Fix for old autotools on COSMA

m4/ax_prog_doxygen.m4

@@ -526,7 +526,7 @@ if test $DX_FLAG_ps -eq 1 -o $DX_FLAG_pdf -eq 1; then
 ## ------------------------------------------------- ##
 
 DX_V_LATEX = \$(_DX_v_LATEX_\$(V))
-_DX_v_LATEX_ = \$(_DX_v_LATEX_\$(AM_DEFAULT_VERBOSITY))
+_DX_v_LATEX_ = \$(_DX_v_LATEX_1))
 _DX_v_LATEX_0 = @echo \"  LATEX \" \$[]][[]@;
 
 DX_CLEAN_LATEX = \$(DX_DOCDIR)/latex[]dnl
@@ -552,7 +552,7 @@ ${DX_SNIPPET_ps}\
 ${DX_SNIPPET_pdf}\
 ${DX_SNIPPET_latex}\
 DX_V_DXGEN = \$(_DX_v_DXGEN_\$(V))
-_DX_v_DXGEN_ = \$(_DX_v_DXGEN_\$(AM_DEFAULT_VERBOSITY))
+_DX_v_DXGEN_ = \$(_DX_v_DXGEN_1)
 _DX_v_DXGEN_0 = @echo \"  DXGEN \" \$<;
 
 .PHONY: doxygen-run doxygen-doc \$(DX_PS_GOAL) \$(DX_PDF_GOAL)