hipcc: HCC workaround no longer needs env var

Change-Id: I81f4eafddbda5e9e2f1082932dd502ab451cfc24

bin/hipcc

@@ -76,6 +76,7 @@ if ($HIP_PLATFORM eq "hcc") {
     $HCC_HOME=$ENV{'HCC_HOME'} // $hipConfig{'HCC_HOME'} // "/opt/rocm/hcc";
 
     $HCC_VERSION=`${HCC_HOME}/bin/hcc --version | cut -d" " -f9 | tr -d "\n"`;
+    $HCC_VERSION_MAJOR=`${HCC_HOME}/bin/hcc --version | cut -d" " -f9 | cut -d"." -f1 | tr -d "\n"`;
 
     $ROCM_PATH=$ENV{'ROCM_PATH'} // "/opt/rocm";
 
@@ -92,14 +93,14 @@ if ($HIP_PLATFORM eq "hcc") {
     $HIPCXXFLAGS = $HCCFLAGS;
 
     #### GCC system includes workaround ####
-    $WA = $ENV{'HIP_HCC_SYS_INCLUDES_WA'} // 0;
+    $HCC_WA_FLAGS = " ";
-    if (${WA}) {
+    if ($HCC_VERSION_MAJOR eq 1) {
         my $GCC_CUR_VER = `gcc -dumpversion`;
         my $GPP_CUR_VER = `g++ -dumpversion`;
         $GCC_CUR_VER =~ s/\R//g;
         $GPP_CUR_VER =~ s/\R//g;
         if (${GCC_CUR_VER} eq ${GPP_CUR_VER}) {
-            $HIPCXXFLAGS .= "-I/usr/include/x86_64-linux-gnu -I/usr/include/x86_64-linux-gnu/c++/${GCC_CUR_VER} -I/usr/include/c++/${GCC_CUR_VER}";
+            $HCC_WA_FLAGS .= " -I/usr/include/x86_64-linux-gnu -I/usr/include/x86_64-linux-gnu/c++/${GCC_CUR_VER} -I/usr/include/c++/${GCC_CUR_VER} ";
         }
     }
 
@@ -260,6 +261,7 @@ foreach $arg (@ARGV)
     if(($arg eq '-stdlib=libstdc++') and ($setStdLib eq 0))
     {
         $HIPCXXFLAGS .= " -stdlib=libstdc++";
+        $HIPCXXFLAGS .= $HCC_WA_FLAGS;
         $setStdLib = 1;
     }
     if($arg eq '--version') {
@@ -322,6 +324,7 @@ if ($buildDeps and $HIP_PLATFORM eq 'nvcc') {
 if ($setStdLib eq 0 and $HIP_PLATFORM eq 'hcc')
 {
     $HIPCXXFLAGS .= " -stdlib=libstdc++";
+    $HIPCXXFLAGS .= $HCC_WA_FLAGS;
 }
 
 if ($needHipHcc) {