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authorJose Fonseca <jfonseca@vmware.com>2015-03-19 13:30:19 +0000
committerJose Fonseca <jfonseca@vmware.com>2015-03-22 08:23:24 +0000
commit9c1c657e19ff373315b517ca58f87227b336f3b7 (patch)
tree7b7e1261eaee75b7d2be73632ae5c7751f0094b1 /scons
parent015e8b6384bbdba8421c5dafd4783dba4d3a9182 (diff)
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scons: Prefer winflexbison, and use --wincompat when available.
This avoids MSVC the warning warning C4013: 'isatty' undefined; assuming extern returning int with certain versions of flex. Reviewed-by: Brian Paul <brianp@vmware.com> v2: Add win flex-bison link to docs/install.html.
Diffstat (limited to 'scons')
-rwxr-xr-xscons/gallium.py40
1 files changed, 33 insertions, 7 deletions
diff --git a/scons/gallium.py b/scons/gallium.py
index 9924f1e..1564970 100755
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -35,7 +35,7 @@ import os
import os.path
import re
import subprocess
-import platform as _platform
+import platform as host_platform
import sys
import tempfile
@@ -147,6 +147,17 @@ def check_cc(env, cc, expr, cpp_opt = '-E'):
return result
+def check_prog(env, prog):
+ """Check whether this program exists."""
+
+ sys.stdout.write('Checking for %s ... ' % prog)
+
+ result = env.Detect(prog)
+
+ sys.stdout.write(' %s\n' % ['no', 'yes'][int(bool(result))])
+ return result
+
+
def generate(env):
"""Common environment generation code"""
@@ -186,7 +197,7 @@ def generate(env):
env['gcc'] = 0
env['clang'] = 0
env['msvc'] = 0
- if _platform.system() == 'Windows':
+ if host_platform.system() == 'Windows':
env['msvc'] = check_cc(env, 'MSVC', 'defined(_MSC_VER)', '/E')
if not env['msvc']:
env['gcc'] = check_cc(env, 'GCC', 'defined(__GNUC__) && !defined(__clang__)')
@@ -210,10 +221,10 @@ def generate(env):
# Determine whether we are cross compiling; in particular, whether we need
# to compile code generators with a different compiler as the target code.
- host_platform = _platform.system().lower()
- if host_platform.startswith('cygwin'):
- host_platform = 'cygwin'
- host_machine = os.environ.get('PROCESSOR_ARCHITEW6432', os.environ.get('PROCESSOR_ARCHITECTURE', _platform.machine()))
+ hosthost_platform = host_platform.system().lower()
+ if hosthost_platform.startswith('cygwin'):
+ hosthost_platform = 'cygwin'
+ host_machine = os.environ.get('PROCESSOR_ARCHITEW6432', os.environ.get('PROCESSOR_ARCHITECTURE', host_platform.machine()))
host_machine = {
'x86': 'x86',
'i386': 'x86',
@@ -224,7 +235,7 @@ def generate(env):
'AMD64': 'x86_64',
'x86_64': 'x86_64',
}.get(host_machine, 'generic')
- env['crosscompile'] = platform != host_platform
+ env['crosscompile'] = platform != hosthost_platform
if machine == 'x86_64' and host_machine != 'x86_64':
env['crosscompile'] = True
env['hostonly'] = False
@@ -630,7 +641,22 @@ def generate(env):
# disable all MSVC extensions.
'-DYY_USE_CONST=',
])
+ if host_platform.system() == 'Windows':
+ # Prefer winflexbison binaries, as not only they are easier to install
+ # (no additional dependencies), but also better Windows support.
+ if check_prog(env, 'win_flex'):
+ env["LEX"] = 'win_flex'
+ env.Append(LEXFLAGS = [
+ # windows compatibility (uses <io.h> instead of <unistd.h> and
+ # _isatty, _fileno functions)
+ '--wincompat'
+ ])
+
env.Tool('yacc')
+ if host_platform.system() == 'Windows':
+ if check_prog(env, 'win_bison'):
+ env["YACC"] = 'win_bison'
+
if env['llvm']:
env.Tool('llvm')