1 dnl ===========================================================================
2 dnl Additional macros used to configure GiNaC. We don't start our own
3 dnl additions' names with AC_ but with GINAC_ in order to steer clear of
5 dnl ===========================================================================
7 dnl Usage: GINAC_RLVERSION
8 dnl The maintainers of libreadline are complete morons: they don't care a shit
9 dnl about compatiblilty (which is not so bad by itself) and at the same time
10 dnl they don't export the version to the preprocessor so we could kluge around
11 dnl incomatiblities. The only reliable way to figure out the version is by
12 dnl checking the extern variable rl_library_version at runtime. &#@$%*!
13 AC_DEFUN([GINAC_LIB_READLINE_VERSION],
14 [AC_CACHE_CHECK([for version of libreadline], ginac_cv_rlversion, [
17 #include <sys/types.h>
18 #include <readline/readline.h>
23 fd = fopen("conftest.out", "w");
24 fprintf(fd, "%s\n", rl_library_version);
28 dnl Some non-GNU readline implementations have non-numeric rl_library_version
29 ginac_cv_rlversion=`sed -e 's/[[^0-9.]]//g' 'conftest.out'`], [ ginac_cv_rlversion='unknown'], [ ginac_cv_rlversion='4.2'])])
30 if test -z "$ginac_cv_rlversion"; then
31 GINAC_WARNING([Unsupported version of libreadline.])
32 ginac_cv_rlversion='unknown'
34 if test "x${ginac_cv_rlversion}" != "xunknown"; then
35 AC_DEFINE(REALLY_HAVE_LIBREADLINE, ,[Define if GNU libreadline is installed])
36 RL_VERSION_MAJOR=`echo ${ginac_cv_rlversion} | sed -e 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
37 AC_DEFINE_UNQUOTED(GINAC_RL_VERSION_MAJOR, $RL_VERSION_MAJOR, [Major version of installed readline library.])
38 RL_VERSION_MINOR=`echo ${ginac_cv_rlversion} | sed -e 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
39 AC_DEFINE_UNQUOTED(GINAC_RL_VERSION_MINOR, $RL_VERSION_MINOR, [Minor version of installed readline library.])
41 GINAC_WARNING([I could not run a test of libreadline (needed for building ginsh).])
45 dnl Usage: GINAC_TERMCAP
46 dnl libreadline is based on the termcap functions.
47 dnl Some systems have tgetent(), tgetnum(), tgetstr(), tgetflag(), tputs(),
48 dnl tgoto() in libc, some have it in libtermcap, some have it in libncurses.
49 dnl When both libtermcap and libncurses exist, we prefer the latter, because
50 dnl libtermcap is being phased out.
51 AC_DEFUN([GINAC_TERMCAP],
55 ;; dnl no termcap libraries are necessary (need hacked libreadline)
57 AC_CHECK_FUNCS(tgetent)
58 if test "x$ac_cv_func_tgetent" = "xyes"; then
61 AC_CHECK_LIB(ncurses, tgetent, LIBTERMCAP="-lncurses")
62 if test -z "$LIBTERMCAP"; then
63 AC_CHECK_LIB(termcap, tgetent, LIBTERMCAP="-ltermcap")
71 dnl Usage: GINAC_ERROR(message)
72 dnl This macro displays the warning "message" and sets the flag ginac_error
74 AC_DEFUN([GINAC_ERROR],[
75 ginac_error_txt="$ginac_error_txt
80 dnl Usage: GINAC_WARNING(message)
81 dnl This macro displays the warning "message" and sets the flag ginac_warning
83 AC_DEFUN([GINAC_WARNING],[
84 ginac_warning_txt="$ginac_warning_txt
89 dnl Usage: GINAC_CHECK_ERRORS
90 dnl (must be put at end of configure.in, because it exits on error)
91 dnl This macro displays a warning message if GINAC_ERROR or GINAC_WARNING
92 dnl has occured previously.
93 AC_DEFUN([GINAC_CHECK_ERRORS],[
94 if test "x${ginac_error}" = "xyes"; then
95 echo "**** The following problems have been detected by configure."
96 echo "**** Please check the messages below before running \"make\"."
97 echo "**** (see the section 'Common Problems' in the INSTALL file)"
98 echo "$ginac_error_txt"
99 if test "x${ginac_warning_txt}" != "x"; then
100 echo "${ginac_warning_txt}"
102 if test "x$cache_file" != "x/dev/null"; then
103 echo "deleting cache ${cache_file}"
108 if test "x${ginac_warning}" = "xyes"; then
109 echo "=== The following minor problems have been detected by configure."
110 echo "=== Please check the messages below before running \"make\"."
111 echo "=== (see the section 'Common Problems' in the INSTALL file)"
112 echo "$ginac_warning_txt"
114 echo "Configuration of GiNaC $VERSION done. Now type \"make\"."
117 AC_DEFUN([GINAC_HAVE_RUSAGE],
118 [AC_CACHE_CHECK([whether struct rusage is declared in <sys/resource.h>],
120 [AC_TRY_COMPILE([#include <sys/times.h>
121 #include <sys/resource.h>],
122 [struct rusage resUsage;
123 getrusage(RUSAGE_SELF, &resUsage);
125 [ac_cv_have_rusage=yes],
126 [ac_cv_have_rusage=no])
129 if test "$ac_cv_have_rusage" = yes; then
131 AC_DEFINE(HAVE_RUSAGE,,[define if struct rusage declared in <sys/resource.h>])
133 AC_SUBST(CONFIG_RUSAGE)