[Gcl-devel] Windows patch - detect MP_INCLUDE during configure

[David Billinghurst]

A windows configure fails to set MP_INCLUDE, and therefore doesn't use 
the system gmp library,
since the path to the file gmp.h uses \\ rather than /

Fixed by the following patch for gcl-2.6.10

*** configure.in.orig    Fri Nov 22 11:15:36 2013
--- configure.in    Fri Nov 22 11:16:46 2013
***************
*** 784,790 ****
                  TLIBS="$TLIBS -lgmp"
                  echo "#include \"gmp.h\"" >foo.c
                  echo "int main() {return 0;}" >>foo.c
!                 MP_INCLUDE=`cpp foo.c | grep /gmp.h | head -n 1 | $AWK 
'{print $3}' | tr -d '"'`
                  rm -f foo.c,
                  echo "Cannot use dynamic gmp lib" , echo "Cannot use 
dynamic gmp lib" ),
              echo "Cannot use dynamic gmp lib" ,),
--- 784,790 ----
                  TLIBS="$TLIBS -lgmp"
                  echo "#include \"gmp.h\"" >foo.c
                  echo "int main() {return 0;}" >>foo.c
!                 MP_INCLUDE=`cpp foo.c | grep "[/\|\\]gmp.h" | head -n 
1 | $AWK '{print $3}' | tr -d '"'`
                  rm -f foo.c,
                  echo "Cannot use dynamic gmp lib" , echo "Cannot use 
dynamic gmp lib" ),
              echo "Cannot use dynamic gmp lib" ,),