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configure: add minimal sanity check on user provided CFLAGS and CPPFLAGS

This commit is contained in:
Yang Tse 2012-12-20 17:13:21 +01:00
parent eafccdb315
commit c691037517
1 changed files with 90 additions and 10 deletions
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100
configure.ac
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@ -170,34 +170,114 @@ curl_verbose_msg="enabled (--disable-verbose)"
dnl
dnl LIBS should only specify libraries
dnl
tst_bad_libspec="no"
tst_bad_spec="no"
for word1 in $LIBS; do
case "$word1" in
-l*)
-l* | --library=*)
:
;;
*)
tst_bad_libspec="yes"
tst_bad_spec="yes"
;;
esac
done
if test "$tst_bad_libspec" = "yes"; then
AC_MSG_ERROR([linker flags present in LIBS must be specified via LDFLAGS.])
if test "$tst_bad_spec" = "yes"; then
AC_MSG_WARN([invalid LIBS: $LIBS])
AC_MSG_ERROR([LIBS may only be used to specify libraries (-lname).])
fi
dnl
dnl LDFLAGS should only specify linker flags
dnl
tst_bad_libspec="no"
tst_bad_msg=""
tst_bad_spec="no"
for word1 in $LDFLAGS; do
case "$word1" in
-l*)
tst_bad_libspec="yes"
-D*)
tst_bad_spec="yes"
tst_bad_msg="not macro definitions. Use CPPFLAGS for these."
;;
-U*)
tst_bad_spec="yes"
tst_bad_msg="not macro suppressions. Use CPPFLAGS for these."
;;
-I*)
tst_bad_spec="yes"
tst_bad_msg="not include directories. Use CPPFLAGS for these."
;;
-l* | --library=*)
tst_bad_spec="yes"
tst_bad_msg="not libraries. Use LIBS for these."
;;
esac
done
if test "$tst_bad_libspec" = "yes"; then
AC_MSG_ERROR([libraries present in LDFLAGS must be specified via LIBS.])
if test "$tst_bad_spec" = "yes"; then
AC_MSG_WARN([invalid LDFLAGS: $LDFLAGS])
AC_MSG_ERROR([LDFLAGS may only be used to specify linker flags, $tst_bad_msg])
fi
dnl
dnl CPPFLAGS should only specify C preprocessor flags
dnl
tst_bad_msg=""
tst_bad_spec="no"
for word1 in $CPPFLAGS; do
case "$word1" in
-rpath*)
tst_bad_spec="yes"
tst_bad_msg="not library runtime directories. Use LDFLAGS for these."
;;
-L* | --library-path=*)
tst_bad_spec="yes"
tst_bad_msg="not library directories. Use LDFLAGS for these."
;;
-l* | --library=*)
tst_bad_spec="yes"
tst_bad_msg="not libraries. Use LIBS for these."
;;
esac
done
if test "$tst_bad_spec" = "yes"; then
AC_MSG_WARN([invalid CPPFLAGS: $CPPFLAGS])
AC_MSG_ERROR([CPPFLAGS may only be used to specify C preprocessor flags, $tst_bad_msg])
fi
dnl
dnl CFLAGS should only specify C compiler flags
dnl
tst_bad_msg=""
tst_bad_spec="no"
for word1 in $CFLAGS; do
case "$word1" in
-D*)
tst_bad_spec="yes"
tst_bad_msg="not macro definitions. Use CPPFLAGS for these."
;;
-U*)
tst_bad_spec="yes"
tst_bad_msg="not macro suppressions. Use CPPFLAGS for these."
;;
-I*)
tst_bad_spec="yes"
tst_bad_msg="not include directories. Use CPPFLAGS for these."
;;
-rpath*)
tst_bad_spec="yes"
tst_bad_msg="not library runtime directories. Use LDFLAGS for these."
;;
-L* | --library-path=*)
tst_bad_spec="yes"
tst_bad_msg="not library directories. Use LDFLAGS for these."
;;
-l* | --library=*)
tst_bad_spec="yes"
tst_bad_msg="not libraries. Use LIBS for these."
;;
esac
done
if test "$tst_bad_spec" = "yes"; then
AC_MSG_WARN([invalid CFLAGS: $CFLAGS])
AC_MSG_ERROR([CFLAGS may only be used to specify C compiler flags, $tst_bad_msg])
fi
dnl