mirror of https://github.com/BOINC/boinc.git
57 lines
1.4 KiB
Plaintext
57 lines
1.4 KiB
Plaintext
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AC_DEFUN([SAH_DEFAULT_BITNESS],[
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if test -z "${COMPILER_MODEL_BITS}"
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then
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AC_MSG_CHECKING(default bitness of compiler)
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echo "int main() { return 0; }" >conftest.c
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${CC} ${CFLAGS} -c conftest.c >&5
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COMPILER_MODEL_BITS=32
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if test -f conftest.${OBJEXT} ; then
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if test -n "`file conftest.${OBJEXT} | grep -i 64-bit`"
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then
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COMPILER_MODEL_BITS=64
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else
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if test -n "`file conftest.${OBJEXT} | grep -i 16-bit`"
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then
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COMPILER_MODEL_BITS=16
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fi
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fi
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fi
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/bin/rm conftest.c
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AC_MSG_RESULT($COMPILER_MODEL_BITS)
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fi
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])
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AC_DEFUN([SAH_SELECT_BITNESS],[
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AC_LANG_PUSH(C)
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SAH_DEFAULT_BITNESS
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AC_MSG_CHECKING(Selecting $1 bit model)
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echo "int main() { return 0; }" >conftest.$ac_ext
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if test "$1" != "${COMPILER_MODEL_BITS}"
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then
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${CC} ${CFLAGS} ${CPPFLAGS} -m$1 -c conftest.$ac_ext >&5
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if test -f conftest.${OBJEXT} ; then
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if test -n "`file conftest.${OBJEXT} | grep -i $1-bit`"
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then
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CFLAGS="${CFLAGS} -m$1"
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AC_MSG_RESULT(-m$1)
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COMPILER_MODEL_BITS=$1
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fi
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AC_MSG_RESULT(failed)
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fi
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else
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AC_MSG_RESULT(ok)
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fi
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AC_LANG_POP(C)
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])
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AC_DEFUN([SAH_OPTION_BITNESS],[
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AC_ARG_ENABLE(bitness,
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AC_HELP_STRING([--enable-bitness=(32,64)],
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[enable 32 or 64 bit object/executable files]
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),
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[SAH_SELECT_BITNESS(${enableval})],
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[SAH_DEFAULT_BITNESS]
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)
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])
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