Fix the actual cmake dist problem, missing macros.

This reverts commit 36adb31ee9 which was
the wrong approach.

configure.ac

@@ -74,8 +74,8 @@ AX_CXX_COMPILE_STDCXX_11(ext)
 # Ensure the C compiler supports C11
 AX_CHECK_COMPILE_FLAG([-std=gnu11],
                       [AX_APPEND_FLAG([-std=gnu11])],
-                      AC_MSG_ERROR([No C++11 Support.])
-                      )
+                      [AC_MSG_ERROR([The compiler doesn't support the C11 (gnu11) standard.])
+                      ])
 
 AC_SUBST(GNUCASH_MAJOR_VERSION)
 AC_SUBST(GNUCASH_MINOR_VERSION)
@@ -144,7 +144,6 @@ AM_CONDITIONAL([CLANG], [test "x$ac_cv_CLANG" = "xyes"])
 ###--------------------------------------------------------
 ### Begin C++ dependencies
 ###--------------------------------------------------------
-AC_PROG_CXX
 PKG_CHECK_MODULES(ICU4C, icu-uc, [ac_cv_ICU4C=yes], [ac_cv_ICU4C=no])
 PKG_CHECK_MODULES(ICU4C_I18N, icu-i18n, [ac_cv_ICU4C=yes], [ac_cv_ICU4C=no])
 if test x$ac_cv_ICU4C != xyes; then
@@ -940,12 +939,14 @@ fi
 if test "x$ac_cv_have_gtest_libs" = xyes; then
    ac_cv_gtest_libs="-lgtest -lgtest_main"
 else
+dnl Google test requires pthreads and this seems the easiest way to check.
     AX_PTHREAD([
     ac_cv_gtest_libs="\$(top_builddir)/common/test-core/libgtest.a $PTHREAD_CFLAGS"
-    ],
+    ],[
     AC_MSG_ERROR(
       [GTest requires pthreads, but this wasn't found.])
-    )
+      dnl Google test requires pthreads and this seems the easiest way to check.
+    ])
 fi
 
 AC_SUBST([GTEST_LIBS], [$ac_cv_gtest_libs])

macros/CMakeLists.txt

@@ -1,3 +1,6 @@
 
-SET_DIST_LIST(macros_DIST ax_pkg_swig.m4 ax_python_devel.m4 ax_swig_python.m4 binreloc.m4
-                           compiler-flags.m4 CMakeLists.txt legacy_macros.m4 pkg.m4)
+SET_DIST_LIST(macros_DIST ax_append_flag.m4 ax_check_compile_flag.m4
+  ax_cxx_compile_stdcxx_11.m4 ax_pkg_swig.m4 ax_python_devel.m4
+  ax_swig_python.m4 binreloc.m4 compiler-flags.m4 CMakeLists.txt
+  legacy_macros.m4 m4_ax_boost_base.m4 m4_ax_check_compile_flag.m4
+  m4_ax_pthread.m4 pkg.m4)