fix compile


git-svn-id: https://geuz.org/svn/gmsh/trunk@19779 59c8cabf-10d6-4a28-b43f-3936b85956c4
test 2nd path for exe


git-svn-id: https://geuz.org/svn/gmsh/trunk@19780 59c8cabf-10d6-4a28-b43f-3936b85956c4
fix warnings


git-svn-id: https://geuz.org/svn/gmsh/trunk@19781 59c8cabf-10d6-4a28-b43f-3936b85956c4