From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Tue, 13 Sep 2022 13:07:28 +0000 (+0200)
Subject: make builds pass with -Werror on _my_ system
X-Git-Tag: dnsdist-1.8.0-rc1~211^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25e210038fac0ab21a50f9bfc79c8fb6f9ed3f11;p=thirdparty%2Fpdns.git

make builds pass with -Werror on _my_ system
---

diff --git a/m4/ax_check_sign.m4 b/m4/ax_check_sign.m4
index acc12624ed..a6b5e57785 100644
--- a/m4/ax_check_sign.m4
+++ b/m4/ax_check_sign.m4
@@ -43,7 +43,7 @@ AC_DEFUN([AX_CHECK_SIGN], [
  AC_CACHE_CHECK([whether $1 is signed], ax_cv_decl_${typename}_signed, [
    AC_COMPILE_IFELSE(
      [AC_LANG_PROGRAM([[$4]],
-       [[ int foo @<:@ 1 - 2 * !((($1) -1) < 0) @:>@ ]])],
+       [[ [[maybe_unused]] int foo @<:@ 1 - 2 * !((($1) -1) < 0) @:>@ ]])],
      [ eval "ax_cv_decl_${typename}_signed=\"yes\"" ],
      [ eval "ax_cv_decl_${typename}_signed=\"no\"" ])
  ])
diff --git a/m4/ax_cxx_compile_stdcxx.m4 b/m4/ax_cxx_compile_stdcxx.m4
index 43087b2e68..2aef96dd5b 100644
--- a/m4/ax_cxx_compile_stdcxx.m4
+++ b/m4/ax_cxx_compile_stdcxx.m4
@@ -595,8 +595,7 @@ namespace cxx17
 
   namespace test_constexpr_lambdas
   {
-
-    constexpr int foo = [](){return 42;}();
+    [[maybe_unused]] constexpr int foo = [](){return 42;}();
 
   }