Never change configure manually

Configure should be changed by editing configure.in and rerunning
autoconf. Also, since configure is always auto-generated and, as it
turns out, autoconf adds some spurious empty lines at the end - thus we
should exclude this file from the end-of-file pre-commit hook.

.pre-commit-config.yaml

@@ -13,6 +13,7 @@ repos:
     -   id: debug-statements
     -   id: destroyed-symlinks
     -   id: end-of-file-fixer
+        exclude: configure
     -   id: mixed-line-ending
         exclude: ref_vtk_hexahedra.vtu
     -   id: trailing-whitespace

configure

@@ -18071,3 +18071,5 @@ if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
 printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi
+
+

configure.in

@@ -601,7 +601,7 @@ EOF
     FCFLAGS="$old_fcflags"
 
     FFLAGS="-fbounds-check -Wall ${FFLAGS}"
-    FCFLAGS="-fbounds-check -Wall -Wimplicit-interface -Wno-surprising ${FCFLAGS}"
+    FCFLAGS="-fbounds-check -Wall -Wno-surprising -Wno-unused-function -Wno-unused-dummy-argument ${FCFLAGS}"
     CFLAGS="-fbounds-check -Wall ${CFLAGS}"
     CXXFLAGS="-fbounds-check -Wall ${CXXFLAGS}"
     if test "$DARWIN" = "no" ; then