tests: avoid one tricky use of "make -e"

Which was causing a spurious failure on FreeBSD.  Not particularly
surprising, given how brittle "make -e" is in general ...

* t/cxx-lt-demo.sh: Instead of forcing $(CC) to be 'false' by
exporting "CC=false" in the environment and then passing the '-e'
option to make, do so by passing "CC=false" on the make command
line, both directly and using AM_MAKEFLAGS.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --git a/t/cxx-lt-demo.sh b/t/cxx-lt-demo.sh
index 8afc974..b778725 100755 (executable)
--- a/t/cxx-lt-demo.sh
+++ b/t/cxx-lt-demo.sh
@@ -122,7 +122,9 @@ std::string target (void)
 END
 
 ./configure
-CC=false $MAKE -e
+# Creative quoting and redundant use of eval to avoid spurious
+# 'maintainer-check' failures.
+eval \$'MAKE CC=false AM_MAKEFLAGS=CC=false'
 ls -l . src lib # For debugging.
 $MAKE test-objs
 VERBOSE=yes $MAKE check-TESTS