don't suppress compiler warnings; update NEWS

Author: kevinushey

inst/NEWS

@@ -1,6 +1,8 @@
-RcppParallel 2018.1.0 (unreleased)
+RcppParallel 4.4.0
 ------------------------------------------------------------------------
 
+* Respect user-defined compiler settings (e.g. from ~/.R/Makevars).
+* Remove TBB's attempts to suppress compiler diagnostics.
 * Allow setting the number of threads to use via RCPP_PARALLEL_NUM_THREADS
   environment variable.
 * Update to TBB 2018 Update 1.

inst/include/tbb/flow_graph_opencl_node.h

@@ -1233,7 +1233,7 @@ void opencl_factory<DeviceFilter>::init_once() {
             // Suppress "declared deprecated" warning for the next line.
 #if __TBB_GCC_WARNING_SUPPRESSION_PRESENT
 #pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+// #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
 #if _MSC_VER || __INTEL_COMPILER
 #pragma warning( push )

src/Makevars.in

@@ -1,6 +1,3 @@
-# Calls to 'firstword' are used to strip out
-# a possible '-m64' attached to the CC variable
-# (or other compiler arguments)
 PKG_CPPFLAGS += @CXX11STD@ -I../inst/include/
 
 ifeq ($(OS), Windows_NT)

src/tbb/include/tbb/flow_graph_opencl_node.h

@@ -1128,7 +1128,7 @@ class opencl_factory {
                 // Suppress "declared deprecated" warning for the next line.
 #if __TBB_GCC_WARNING_SUPPRESSION_PRESENT
 #pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+// #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
 #if _MSC_VER || __INTEL_COMPILER
 #pragma warning( push )

src/tbb/include/tbb/tbb_machine.h

@@ -665,7 +665,7 @@ struct machine_load_store_seq_cst<T,8> {
     static void store ( volatile T &location, T value ) {
 #if __TBB_GCC_VERSION >= 40702
 #pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+// #pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
 #endif
         // An atomic initialization leads to reading of uninitialized memory
         int64_t result = (volatile int64_t&)location;