gcctestsuite: Make the script usable on more systems, skip some tests

The script was expecting gcc-3.2 in a specific directory,
works only, when building tcc in the source directory
and creates >3200 files in /tmp (probably a SSD).

Now gcctestsuite.sh works much better.
* use TESTSUITE_PATH, to tell the script the location, where the actual
  gcc.c-torture directory is
* work also, when tcc was build in a separate build directory.
  use TCC_SOURCE_PATH, when guessing the tcc source directory does not work
* use RUNTIME_DIR to redirect compiler output
  (default: XDG_RUNTIME_DIR, then /tmp)
* skip tests for features not implemented in tcc ( *_builtin_*, _Complex )

--
Regards, Detlef

tests/gcctestsuite.sh

@@ -1,31 +1,114 @@
 #!/bin/sh
 
-TESTSUITE_PATH=$HOME/gcc/gcc-3.2/gcc/testsuite/gcc.c-torture
-TCC="./tcc -B. -I. -DNO_TRAMPOLINES"
+if [ -z "$TESTSUITE_PATH" ]
+then
+  if [ -d "$HOME/gcc/gcc-3.2/gcc/testsuite/gcc.c-torture" ]
+  then
+    TESTSUITE_PATH="$HOME/gcc/gcc-3.2/gcc/testsuite/gcc.c-torture"
+  fi
+fi
+
+if [ -z "$TESTSUITE_PATH" ]
+then
+  echo "gcc testsuite not found."
+  echo "define TESTSUITE_PATH to point to the gcc.c-torture directory"
+  exit 1
+fi
+
+if [ -z "$TCC_SOURCE_PATH" ]
+then
+  if [ -f "include/tccdefs.h" ]
+  then
+    TCC_SOURCE_PATH="."
+  elif [ -f "../include/tccdefs.h" ]
+  then
+    TCC_SOURCE_PATH=".."
+  elif [ -f "../tinycc/include/tccdefs.h" ]
+  then
+    TCC_SOURCE_PATH="../tinycc"
+  fi
+fi
+
+if [ -z "$RUNTIME_DIR" ]
+then
+   RUNTIME_DIR=$XDG_RUNTIME_DIR
+fi
+if [ -z "$RUNTIME_DIR" ]
+then
+  RUNTIME_DIR="/tmp"
+fi
+
+if [ -z "$CC" ]
+then
+  if [ -z "$TCC_SOURCE_PATH" ]
+  then
+      echo "tcc not found."
+      echo "define TCC_SOURCE_PATH to point to the tcc source path"
+      exit 1
+  fi
+
+  TCC="./tcc -B. -I$TCC_SOURCE_PATH/ -I$TCC_SOURCE_PATH/include -DNO_TRAMPOLINES"
+else
+  TCC="$CC -O1 -Wno-implicit-int $CFLAGS"
+fi
+
 rm -f tcc.sum tcc.fail
 nb_ok="0"
+nb_skipped="0"
 nb_failed="0"
 nb_exe_failed="0"
 
