diff options
| -rw-r--r-- | configure.ac | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index a3b0ebd6cf9..8c90b414679 100644 --- a/configure.ac +++ b/configure.ac @@ -278,8 +278,20 @@ if test "x$GCC" = xyes; then # - non-Linux/Posix OpenGL portions needs to build on MSVC 2013 (which # supports most of C99) # - the rest has no compiler compiler restrictions - MSVC2013_COMPAT_CFLAGS="-Werror=vla -Werror=pointer-arith" - MSVC2013_COMPAT_CXXFLAGS="-Werror=vla -Werror=pointer-arith" + MSVC2013_COMPAT_CFLAGS="-Werror=pointer-arith" + MSVC2013_COMPAT_CXXFLAGS="-Werror=pointer-arith" + + # Enable -Werror=vla if compiler supports it + save_CFLAGS="$CFLAGS" + AC_MSG_CHECKING([whether $CC supports -Werror=vla]) + CFLAGS="$CFLAGS -Werror=vla" + AC_LINK_IFELSE([AC_LANG_PROGRAM()], + [MSVC2013_COMPAT_CFLAGS="$MSVC2013_COMPAT_CFLAGS -Werror=vla"; + MSVC2013_COMPAT_CXXFLAGS="$MSVC2013_COMPAT_CXXFLAGS -Werror=vla"; + AC_MSG_RESULT([yes])], + AC_MSG_RESULT([no])); + CFLAGS="$save_CFLAGS" + MSVC2008_COMPAT_CFLAGS="$MSVC2013_COMPAT_CFLAGS -Werror=declaration-after-statement" MSVC2008_COMPAT_CXXFLAGS="$MSVC2013_COMPAT_CXXFLAGS" fi |