configure.ac: always check for C++ compiler

Currently, only the sidplay decoder plugin requires C++, and in all other cases, MPD could build well without a C++ compiler. Unfortunately, autoconf/automake are confused when we have a conditional AC_PROG_CXX check. We could add lots of workarounds for individual problems, but let's just always require a C++ compiler, and forget about this autotools limitation.

configure.ac: always check for C++ compiler
f6c8dd49 · Max Kellermann · 321eb107 · f6c8dd49
Commit f6c8dd49 authored Feb 12, 2009 by Max Kellermann
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configure.ac configure.ac +2 -5

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--- a/configure.ac
+++ b/configure.ac
@@ -13,6 +13,8 @@ dnl programs
 dnl

 AC_PROG_CC_C99
+AC_PROG_CXX
+
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET
 PKG_PROG_PKG_CONFIG
@@ -1020,17 +1022,12 @@ fi
 AM_CONDITIONAL(HAVE_FFMPEG, test x$enable_ffmpeg = xyes)

 if test x$enable_sidplay = xyes; then
-	# libsidplay2 exposes a C++ interface
-	AC_PROG_CXX
-
 	# we have no test yet.. we're not using pkg-config here
 	# because libsidplay2's .pc file requires libtool
 	AC_SUBST(SIDPLAY_LIBS,"-lsidplay2 -lresid-builder")
 	AC_SUBST(SIDPLAY_CFLAGS,)

 	AC_DEFINE(ENABLE_SIDPLAY, 1, [Define for libsidplay2 support])
-else
-	AM_CONDITIONAL(am__fastdepCXX, false)
 fi

 AM_CONDITIONAL(ENABLE_SIDPLAY, test x$enable_sidplay = xyes)