Fix detection of cppunit (#1695)

On MacOS / Homebrew, libcppunit is not part of the system path.
pkg-config will report it; use it.

This change also ensures squid honours the promise made
in configure's help text to let administrators specify a
LIBCPPUNIT_LIBS environment variable to
override automatic detection

diff --git a/configure.ac b/configure.ac
index 0028b9b0bfc20490732e59c41b9322435f59be8e..9250d73dc034ae7261af3afb2f36bd79cbfdab6a 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -2172,7 +2172,6 @@ AC_MSG_NOTICE([X-Accelerator-Vary support enabled: $enable_x_accelerator_vary])
 
 SQUID_AUTO_LIB(cppunit,[cppunit test framework],[LIBCPPUNIT])
 SQUID_CHECK_LIB_WORKS(cppunit,[
-  LIBCPPUNIT_LIBS="$LIBCPPUNIT_PATH -lcppunit"
   PKG_CHECK_MODULES([LIBCPPUNIT],[cppunit],[
     squid_cv_cppunit_version="`pkg-config --modversion cppunit`"
     AC_MSG_NOTICE([using system installed cppunit version $squid_cv_cppunit_version])