travis improvements: look for python3, log output, option to filter

Use autoconf to find either python3 or python.

Add option to travis to filter the contents of stdout or stderr.

Generate the _version.stdout travis matching file from the version
file.

Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>

Makefile.in

@@ -60,7 +60,7 @@ RUNPERL         = $(PERL) $(PERLFLAGS)
 EMPTY		= : >
 SIDE		= @: Generated by side effect
 
-PYTHON3		= python3
+PYTHON3		= @PYTHON3@
 
 INSTALL		= @INSTALL@
 INSTALL_PROGRAM	= @INSTALL_PROGRAM@
@@ -108,7 +108,7 @@ PHONY =
 
 .PHONY: all doc misc install clean distclean cleaner spotless test
 .PHONY: install_doc everything install_everything strip perlreq warnings
-.PHONY: dist tags TAGS nothing manpages nsis editors
+.PHONY: dist tags TAGS nothing manpages nsis editors travis
 
 .c.$(O):
 	$(CC) -c $(ALL_CFLAGS) -o $@ $<
@@ -569,8 +569,16 @@ golden: $(PROGS)
 	cd $(srcdir)/test && \
 		$(RUNPERL) performtest.pl --golden --nasm=../nasm$(X) *.asm
 
-travis: $(PROGS)
-	$(PYTHON3) travis/nasm-t.py run
+#
+# Travis tests
+#
+travis_version = travis/test/_version.stdout
+
+$(travis_version): version
+	printf 'NASM version %s compiled on ?\n' `cat version` > $@
+
+travis: $(PROGS) $(travis_version)
+	$(PYTHON3) travis/nasm-t.py run > travis.log
 
 #
 # Rules to run autogen if necessary

configure.ac

@@ -95,6 +95,7 @@ AC_CHECK_PROGS([NROFF],    nroff,    false)
 AC_CHECK_PROGS([ASCIIDOC], asciidoc, false)
 AC_CHECK_PROGS([XMLTO],    xmlto,    false)
 AC_CHECK_PROGS([XZ],       xz,       false)
+AC_CHECK_PROGS([PYTHON3],  [python3 python], false)
 
 dnl Check for progs needed for manpage generation
 MANPAGES=manpages

travis/nasm-t.py

@@ -405,6 +405,12 @@ def test_run(desc):
         return False
 
     for t in desc['target']:
+        f = None
+        if 'filter' in t:
+            f = t['filter']
+            f_pat = re.compile(f['match'], re.M)
+            f_sub = f['subst']
+
         if 'output' in t:
             output = desc['_base-dir'] + os.sep + t['output']
             match = desc['_base-dir'] + os.sep + t['match']
@@ -420,7 +426,10 @@ def test_run(desc):
             match_data = read_stdfile(match)
             if match_data == None:
                 return test_fail(test, "Can't read " + match)
-            if cmp_std(match, match_data, 'stdout', stdout) == False:
+            out_data = stdout
+            if f:
+                out_data = f_pat.sub(f_sub, out_data, 0)
+            if cmp_std(match, match_data, 'stdout', out_data) == False:
                 return test_fail(desc['_test-name'], "Stdout mismatch")
             else:
                 stdout = ""
@@ -430,7 +439,10 @@ def test_run(desc):
             match_data = read_stdfile(match)
             if match_data == None:
                 return test_fail(test, "Can't read " + match)
-            if cmp_std(match, match_data, 'stderr', stderr) == False:
+            out_data = stderr
+            if f:
+                out_data = f_pat.sub(f_sub, out_data, 0)
+            if cmp_std(match, match_data, 'stderr', out_data) == False:
                 return test_fail(desc['_test-name'], "Stderr mismatch")
             else:
                 stderr = ""

travis/test/_version.json

@@ -1,7 +1,12 @@
 {
-	"description": "Check the NASM version",
-	"target": [
-		{ "option": "-v", "stdout": "_version.stdout" }
-	],
-	"error": "over"
+    "description": "Check the NASM version",
+    "target": [
+	{ "option": "-v", "stdout": "_version.stdout",
+	  "filter": {
+	      "match": "(compiled on )\\S.*$",
+	      "subst": "\\1?"
+	  }
+	}
+    ],
+    "error": "over"
 }

travis/test/_version.stdout

@@ -1 +0,0 @@
-NASM version 2.16rc0 compiled on Jul  3 2020