| # Check to see how 'make' treats includes. -*- Autoconf -*- |
| |
| # Copyright (C) 2001-2013 Free Software Foundation, Inc. |
| # |
| # This file is free software; the Free Software Foundation |
| # gives unlimited permission to copy and/or distribute it, |
| # with or without modifications, as long as this notice is preserved. |
| |
| # AM_MAKE_INCLUDE() |
| # ----------------- |
| # Check to see how make treats includes. |
| AC_DEFUN([AM_MAKE_INCLUDE], |
| [am_make=${MAKE-make} |
| cat > confinc << 'END' |
| am__doit: |
| @echo this is the am__doit target |
| .PHONY: am__doit |
| END |
| # If we don't find an include directive, just comment out the code. |
| AC_MSG_CHECKING([for style of include used by $am_make]) |
| am__include="#" |
| am__quote= |
| _am_result=none |
| # First try GNU make style include. |
| echo "include confinc" > confmf |
| # Ignore all kinds of additional output from 'make'. |
| case `$am_make -s -f confmf 2> /dev/null` in #( |
| *the\ am__doit\ target*) |
| am__include=include |
| am__quote= |
| _am_result=GNU |
| ;; |
| esac |
| # Now try BSD make style include. |
| if test "$am__include" = "#"; then |
| echo '.include "confinc"' > confmf |
| case `$am_make -s -f confmf 2> /dev/null` in #( |
| *the\ am__doit\ target*) |
| am__include=.include |
| am__quote="\"" |
| _am_result=BSD |
| ;; |
| esac |
| fi |
| AC_SUBST([am__include]) |
| AC_SUBST([am__quote]) |
| AC_MSG_RESULT([$_am_result]) |
| rm -f confinc confmf |
| ]) |
