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Fix Path::GetMainExecutable on cygwin, patch by Sam Bishop.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48328 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-03-13 05:22:05 +00:00
parent a17fa28ac2
commit 3bdfa04cbe
1 changed files with 10 additions and 1 deletions
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11
lib/System/Unix/Path.inc
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@ -251,8 +251,17 @@ Path::GetCurrentDirectory() {
/// GetMainExecutable - Return the path to the main executable, given the
/// value of argv[0] from program startup.
Path Path::GetMainExecutable(const char *argv0, void *MainAddr) {
#if defined(__CYGWIN__)
char exe_link[64];
snprintf(exe_link, sizeof(exe_link), "/proc/%d/exe", getpid());
char exe_path[MAXPATHLEN];
ssize_t len = readlink(exe_link, exe_path, sizeof(exe_path));
if (len > 0 && len < MAXPATHLEN - 1) {
exe_path[len] = '\0';
return Path(std::string(exe_path));
}
#elif defined(HAVE_DLFCN_H)
// Use dladdr to get executable path if available.
#ifdef HAVE_DLFCN_H
Dl_info DLInfo;
int err = dladdr(MainAddr, &DLInfo);
if (err != 0)