Merge pull request #21458 from perrozzi/sherpaTMP

set TMPDIR variable to soft link pointing to PWD 93x

GeneratorInterface/SherpaInterface/src/SherpackUtilities.cc

@@ -1,5 +1,7 @@
 #include "GeneratorInterface/SherpaInterface/interface/SherpackUtilities.h"
 #include <unistd.h>
+#include <cstdlib>
+
 namespace spu {
 
 // functions for inflating (and deflating)
@@ -153,6 +155,13 @@ void zerr(int ret)
 /* compress or decompress from stdin to stdout */
 int Unzip(std::string infile, std::string outfile)
 {
+    std::string tmpdir = getenv("TMPDIR");
+    if (tmpdir.size() > 50 ){
+      std::string command = "ln -s $PWD "+tmpdir+"/tmp;";
+      system(command.c_str());
+      command = tmpdir+"/tmp";
+      setenv("TMPDIR",command.c_str(), true);
+    }
     int ret;
 	FILE *in = fopen(infile.c_str(),"r");
 	if (!in) return -1;