+# skip some failed tests not implemented in tcc
+# builtin: gcc "__builtins_*"
+# ieee: gcc "__builtins_*" in the ieee directory
+# complex: C99 "_Complex" and gcc "__complex__"
+# misc: stdc features, other arch, gcc extensions (example: gnu_inline in c89)
+#
+
+old_pwd="`pwd`"
+cd "$TESTSUITE_PATH"
+
+skip_builtin="`grep "_builtin_"  compile/*.c  execute/*.c  execute/ieee/*.c | cut -d ':' -f1 | cut -d '/' -f2 |  sort -u `"
+skip_ieee="`grep "_builtin_"   execute/ieee/*.c | cut -d ':' -f1 | cut -d '/' -f3 |  sort -u `"
+skip_complex="`grep -i "_Complex"  compile/*.c  execute/*.c  execute/ieee/*.c | cut -d ':' -f1 | cut -d '/' -f2 |  sort -u `"
+skip_misc="20000120-2.c mipscop-1.c mipscop-2.c mipscop-3.c mipscop-4.c
+   fp-cmp-4f.c fp-cmp-4l.c fp-cmp-8f.c fp-cmp-8l.c pr38016.c "
+
+cd "$old_pwd"
+
 for src in $TESTSUITE_PATH/compile/*.c ; do
-  echo $TCC -o /tmp/tst.o -c $src 
-  $TCC -o /tmp/tst.o -c $src >> tcc.fail 2>&1
+  echo $TCC -o $RUNTIME_DIR/tst.o -c $src
+  $TCC -o $RUNTIME_DIR/tst.o -c $src >> tcc.fail 2>&1
   if [ "$?" = "0" ] ; then
     result="PASS"
     nb_ok=$(( $nb_ok + 1 ))
   else
-    result="FAIL"
-    nb_failed=$(( $nb_failed + 1 ))
+    base=`basename "$src"`
+    skip_me="`echo  $skip_builtin $skip_ieee $skip_complex $skip_misc | grep -w $base`"
+
+    if [ -n "$skip_me" ]
+    then
+      result="SKIP"
+      nb_skipped=$(( $nb_skipped + 1 ))
+    else
+      result="FAIL"
+      nb_failed=$(( $nb_failed + 1 ))
+    fi
   fi
   echo "$result: $src"  >> tcc.sum
 done
 
-for src in $TESTSUITE_PATH/execute/*.c ; do
-  echo $TCC $src -o /tmp/tst -lm
-  $TCC $src -o /tmp/tst -lm >> tcc.fail 2>&1
+if [ -f "$RUNTIME_DIR/tst.o" ]
+then
+    rm -f "$RUNTIME_DIR/tst.o"
+fi
+
+for src in $TESTSUITE_PATH/execute/*.c  $TESTSUITE_PATH/execute/ieee/*.c ; do
+  echo $TCC $src -o $RUNTIME_DIR/tst -lm
+  $TCC $src -o $RUNTIME_DIR/tst -lm >> tcc.fail 2>&1
   if [ "$?" = "0" ] ; then
     result="PASS"
-    if /tmp/tst >> tcc.fail 2>&1
+    if $RUNTIME_DIR/tst >> tcc.fail 2>&1
     then
       result="PASS"
       nb_ok=$(( $nb_ok + 1 ))
@@ -34,14 +117,34 @@ for src in $TESTSUITE_PATH/execute/*.c ; do
       nb_exe_failed=$(( $nb_exe_failed + 1 ))
     fi
   else
-    result="FAIL"
-    nb_failed=$(( $nb_failed + 1 ))
+    base=`basename "$src"`
+    skip_me="`echo $skip_builtin $skip_ieee $skip_complex $skip_misc | grep -w $base`"
+
+    if [ -n "$skip_me" ]
+    then
+      result="SKIP"
+      nb_skipped=$(( $nb_skipped + 1 ))
+    else
+      result="FAIL"
+      nb_failed=$(( $nb_failed + 1 ))
+    fi
   fi
   echo "$result: $src"  >> tcc.sum
 done
 
+if [ -f "$RUNTIME_DIR/tst.o" ]
+then
+    rm -f "$RUNTIME_DIR/tst.o"
+fi
+if [ -f "$RUNTIME_DIR/tst" ]
+then
+    rm -f "$RUNTIME_DIR/tst"
+fi
+
 echo "$nb_ok test(s) ok." >> tcc.sum
 echo "$nb_ok test(s) ok."
+echo "$nb_skipped test(s) skipped." >> tcc.sum
+echo "$nb_skipped test(s) skipped."
 echo "$nb_failed test(s) failed." >> tcc.sum
 echo "$nb_failed test(s) failed."
 echo "$nb_exe_failed test(s) exe failed." >> tcc.sum