build: don't turn off -Wmissing-prototypes

* configure.ac (WERROR_CFLAGS): Don't turn off -Wmissing-prototypes.
* src/pch.c (skip_hex_digits): Declare static.
* src/bestmatch.h (bestmatch): Likewise.

3 files changed, 2 insertions, 3 deletions

diff --git a/configure.ac b/configure.ac
index eac3bd4..73acd29 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,7 +86,6 @@ if test "$gl_gcc_warnings" = yes; then
   nw="$nw -Wstack-protector"        # not worth working around
   # things to fix soon:
   nw="$nw -Wshadow"
-  nw="$nw -Wmissing-prototypes"
   nw="$nw -Wmissing-format-attribute"
   nw="$nw -Wmissing-declarations"
   nw="$nw -Wstrict-overflow"
diff --git a/src/bestmatch.h b/src/bestmatch.h
index d3bba7e..958b1ca 100644
--- a/src/bestmatch.h
+++ b/src/bestmatch.h
@@ -51,7 +51,7 @@
  * search.
  */
 
-OFFSET
+static OFFSET
 bestmatch(OFFSET xoff, OFFSET xlim, OFFSET yoff, OFFSET ylim,
 	  OFFSET min, OFFSET max, OFFSET *py)
 {
diff --git a/src/pch.c b/src/pch.c
index b25424f..d07c1aa 100644
--- a/src/pch.c
+++ b/src/pch.c
@@ -366,7 +366,7 @@ sha1_says_nonexistent(char const *sha1, char const *end)
   return s == end;
 }
 
-char const *
+static char const *
 skip_hex_digits (char const *str)
 {
   char const *s;