uhd::paths - fixing `get_app_path` to use correct `get_env_var` function

Also added new enviornment variable, "UHDCALIBPATH", so that users can
use something other than system-required environment paths.

1 files changed, 7 insertions, 4 deletions

diff --git a/host/lib/utils/paths.cpp b/host/lib/utils/paths.cpp
index e304555bd..235c2607d 100644
--- a/host/lib/utils/paths.cpp
+++ b/host/lib/utils/paths.cpp
@@ -173,11 +173,14 @@ std::string uhd::get_tmp_path(void){
 }
 
 std::string uhd::get_app_path(void){
-    const char *appdata_path = std::getenv("APPDATA");
-    if (appdata_path != NULL) return appdata_path;
+    const std::string uhdcalib_path = get_env_var("UHDCALIBPATH");
+    if (not uhdcalib_path.empty()) return uhdcalib_path;
 
-    const char *home_path = std::getenv("HOME");
-    if (home_path != NULL) return home_path;
+    const std::string appdata_path = get_env_var("APPDATA");
+    if (not appdata_path.empty()) return appdata_path;
+
+    const std::string home_path = get_env_var("HOME");
+    if (not home_path.empty()) return home_path;
 
     return uhd::get_tmp_path();
 }