updated allow ptrace to remove printing multiple times when the wrapper is loaded and updated launch r to use relative path

Author: avinab-neogy

scripts/allow_ptrace.c

@@ -3,5 +3,4 @@
 
 __attribute__((constructor)) void allow_ptrace() {
     prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY);
-    fprintf(stderr, "allow_ptrace: called\n");
 }

scripts/launch_r.sh

@@ -1,6 +1,5 @@
 #!/bin/bash
 
-WORK_DIR=$PWD
-export LD_PRELOAD="$WORK_DIR/scripts/allow_ptrace.so"
-# exec "$WORK_DIR/build/r-devel/bin/R" "$@"
+export LD_PRELOAD="./scripts/allow_ptrace.so"
+# # `which_r.sh` sets the R binary used in the command below
 exec /usr/bin/R "$@"