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by Daniel Holbach
Import upstream version 2.6.22 |
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dnl Like AC_TRY_EVAL but also errors out if the compiler generates |
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dnl _any_ output. Some compilers might issue warnings which we want |
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dnl to catch. |
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AC_DEFUN([AC_TRY_EVAL2], |
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[{ (eval echo configure:__oline__: \"[$]$1\") 1>&AC_FD_CC; dnl |
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(eval [$]$1) 2>&AC_FD_CC; _out=`eval [$]$1 2>&1` && test "x$_out" = x; }]) |
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dnl Like AC_TRY_COMPILE but calls AC_TRY_EVAL2 instead of AC_TRY_EVAL
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AC_DEFUN([AC_TRY_COMPILE2],
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[cat > conftest.$ac_ext <<EOF
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[#]line __oline__ "configure" |
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#include "confdefs.h" |
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[$1]
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int main(void) {
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[$2]
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; return 0; }
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EOF
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if AC_TRY_EVAL2(ac_compile); then
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ifelse([$3], , :, [rm -rf conftest*
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$3])
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else
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echo "configure: failed program was:" >&AC_FD_CC |
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cat conftest.$ac_ext >&AC_FD_CC |
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ifelse([$4], , , [ rm -rf conftest* |
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$4
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])dnl |
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fi
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rm -f conftest*]) |