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check that m4 is available before trying to use it

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--HG--
extra : convert_revision : 8d4d75451fc003e3843e306008ad0632bbf0217a
This commit is contained in:
Ali Saidi 2007-05-31 15:33:17 -04:00
parent 0193476ea7
commit 473bf1a66a
1 changed files with 6 additions and 0 deletions
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6
ext/libelf/SConscript
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@ -92,11 +92,17 @@ if env.get('CC'):
m4env['CC'] = env['CC'] m4env['CC'] = env['CC']
if env.get('CXX'): if env.get('CXX'):
m4env['CXX'] = env['CXX'] m4env['CXX'] = env['CXX']
# If we have gm4 use it # If we have gm4 use it
if subprocess.Popen("gm4 --version", shell=True, stdout=subprocess.PIPE, if subprocess.Popen("gm4 --version", shell=True, stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, close_fds=True).communicate()[0].find('GNU') >= 0: stderr=subprocess.STDOUT, close_fds=True).communicate()[0].find('GNU') >= 0:
m4env['M4'] = 'gm4' m4env['M4'] = 'gm4'
# Check that m4 is available
if not m4env.get('M4'):
print "Error: Can't find version of M4 macro processor. Please install M4 and try again."
Exit(1)
m4env.Append(M4FLAGS='-DSRCDIR=%s' % Dir('.').path) m4env.Append(M4FLAGS='-DSRCDIR=%s' % Dir('.').path)
m4env['M4COM'] = '$M4 $M4FLAGS $SOURCES > $TARGET' m4env['M4COM'] = '$M4 $M4FLAGS $SOURCES > $TARGET'
m4env.M4(target=File('libelf_convert.c'), m4env.M4(target=File('libelf_convert.c'),