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
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 "$FIG2DEV"])
+AS_IF([test "x$LEX" = "x:" -a ! -f $srcdir/ginsh/ginsh_lexer.cc],
+ [GINAC_WARNING([ginsh will not compile, because lex/flex is missing])])
+AS_IF([test -z "$YACCEXE" -a ! -f $srcdir/ginsh/ginsh_parser.h],
+ [GINAC_WARNING([ginsh will not compile, because yacc/bison is missing])])
AS_IF([test -z "$FIG2DEV" -o -z "$MAKEINFO"],
[GINAC_WARNING([Documentation may not build, because fig2dev/texinfo is missing.])])
AS_IF([test -z "$DOXYGEN"],