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

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This commit is contained in:
Yang Tse 2012-12-21 17:26:19 +01:00
parent c30c557e4d
commit 0969045b6e
1 changed files with 95 additions and 0 deletions
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95
configure.ac
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@ -3614,6 +3614,101 @@ squeeze CURL_NETWORK_AND_TIME_LIBS
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"