transmission: fix uTP enabled build with ccache

transmission: fix incorrect check of CXX when ccache is enabled

When ccache is enabled, the configure script is called with

CXX="/path/to/ccache /path/to/cxx". The AC_PROG_CXX correctly deals with

this, but the transmission-specific extra checks on CXX do not. It uses

AC_CHECK_PROG, which takes the first word of CXX (ccache) only.

This patch removes the seemingly unneeded extra checks, and additionally

replaces HAVE_CXX=yes/no with a direct check on CXX, as it is only used in

one place.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>

Upstream-status: submitted: https://trac.transmissionbt.com/ticket/5612

---

diff --git a/configure.ac b/configure.ac

--- a/configure.ac

+++ b/configure.ac

@@ -69,15 +69,6 @@ AC_SUBST(LIBAPPINDICATOR_MINIMUM)

 AC_PROG_CC

 AC_PROG_CXX

-if test "x$CXX" != "x"; then # CXX is set...

-  if test -f "$CXX"; then # maybe it's an absolute path passed in env variables...

-    AC_MSG_CHECKING([for $CXX])

-    HAVE_CXX="yes"

-    AC_MSG_RESULT([$HAVE_CXX])

-  else

-    AC_CHECK_PROG([HAVE_CXX],[$CXX],[yes],[no])

-  fi

-fi

 AC_C_INLINE

 if test "x$GCC" = "xyes" ; then

@@ -216,7 +207,7 @@ AC_CHECK_LIB([rt],

 AC_MSG_CHECKING([µTP])

 build_utp="no"

-if test "x$HAVE_CXX" = "xyes" ; then

+if test "x$CXX" != "x" ; then

     have_utp="yes"

 else

     have_utp="no"

	libevent \

	openssl \

	zlib

TRANSMISSION_AUTORECONF = YES

TRANSMISSION_CONF_OPT = \

	--disable-libnotify \