Compilation with conda build (#13083)

* Compilation with conda forge

* Fixed compilation with gcc 12

* Fixed tests compilation

* use macro instead of function

* Fixed uninitialized variable in tests

* Conda

* Conda

samples/cpp/CMakeLists.txt

@@ -109,9 +109,10 @@ endif()
 ####################################
 
 if(NOT TARGET gflags)
-    if(NOT APPLE)
-        # on Apple only dynamic libraries are available
-        # also, we can easily mix arm64 and x86_64 binaries when cross-compile for Intel CPU
+    if(NOT APPLE AND NOT DEFINED ENV{CONDA_PREFIX})
+        # - conda-forge contains only dynamic libraries
+        # - on Apple only dynamic libraries are available
+        #   also, we can easily mix arm64 and x86_64 binaries when cross-compile for Intel CPU
         find_package(gflags QUIET COMPONENTS nothreads_static)
     endif()