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26 lines
481 B
Plaintext
26 lines
481 B
Plaintext
dnl
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dnl $Id$
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dnl
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dnl Check whether the gcc accepts -isystem
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dnl
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AC_DEFUN([RTEMS_GCC_ISYSTEM],
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[AC_REQUIRE([RTEMS_PROG_CC])
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AC_CACHE_CHECK(whether $CC accepts -isystem,rtems_cv_gcc_isystem,
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[
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rtems_cv_gcc_isystem=no
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if test x"$GCC" = x"yes"; then
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cat << EOF > conftest.h
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int conftest123();
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EOF
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cat << EOF > conftest.c
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#include <conftest.h>
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int conftest123() {}
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EOF
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if test -z "`${CC} -isystem./ -c conftest.c 2>&1`";then
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rtems_cv_gcc_isystem=yes
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fi
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fi
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rm -f conftest*
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])])
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