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libcares/m4/cares-compilers.m4  view on Meta::CPAN

        else
          dnl When cross-compiling with a gcc older than 3.0, disable
          dnl some warnings triggered on third party system headers.
          if test "x$cross_compiling" = "xyes"; then
            if test "$compiler_num" -ge "104"; then
              dnl gcc 1.4 or later
              tmp_CFLAGS="$tmp_CFLAGS -Wno-unused -Wno-shadow"
            fi
            if test "$compiler_num" -ge "207"; then
              dnl gcc 2.7 or later
              tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-declarations"
              tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-prototypes"
            fi
          fi
        fi
        ;;
        #
      HP_UX_C)
        #
        if test "$want_warnings" = "yes"; then
          dnl Issue all warnings
          tmp_CFLAGS="$tmp_CFLAGS +w1"
        fi
        ;;
        #
      IBM_C)
        #
        dnl Placeholder
        tmp_CFLAGS="$tmp_CFLAGS"
        ;;
        #
      INTEL_UNIX_C)
        #
        if test "$want_warnings" = "yes"; then
          if test "$compiler_num" -gt "600"; then
            dnl Show errors, warnings, and remarks
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wall -w2"
            dnl Perform extra compile-time code checking
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wcheck"
            dnl Warn on nested comments
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wcomment"
            dnl Show warnings relative to deprecated features
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wdeprecated"
            dnl Enable warnings for missing prototypes
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wmissing-prototypes"
            dnl Enable warnings for 64-bit portability issues
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wp64"
            dnl Enable warnings for questionable pointer arithmetic
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wpointer-arith"
            dnl Check for function return typw issues
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wreturn-type"
            dnl Warn on variable declarations hiding a previous one
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wshadow"
            dnl Warn when a variable is used before initialized
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wuninitialized"
            dnl Warn if a declared function is not used
            tmp_CPPFLAGS="$tmp_CPPFLAGS -Wunused-function"
          fi
        fi
        dnl Disable using EBP register in optimizations
        tmp_CFLAGS="$tmp_CFLAGS -fno-omit-frame-pointer"
        dnl Disable use of ANSI C aliasing rules in optimizations
        tmp_CFLAGS="$tmp_CFLAGS -fno-strict-aliasing"
        dnl Value-safe optimizations on floating-point data
        tmp_CFLAGS="$tmp_CFLAGS -fp-model precise"
        dnl Only icc 10.0 or later
        if test "$compiler_num" -ge "1000"; then
          dnl Disable vectorizer diagnostic information
          tmp_CFLAGS="$tmp_CFLAGS -vec-report0"
        fi
        ;;
        #
      INTEL_WINDOWS_C)
        #
        dnl Placeholder
        tmp_CFLAGS="$tmp_CFLAGS"
        ;;
        #
      LCC)
        #
        if test "$want_warnings" = "yes"; then
          dnl Highest warning level is double -A, next is single -A.
          dnl Due to the big number of warnings these trigger on third
          dnl party header files it is impractical for us to use any of
          dnl them here. If you want them simply define it in CPPFLAGS.
          tmp_CFLAGS="$tmp_CFLAGS"
        fi
        ;;
        #
      SGI_MIPS_C)
        #
        if test "$want_warnings" = "yes"; then
          dnl Perform stricter semantic and lint-like checks
          tmp_CFLAGS="$tmp_CFLAGS -fullwarn"
        fi
        ;;
        #
      SGI_MIPSPRO_C)
        #
        if test "$want_warnings" = "yes"; then
          dnl Perform stricter semantic and lint-like checks
          tmp_CFLAGS="$tmp_CFLAGS -fullwarn"
          dnl Disable some remarks
          dnl #1209: controlling expression is constant
          tmp_CFLAGS="$tmp_CFLAGS -woff 1209"
        fi
        ;;
        #
      SUNPRO_C)
        #
        if test "$want_warnings" = "yes"; then
          dnl Perform stricter semantic and lint-like checks
          tmp_CFLAGS="$tmp_CFLAGS -v"
        fi
        ;;
        #
      TINY_C)
        #
        if test "$want_warnings" = "yes"; then
          dnl Activate all warnings
          tmp_CFLAGS="$tmp_CFLAGS -Wall"