forked from Imagelibrary/rtems
823938fa4c
<corsepiu@faw.uni-ulm.de> that adds a piece of the *-rc-20000705-? series that was not added to CVS accidentally.
38 lines
957 B
Plaintext
38 lines
957 B
Plaintext
dnl $Id$
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AC_DEFUN(RTEMS_CHECK_NEWLIB,
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[dnl
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AC_REQUIRE([RTEMS_PROG_CC_FOR_TARGET])dnl
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AC_REQUIRE([RTEMS_CANONICALIZE_TOOLS])dnl
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AC_CACHE_CHECK([for newlib],
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rtems_cv_use_newlib,
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[
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rtems_save_CC=$CC
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CC=$CC_FOR_TARGET
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dnl some versions of newlib provide not_required_by_rtems
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AC_TRY_LINK(
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[extern void not_required_by_rtems() ;],
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[not_required_by_rtems()],
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rtems_cv_use_newlib="yes")
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dnl some versions of newlib provide rtems_provides_crt0()
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if test -z "$rtems_cv_use_newlib"; then
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AC_TRY_LINK(
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[extern void rtems_provides_crt0() ;],
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[rtems_provides_crt0()],
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rtems_cv_use_newlib="yes",
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rtems_cv_use_newlib="no")
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fi
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CC=$rtems_save_CC])
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RTEMS_USE_NEWLIB="$rtems_cv_use_newlib"
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AC_SUBST(RTEMS_USE_NEWLIB)
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if test x"${RTEMS_USE_NEWLIB}" = x"yes";
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then
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AC_DEFINE_UNQUOTED(RTEMS_NEWLIB,1,[if using newlib])
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AC_DEFINE_UNQUOTED(MALLOC_PROVIDED,1,[if malloc is provided])
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fi
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])
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