configure: add internal sanity check (warn only) on vars for makefiles

squeeze SUPPORT_FEATURES

squeeze SUPPORT_PROTOCOLS

dnl

dnl Some sanity checks for LIBS, LDFLAGS, CPPFLAGS and CFLAGS values that

dnl configure is going to feed into makefiles generated by automake. Due

dnl to automake placement and usage of these variables we have to follow

dnl its rules or we may get funny results later on at make-time.

dnl

dnl

dnl LIBS should only specify libraries

dnl

AC_MSG_NOTICE([using LIBS: $LIBS])

tst_bad_spec="no"

for word1 in $LIBS; do

  case "$word1" in

    -l* | --library=*)

      :

      ;;

    *)

      tst_bad_spec="yes"

      ;;

  esac

done

if test "$tst_bad_spec" = "yes"; then

  AC_MSG_WARN([oops, LIBS should only specify libraries.])

fi

dnl

dnl LDFLAGS should only specify linker flags

dnl

AC_MSG_NOTICE([using LDFLAGS: $LDFLAGS])

tst_bad_msg="oops, LDFLAGS should only specify linker flags, not"

for word1 in $LDFLAGS; do

  case "$word1" in

    -D*)

      AC_MSG_WARN([$tst_bad_msg macro definitions. Use CPPFLAGS for: $word1])

      ;;

    -U*)

      AC_MSG_WARN([$tst_bad_msg macro suppressions. Use CPPFLAGS for: $word1])

      ;;

    -I*)

      AC_MSG_WARN([$tst_bad_msg include directories. Use CPPFLAGS for: $word1])

      ;;

    -l* | --library=*)

      AC_MSG_WARN([$tst_bad_msg libraries. Use LIBS for: $word1])

      ;;

  esac

done

dnl

dnl CPPFLAGS should only specify C preprocessor flags

dnl

AC_MSG_NOTICE([using CPPFLAGS: $CPPFLAGS])

tst_bad_msg="oops, CPPFLAGS should only specify C preprocessor flags, not"

for word1 in $CPPFLAGS; do

  case "$word1" in

    -rpath*)

      AC_MSG_WARN([$tst_bad_msg library runtime directories. Use LDFLAGS for: $word1])

      ;;

    -L* | --library-path=*)

      AC_MSG_WARN([$tst_bad_msg library directories. Use LDFLAGS for: $word1])

      ;;

    -l* | --library=*)

      AC_MSG_WARN([$tst_bad_msg libraries. Use LIBS for: $word1])

      ;;

  esac

done

dnl

dnl CFLAGS should only specify C compiler flags

dnl

AC_MSG_NOTICE([using CFLAGS: $CFLAGS])

tst_bad_msg="oops, CFLAGS should only specify C compiler flags, not"

for word1 in $CFLAGS; do

  case "$word1" in

    -D*)

      AC_MSG_WARN([$tst_bad_msg macro definitions. Use CPPFLAGS for: $word1])

      ;;

    -U*)

      AC_MSG_WARN([$tst_bad_msg macro suppressions. Use CPPFLAGS for: $word1])

      ;;

    -I*)

      AC_MSG_WARN([$tst_bad_msg include directories. Use CPPFLAGS for: $word1])

      ;;

    -rpath*)

      AC_MSG_WARN([$tst_bad_msg library runtime directories. Use LDFLAGS for: $word1])

      ;;

    -L* | --library-path=*)

      AC_MSG_WARN([$tst_bad_msg library directories. Use LDFLAGS for: $word1])

      ;;

    -l* | --library=*)

      AC_MSG_WARN([$tst_bad_msg libraries. Use LIBS for: $word1])

      ;;

  esac

done

if test "x$want_curldebug_assumed" = "xyes" &&

  test "x$want_curldebug" = "xyes" && test "x$USE_ARES" = "x1"; then

  ac_configure_args="$ac_configure_args --enable-curldebug"