maint: adjust to Gnulib -Wsystem-headers change

* configure.ac: Do not suppress -Wsystem-headers, as
Gnulib no longer enables it.

diff --git a/configure.ac b/configure.ac
index aba0d02f7677245ddb2ee758f826f39629175a03..6b052f24d2654741d94d2457f5b89602c1b2fb34 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -179,7 +179,6 @@ if test "$gl_gcc_warnings" = yes; then
   nw="$nw -Winline"                 # It's OK to not inline.
   nw="$nw -Wstrict-overflow"       # It's OK to optimize strictly.
   nw="$nw -Wsuggest-attribute=pure" # Too many warnings for now.
-  nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
   nw="$nw -Wstack-protector"
 
   gl_MANYWARN_ALL_GCC([ws])