tester: Make the path to covoar absolute to ignore the env PATH.

Using the environment's path to find covoar allow invalid versions
to be used which may vary in subtle ways. Find and use the covoar
that is build with the version of 'rtems-test'.

This patch means you do not need to install the tools before
running improving the development experience.

Closes #3458

tester/rt/coverage.py

@@ -33,6 +33,7 @@ from __future__ import print_function
 import datetime
 import shutil
 import os
+import sys
 
 try:
     import configparser
@@ -245,21 +246,21 @@ class symbol_parser(object):
     def __init__(self,
                  symbol_config_path,
                  symbol_select_path,
-                 coverage_arg,
+                 symbol_set,
                  build_dir):
         self.symbol_select_file = symbol_select_path
         self.symbol_file = symbol_config_path
         self.build_dir = build_dir
         self.symbol_sets = {}
-        self.cov_arg = coverage_arg
+        self.symbol_set = symbol_set
         self.ssets = []
 
     def parse(self):
         config = configparser.ConfigParser()
         try:
             config.read(self.symbol_file)
-            if self.cov_arg:
-                self.ssets = self.cov_arg.split(',')
+            if self.symbol_set is not None:
+                self.ssets = self.symbol_set.split(',')
             else:
                 self.ssets = config.get('symbol-sets', 'sets').split(',')
                 self.ssets = [sset.encode('utf-8') for sset in self.ssets]
@@ -291,27 +292,41 @@ class covoar(object):
     '''
     Covoar runner
     '''
-    def __init__(self, base_result_dir, config_dir, executables, explanations_txt):
+    def __init__(self, base_result_dir, config_dir, executables, explanations_txt, trace):
         self.base_result_dir = base_result_dir
         self.config_dir = config_dir
         self.executables = ' '.join(executables)
         self.explanations_txt = explanations_txt
         self.project_name = 'RTEMS-5'
+        self.trace = trace
+
+    def _find_covoar(self):
+        covoar_exe = 'covoar'
+        tester_dir = path.dirname(path.abspath(sys.argv[0]))
+        base = path.dirname(tester_dir)
+        exe = path.join(base, 'bin', covoar_exe)
+        if path.isfile(exe):
+            return exe
+        exe = path.join(base, 'build', 'tester', 'covoar', covoar_exe)
+        if path.isfile(exe):
+            return exe
+        raise error.general('coverage: %s not found'% (covoar_exe))
 
     def run(self, set_name, symbol_file):
         covoar_result_dir = path.join(self.base_result_dir, set_name)
-        if (not path.exists(covoar_result_dir)):
+        if not path.exists(covoar_result_dir):
             path.mkdir(covoar_result_dir)
-        if (not path.exists(symbol_file)):
-            raise error.general('symbol set file: coverage %s not created, skipping %s'% (symbol_file, set_name))
-        command = 'covoar -S ' + symbol_file + \
+        if not path.exists(symbol_file):
+            raise error.general('coverage: no symbol set file: %s'% (symbol_file))
+        exe = self._find_covoar()
+        command = exe + ' -S ' + symbol_file + \
                   ' -O ' + covoar_result_dir + \
                   ' -E ' + self.explanations_txt + \
                   ' -p ' + self.project_name + ' ' + self.executables
         log.notice()
         log.notice('Running coverage analysis: %s (%s)' % (set_name, covoar_result_dir))
         start_time = datetime.datetime.now()
-        executor = execute.execute(verbose = True, output = self.output_handler)
+        executor = execute.execute(verbose = self.trace, output = self.output_handler)
         exit_code = executor.shell(command, cwd=os.getcwd())
         if exit_code[0] != 0:
             raise error.general('coverage: covoar failure:: %d' % (exit_code[0]))
@@ -325,11 +340,12 @@ class coverage_run(object):
     '''
     Coverage analysis support for rtems-test
     '''
-    def __init__(self, p_macros, coverage_arg, executables):
+    def __init__(self, macros_, executables, symbol_set = None, trace = False):
         '''
         Constructor
         '''
-        self.macros = p_macros
+        self.trace = trace
+        self.macros = macros_
         self.build_dir = self.macros['_cwd']
         self.explanations_txt = self.macros.expand(self.macros['cov_explanations'])
         self.test_dir = path.join(self.build_dir, self.macros['bsp'] + '-coverage')
@@ -346,7 +362,7 @@ class coverage_run(object):
         self.symbol_sets = []
         self.no_clean = int(self.macros['_no_clean'])
         self.report_format = self.macros['cov_report_format']
-        self.coverage_arg = coverage_arg
+        self.symbol_set = symbol_set
         self.target = self.macros['target']
 
     def run(self):
@@ -356,11 +372,12 @@ class coverage_run(object):
             build_dir = build_path_generator(self.executables, self.target).run()
             parser = symbol_parser(self.symbol_config_path,
                                    self.symbol_select_path,
-                                   self.coverage_arg,
+                                   self.symbol_set,
                                    build_dir)
             parser.run()
             covoar_runner = covoar(self.test_dir, self.symbol_select_path,
-                                   self.executables, self.explanations_txt)
+                                   self.executables, self.explanations_txt,
+                                   self.trace)
             covoar_runner.run('score', self.symbol_select_path)
             self._generate_reports();
             self._summarize();
@@ -379,7 +396,8 @@ class coverage_run(object):
 
     def _cleanup(self):
         if not self.no_clean:
-            log.output('Coverage cleaning tempfiles')
+            if self.trace:
+                log.output('Coverage cleaning tempfiles')
             for exe in self.executables:
                 trace_file = exe + '.cov'
                 if path.exists(trace_file):