+/* gcc on mingw is hardcoded to use /mingw (which is c:/mingw) to
+ find various files. If this is a different version of mingw to the
+ one that we have in the GHC tree then things can go wrong. We
+ therefore need to add various -B flags to the gcc commandline,
+ so that it uses our in-tree mingw. Hence this wrapper. */
+
+#include "cwrapper.h"
#include "getLocation.h"
-#include <process.h>
+
#include <stdio.h>
#include <stdlib.h>
-#include <stdarg.h>
-
-static void die(char *msg) {
- fprintf(stderr, "%s", msg);
- exit(1);
-}
-
-static char *mkString(const char *fmt, ...) {
- char *p;
- int i, j;
- va_list argp;
-
- va_start(argp, fmt);
- i = vsnprintf(p, 0, fmt, argp);
- va_end(argp);
-
- if (i < 0) {
- die("snprintf failed\n");
- }
-
- p = malloc(i + 1);
- if (p == NULL) {
- die("malloc failed\n");
- }
-
- va_start(argp, fmt);
- j = vsnprintf(p, i + 1, fmt, argp);
- va_end(argp);
- if (i < 0) {
- die("snprintf failed\n");
- }
-
- return p;
-}
-
-char *quote(char *str) {
- char *quotedStr;
- char *p;
- int i;
-
- quotedStr = malloc(2 * strlen(str) + 2 + 1);
- if (quotedStr == NULL) {
- die("malloc failed\n");
- }
- p = quotedStr;
- *p++ = '"';
- while (*str) {
- if (*str == '"') {
- *p++ = '\\';
- }
- *p++ = *str++;
- }
- *p++ = '"';
- *p = '\0';
-
- return quotedStr;
-}
int main(int argc, char** argv) {
- char *p;
char *binDir;
char *exePath;
- char *bArg;
- char **newArgv;
- int i, j, ret;
+ char *preArgv[4];
+ char *oldPath;
+ char *newPath;
+ int n;
binDir = getExecutablePath();
exePath = mkString("%s/realgcc.exe", binDir);
+ /* We need programs like
+ inplace/mingw/libexec/gcc/mingw32/4.5.0/cc1.exe
+ to be able to find the DLLs in inplace/mingw/bin, so we need to
+ add it to $PATH */
+ oldPath = getenv("PATH");
+ if (!oldPath) {
+ die("Couldn't read PATH\n");
+ }
+ n = snprintf(NULL, 0, "PATH=%s;%s", binDir, oldPath);
+ n++;
+ newPath = malloc(n);
+ if (!newPath) {
+ die("Couldn't allocate space for PATH\n");
+ }
+ snprintf(newPath, n, "PATH=%s;%s", binDir, oldPath);
+ n = putenv(newPath);
+ if (n) {
+ die("putenv failed\n");
+ }
+
/* Without these -B args, gcc will still work. However, if you
have a mingw installation in c:/mingw then it will use files
from that in preference to the in-tree files. */
+ preArgv[0] = mkString("-B%s", binDir);
+ preArgv[1] = mkString("-B%s/../lib", binDir);
+ preArgv[2] = mkString("-B%s/../lib/gcc/mingw32/3.4.5", binDir);
+ preArgv[3] = mkString("-B%s/../libexec/gcc/mingw32/3.4.5", binDir);
- newArgv = malloc(sizeof(char *) * (argc + 4 + 1));
- newArgv[0] = quote(exePath);
- newArgv[1] = quote(mkString("-B%s", binDir));
- newArgv[2] = quote(mkString("-B%s/../lib", binDir));
- newArgv[3] = quote(mkString("-B%s/../lib/gcc/mingw32/3.4.5", binDir));
- newArgv[4] = quote(mkString("-B%s/../libexec/gcc/mingw32/3.4.5", binDir));
- for (i = 1; i < argc; i++) {
- newArgv[4 + i] = quote(argv[i]);
- }
- newArgv[4 + argc] = NULL;
- // execv(exePath, argv);
- ret = spawnv(_P_WAIT, exePath, (const char* const*)newArgv);
- if (errno) {
- die("Spawn failed\n");
- }
- exit(ret);
+ run(exePath, 4, preArgv, argc - 1, argv + 1);
}
+