From: stevenknight <stevenknight@fdb21ef1-2011-0410-befe-b5e4ea1792b1>
Date: Sun, 15 Jun 2003 01:45:15 +0000 (+0000)
Subject: Portability fixes for non-GNU lex and yacc.  (Chad Austin)
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=daec12aa6e04ebf599ad5e1e1a198958e5487b68;p=scons.git

Portability fixes for non-GNU lex and yacc.  (Chad Austin)


git-svn-id: http://scons.tigris.org/svn/scons/trunk@713 fdb21ef1-2011-0410-befe-b5e4ea1792b1
---

diff --git a/src/CHANGES.txt b/src/CHANGES.txt
index 3c38ecf1..9b326d36 100644
--- a/src/CHANGES.txt
+++ b/src/CHANGES.txt
@@ -14,6 +14,8 @@ RELEASE 0.15 - XXX
 
   - Fix the _concat() documentation, and add a test for it.
 
+  - Portability fixes for non-GNU versions of lex and yacc.
+
   From Matt Balvin:
 
   - Fix handling of library prefixes when the subdirectory matches
diff --git a/src/engine/SCons/Tool/lex.py b/src/engine/SCons/Tool/lex.py
index 95a53156..9ef21673 100644
--- a/src/engine/SCons/Tool/lex.py
+++ b/src/engine/SCons/Tool/lex.py
@@ -43,9 +43,9 @@ def generate(env):
     c_file.add_action('.l', '$LEXCOM')
     cxx_file.add_action('.ll', '$LEXCOM')
 
-    env['LEX']      = 'lex'
+    env['LEX']      = env.Detect('flex') or 'lex'
     env['LEXFLAGS'] = ''
     env['LEXCOM']   = '$LEX $LEXFLAGS -t $SOURCES > $TARGET'
     
 def exists(env):
-    return env.Detect('lex')
+    return env.Detect(['flex', 'lex'])
diff --git a/src/engine/SCons/Tool/yacc.py b/src/engine/SCons/Tool/yacc.py
index 0c80cf83..7fabbf24 100644
--- a/src/engine/SCons/Tool/yacc.py
+++ b/src/engine/SCons/Tool/yacc.py
@@ -42,9 +42,9 @@ def generate(env):
     c_file.add_action('.y', '$YACCCOM')
     cxx_file.add_action('.yy', '$YACCCOM')
 
-    env['YACC']      = 'yacc'
+    env['YACC']      = env.Detect('bison') or 'yacc'
     env['YACCFLAGS'] = ''
     env['YACCCOM']   = '$YACC $YACCFLAGS -o $TARGET $SOURCES'
 
 def exists(env):
-    return env.Detect('yacc')
+    return env.Detect(['bison', 'yacc'])
diff --git a/src/setupTests.py b/src/setupTests.py
index 6f73e5ea..b7adf0cf 100644
--- a/src/setupTests.py
+++ b/src/setupTests.py
@@ -77,7 +77,7 @@ version_lib = '%s/usr/lib/%s' % (root, scons_version)
 def installed(lib):
     return 'Installed SCons library modules into %s' % lib
 
-os.system("tar zxf %s" % tar_gz)
+os.system("gunzip -c %s | tar xf -" % tar_gz)
 
 # Verify that a virgin installation installs the standalone library.
 test.run(chdir = scons_version,
diff --git a/test/YACC.py b/test/YACC.py
index b44add17..68a0ba52 100644
--- a/test/YACC.py
+++ b/test/YACC.py
@@ -118,6 +118,7 @@ yyerror(s)
 char *s;
 {
     fprintf(stderr, "%%s\n", s);
+    return 0;
 }
 
 yylex()
diff --git a/test/YACCFLAGS.py b/test/YACCFLAGS.py
index 3ed6b6b2..022b2383 100644
--- a/test/YACCFLAGS.py
+++ b/test/YACCFLAGS.py
@@ -107,6 +107,7 @@ yyerror(s)
 char *s;
 {
     fprintf(stderr, "%%s\n", s);
+    return 0;
 }
 
 yylex()