./configure now gives more information/warnings about missing utilities.

diff --git a/acinclude.m4 b/acinclude.m4
index 06ac032ad48b0563c91c798a67e756c8a936958a..1e53fa45c41f2bbe6eb0d572ebd1d452220b4c49 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -45,7 +45,7 @@ AC_REQUIRE([GINAC_TERMCAP])
 GINSH_LIBS=""
 AC_CHECK_HEADERS(readline/readline.h readline/history.h)
 if test "x${ac_cv_header_readline_readline_h}" != "xyes" -o "x${ac_cv_header_readline_history_h}" != "xyes"; then
-       GINAC_WARNING([readline headers could not be found.])
+       GINAC_WARNING([ginsh will not compile, because readline headers could not be found.])
 else
        AC_CACHE_CHECK([for version of libreadline], [ginac_cv_rl_supported], [
                ginac_cv_rl_supported="no"
@@ -57,13 +57,13 @@ else
                        #endif]])],
                        [ginac_cv_rl_supported="yes"])])
        if test "x${ginac_cv_rl_supported}" != "xyes"; then
-               GINAC_WARNING([Unsupported version of readline (<= 4.2 or non-GNU).])
+               GINAC_WARNING([ginsh will not compile, because of an unsupported version of readline (<= 4.2 or non-GNU).])
        else
                save_LIBS="$LIBS"
                LIBS="$LIBTERMCAP $LIBS"
                AC_CHECK_LIB(readline, readline)
                if test "x${ac_cv_lib_readline_readline}" != "xyes"; then
-                       GINAC_WARNING([libreadline could not be found.])
+                       GINAC_WARNING([ginsh will not compile, because libreadline could not be found.])
                fi
                GINSH_LIBS="$LIBS"
                LIBS="$save_LIBS"
@@ -121,6 +121,7 @@ dnl This macro displays a warning message if GINAC_ERROR or GINAC_WARNING
 dnl has occured previously.
 AC_DEFUN([GINAC_CHECK_ERRORS],[
 if test "x${ginac_error}" = "xyes"; then
+       echo
     echo "**** The following problems have been detected by configure."
     echo "**** Please check the messages below before running \"make\"."
     echo "**** (see the section 'Common Problems' in the INSTALL file)"
@@ -135,6 +136,7 @@ if test "x${ginac_error}" = "xyes"; then
     exit 1
 else 
     if test "x${ginac_warning}" = "xyes"; then
+               echo
         echo "=== The following minor problems have been detected by configure."
         echo "=== Please check the messages below before running \"make\"."
         echo "=== (see the section 'Common Problems' in the INSTALL file)"

diff --git a/configure.ac b/configure.ac
index 602a844847ef6762644c86d38a7689af54c68a93..fa8ab0e1542778400c6595d164ced5a5771a25e5 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -69,15 +69,14 @@ LT_RELEASE="1.5"
 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++])
@@ -104,6 +103,10 @@ dnl Check for stuff needed for building the GiNaC interactive shell (ginsh).
 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
@@ -117,14 +120,23 @@ AM_CONDITIONAL(CONFIG_DOXYGEN, [test ! -z "$DOXYGEN"])
 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([
@@ -148,5 +160,6 @@ doc/reference/DoxyfilePDF
 doc/reference/Doxyfooter
 ])
 AC_OUTPUT
+
 dnl Display a final warning if there has been a GINAC_ERROR or a GINAC_WARNING
 GINAC_CHECK_ERRORS