Unverified Commit deadb234 authored by Marcel Raad's avatar Marcel Raad
Browse files

curl-compilers.m4: disable warning spam with Cygwin's clang 

When building with Cygwin or MinGW, libtool uses a wrapper executable
instead of a wrapper script [1], which is written in C and throws
missing-variable-declarations warnings. Don't enable these warnings on
Cygwin and MinGW in order to avoid warnings for every executable built,
which spams the test suite output when using Cygwin's clang.

[1] https://www.gnu.org/software/libtool/manual/html_node/Wrapper-executables.html

Closes https://github.com/curl/curl/pull/1665
parent af021625

m4/curl-compilers.m4

+9 −1
Original line number Diff line number Diff line
@@ -903,7 +903,15 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [ 
          #

          dnl Only clang 3.2 or later

          if test "$compiler_num" -ge "302"; then

            case $host_os in

            cygwin* | mingw*)

              dnl skip missing-variable-declarations warnings for cygwin and

              dnl mingw because the libtool wrapper executable causes them

              ;;

            *)

              tmp_CFLAGS="$tmp_CFLAGS -Wmissing-variable-declarations"

              ;;

            esac

          fi

          #

          dnl Only clang 3.6 or later