feat: add compatibility support for QNX Neutrino (#248)

Author: xi-guo-0

loader/icd_platform.h

@@ -19,7 +19,7 @@
 #ifndef _ICD_PLATFORM_H_
 #define _ICD_PLATFORM_H_
 
-#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
+#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || defined(__QNXNTO__)
 
 #define PATH_SEPARATOR  ':'
 #define DIRECTORY_SYMBOL '/'

loader/linux/icd_linux.c

@@ -187,7 +187,11 @@ static inline void khrIcdOsDirEnumerate(const char *path, const char *env,
                          break;
                     memcpy(nameCopy, dirEntry->d_name, sz);
                     dirElems[elemCount].d_name = nameCopy;
+#if defined(__QNXNTO__)
+                    dirElems[elemCount].d_type = _DEXTRA_FIRST(dirEntry)->d_type;
+#else
                     dirElems[elemCount].d_type = dirEntry->d_type;
+#endif
                     elemCount++;
                 }
                 qsort(dirElems, elemCount, sizeof(struct dirElem), compareDirElem);

loader/linux/icd_linux_envvars.c

@@ -32,7 +32,7 @@ char *khrIcd_getenv(const char *name) {
 }
 
 char *khrIcd_secure_getenv(const char *name) {
-#if defined(__APPLE__)
+#if defined(__APPLE__) || defined(__QNXNTO__)
     // Apple does not appear to have a secure getenv implementation.
     // The main difference between secure getenv and getenv is that secure getenv
     // returns NULL if the process is being run with elevated privileges by a normal user.