AC_SUBST(LT_VERSION_INFO)
AC_SUBST(LT_RELEASE)
-
dnl Check for the compiler and all the utilities needed for the build.
AC_PROG_CXX
AC_PROG_CXXCPP
AC_PROG_INSTALL
AM_PROG_LIBTOOL
-AM_PROG_LEX
+AC_PROG_LEX
AC_PROG_YACC
-
+AC_PATH_PROG(YACCEXE, $YACC, "")
dnl Switch to C++ language mode for the following libraries and headers.
AC_LANG([C++])
AC_CHECK_HEADERS(unistd.h)
GINAC_HAVE_RUSAGE
GINAC_READLINE
+AC_CHECK_FILE([ginsh/ginsh_parser.h], [],
+ [AS_IF([test -z "$YACCEXE"], [GINAC_WARNING([ginsh will not compile, because yacc/bison is missing.])])])
+AC_CHECK_FILE([ginsh/ginsh_lexer.cc], [],
+ [AS_IF([test x"$LEX" == x":"], [GINAC_WARNING([ginsh will not compile, because lex/flex is missing.])])])
dnl Check for dl library (needed for GiNaC::compile).
GINAC_EXCOMPILER
AC_PATH_PROG(LATEX, latex, "")
AC_PATH_PROG(PDFLATEX, pdflatex, "")
AC_PATH_PROG(MAKEINDEX, makeindex, "")
+AC_PATH_PROG(MAKEINFO, makeinfo, "")
AC_PATH_PROG(DVIPS, dvips, "")
AM_CONDITIONAL(CONFIG_TEX, [test ! \( -z "$LATEX" -o -z $"PDFLATEX" -o -z "$MAKEINDEX" -o -z "$DVIPS" \)])
AC_PATH_PROG(FIG2DEV, fig2dev, "")
AM_CONDITIONAL(CONFIG_FIG2DEV, [test ! -z "$FIG2DEV"])
-
+AS_IF([test -z "$FIG2DEV" -o -z "$MAKEINFO"],
+ [GINAC_WARNING([Documentation may not build, because fig2dev/texinfo is missing.])])
+AS_IF([test -z "$DOXYGEN"],
+ [GINAC_WARNING([Reference manual will not build, because doxygen is missing.])])
+AS_IF([test -z "$LATEX" -o -z "$PDFLATEX" -o -z "$DVIPS"],
+ [GINAC_WARNING([Some documentation formats may not build, because latex/pdflatex/dvips is missing.])])
+
dnl generate boilerplate code for the (new) parser.
dnl Only developers need this tool.
AC_PATH_PROG(AUTOGEN, autogen, "")
+AC_CHECK_FILE([ginac/parser/builtin_fcns.cpp], [],
+ [AS_IF([test -z "$AUTOGEN"], [GINAC_ERROR([Source will not compile, because autogen is missing.])])])
dnl Output makefiles etc.
AC_CONFIG_FILES([
doc/reference/Doxyfooter
])
AC_OUTPUT
+
dnl Display a final warning if there has been a GINAC_ERROR or a GINAC_WARNING
GINAC_CHECK_ERRORS