Commit 49c1a20d authored by Ben Gamari's avatar Ben Gamari Committed by Ben Gamari

configure: Catch case where LLVM tools can't be found

Previously we didn't specify the prog-not-found value passed to
AC_CHECK_TOOLS.  Reported by @snowleopard in
https://github.com/snowleopard/hadrian/issues/415.

Test Plan: validate

Reviewers: austin, hvr

Subscribers: rwbarton, thomie, snowleopard, erikd

Differential Revision: https://phabricator.haskell.org/D3992
parent 9738e8b6
......@@ -2035,7 +2035,7 @@ AC_DEFUN([XCODE_VERSION],[
#
AC_DEFUN([FIND_LLVM_PROG],[
# Test for program with and without version name.
AC_CHECK_TOOLS([$1], [$2-$3 $2])
AC_CHECK_TOOLS([$1], [$2-$3 $2], [:])
if test "$$1" != ":"; then
AC_MSG_CHECKING([$$1 is version $3])
if test `$$1 --version | grep -c "version $3"` -gt 0 ; then
......@@ -2044,6 +2044,8 @@ AC_DEFUN([FIND_LLVM_PROG],[
AC_MSG_RESULT(no)
$1=""
fi
else
$1=""
fi
])
......
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