| 1 | dnl Like AC_TRY_EVAL but also errors out if the compiler generates
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| 2 | dnl _any_ output. Some compilers might issue warnings which we want
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| 3 | dnl to catch.
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| 4 | AC_DEFUN([AC_TRY_EVAL2],
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| 5 | [{ (eval echo configure:__oline__: \"[$]$1\") 1>&AS_MESSAGE_LOG_FD; dnl
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| 6 | (eval [$]$1) 2>&AS_MESSAGE_LOG_FD; _out=`eval [$]$1 2>&1` && test "x$_out" = x; }])
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| 7 |
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| 8 | dnl Like AC_TRY_COMPILE but calls AC_TRY_EVAL2 instead of AC_TRY_EVAL
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| 9 | AC_DEFUN([AC_TRY_COMPILE2],
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| 10 | [cat > conftest.$ac_ext <<EOF
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| 11 | [#]line __oline__ "configure"
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| 12 | #include "confdefs.h"
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| 13 | [$1]
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| 14 | int main(void) {
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| 15 | [$2]
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| 16 | ; return 0; }
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| 17 | EOF
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| 18 | if AC_TRY_EVAL2(ac_compile); then
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| 19 | ifelse([$3], , :, [rm -rf conftest*
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| 20 | $3])
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| 21 | else
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| 22 | echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
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| 23 | cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
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| 24 | ifelse([$4], , , [ rm -rf conftest*
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| 25 | $4
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| 26 | ])dnl
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| 27 | fi
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| 28 | rm -f conftest*])
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