp = 0;
memcpy(szBuffer, szCopy, sizeof(szCopy));
}
}
printf("%s", szBuffer);
}
list_free(&substPtr);
}
fclose(fp);
return 0;
}
BOOL FileExists(LPCTSTR szPath)
{
#ifndef INVALID_FILE_ATTRIBUTES
#define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
#endif
DWORD pathAttr = GetFileAttributes(szPath);
return (pathAttr != INVALID_FILE_ATTRIBUTES &&
!(pathAttr & FILE_ATTRIBUTE_DIRECTORY));
}
/*
* QualifyPath --
*
* This composes the current working directory with a provided path
* and returns the fully qualified and normalized path.
* Mostly needed to setup paths for testing.
*/
static int
QualifyPath(
const char *szPath)
{
char szCwd[MAX_PATH + 1];
GetFullPathName(szPath, sizeof(szCwd)-1, szCwd, NULL);
printf("%s\n", szCwd);
return 0;
}
/*
* Implements LocateDependency for a single directory. See that command
* for an explanation.
* Returns 0 if found after printing the directory.
* Returns 1 if not found but no errors.
* Returns 2 on any kind of error
* Basically, these are used as exit codes for the process.
*/
static int LocateDependencyHelper(const char *dir, const char *keypath)
{
HANDLE hSearch;
char path[MAX_PATH+1];
size_t dirlen;
int keylen, ret;
WIN32_FIND_DATA finfo;
if (dir == NULL || keypath == NULL)
return 2; /* Have no real error reporting mechanism into nmake */
dirlen = strlen(dir);
if ((dirlen + 3) > sizeof(path))
return 2;
strncpy(path, dir, dirlen);
strncpy(path+dirlen, "\\*", 3); /* Including terminating \0 */
keylen = strlen(keypath);
#if 0 /* This function is not available in Visual C++ 6 */
/*
* Use numerics 0 -> FindExInfoStandard,
* 1 -> FindExSearchLimitToDirectories,
* as these are not defined in Visual C++ 6
*/
hSearch = FindFirstFileEx(path, 0, &finfo, 1, NULL, 0);
#else
hSearch = FindFirstFile(path, &finfo);
#endif
if (hSearch == INVALID_HANDLE_VALUE)
return 1; /* Not found */
/* Loop through all subdirs checking if the keypath is under there */
ret = 1; /* Assume not found */
do {
int sublen;
/*
* We need to check it is a directory despite the
* FindExSearchLimitToDirectories in the above call. See SDK docs
*/
if ((finfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
continue;
sublen = strlen(finfo.cFileName);
if ((dirlen+1+sublen+1+keylen+1) > sizeof(path))
continue; /* Path does not fit, assume not matched */
strncpy(path+dirlen+1, finfo.cFileName, sublen);
path[dirlen+1+sublen] = '\\';
strncpy(path+dirlen+1+sublen+1, keypath, keylen+1);
if (FileExists(path)) {
/* Found a match, print to stdout */
path[dirlen+1+sublen] = '\0';
QualifyPath(path);
ret = 0;
break;
}
} while (FindNextFile(hSearch, &finfo));
FindClose(hSearch);
return ret;
}
/*
* LocateDependency --
*
* Locates a dependency for a package.
* keypath - a relative path within the package directory
* that is used to confirm it is the correct directory.
* The search path for the package directory is currently only
* the parent and grandparent of the current working directory.
* If found, the command prints
* name_DIRPATH=<full path of located directory>
* and returns 0. If not found, does not print anything and returns 1.
*/
static int LocateDependency(const char *keypath)
{
size_t i;
int ret;
static const char *paths[] = {"..", "..\\..", "..\\..\\.."};
for (i = 0; i < (sizeof(paths)/sizeof(paths[0])); ++i) {
ret = LocateDependencyHelper(paths[i], keypath);
if (ret == 0)
return ret;
}
return ret;
}
/*
* Local variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* indent-tabs-mode: t
* tab-width: 8
* End:
*/
Documentation