Below is a python script that implements the above and sets
environment variables for parallel compiles. Just save the script to
makesage.py (say) in the sage root dir and run it via
python makesage.py -j8
It reduced the sage-4.0.2 compile to 1hour 51 minutes on a dual quad
AMD 2GHz machine.
--------------------------------------------------------------------------------------
import os,sys
import getopt
def replace_install(sj):
fpin=open('spkg/install',"r")
sinstall=fpin.readlines()
fpin.close()
for iline,sline in enumerate(sinstall):
if 'time make' in sline and '-f standard/deps $1' in sline:
sinstall[iline]='time make '+sj+' -f standard/deps $1\n'
sinstall="".join(sinstall)
fpou=open('spkg/install',"w")
fpou.write(sinstall)
fpou.close()
def main(argv):
sj='-j1'
try:
opts,args=getopt.getopt(argv[1:],"j:")
except getopt.GetoptError:
#print_usage()
sys.exit(1)
for oo,aa in opts:
if oo in ("-j"):
sj="-j"+aa
smake='make '+sj
os.environ['MAKE']=smake
replace_install(sj)
os.system('export MAKE="%s"'%(smake)+' && make')
replace_install(sj)
os.system('export MAKE="%s"'%(smake)+' && make')
replace_install('')
os.system('export MAKE="%s"'%(smake)+' && make')
if __name__ == '__main__':
main(sys.argv)
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