X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=acinclude.m4;h=dd7299c08ebea595232594d3c224e39918fe1015;hp=2c743d7b894f6e84d7ca6fdfe4830d0909350155;hb=7579c2252464254878cb301d409991527356d23e;hpb=f473327b4b0236a42a9e0bb8b3604acbfa09cf38 diff --git a/acinclude.m4 b/acinclude.m4 index 2c743d7b..dd7299c0 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -4,114 +4,131 @@ dnl additions' names with AC_ but with GINAC_ in order to steer clear of dnl future trouble. dnl =========================================================================== -dnl Generally, it is a bad idea to put specialized header files for a library -dnl into a generic directory like /usr/local/include/. Instead, one should put -dnl them into a subdirectory. GiNaC does it, NTL does it. Unfortunately, CLN -dnl doesn't do so but some people choose to do it by hand. In these cases we -dnl need to #include , otherwise #include . This macro -dnl tries to be clever and find out the correct way by defining the variable -dnl HAVE_CLN_CLN_H in config.h: -AC_DEFUN(GINAC_CHECK_CLN_H, - [AC_PROVIDE([$0]) - AC_CHECK_HEADERS(cln/cln.h, , - AC_CHECK_HEADERS(cln.h, , - AC_MSG_ERROR([cannot find header for Bruno Haible's CLN]); - ) - ) +dnl Usage: GINAC_RLVERSION +dnl The maintainers of libreadline are complete morons: they don't care a shit +dnl about compatiblilty (which is not so bad by itself) and at the same time +dnl they don't export the version to the preprocessor so we could kluge around +dnl incomatiblities. The only reliable way to figure out the version is by +dnl checking the extern variable rl_library_version at runtime. &#@$%*! +AC_DEFUN([GINAC_LIB_READLINE_VERSION], +[AC_CACHE_CHECK([for version of libreadline], ginac_cv_rlversion, [ +AC_TRY_RUN([ +#include +#include +#include + +int main() +{ + FILE *fd; + fd = fopen("conftest.out", "w"); + fprintf(fd, "%s\n", rl_library_version); + fclose(fd); + return 0; +}], [ +dnl Some non-GNU readline implementations have non-numeric rl_library_version +ginac_cv_rlversion=`sed -e 's/[[^0-9.]]//g' 'conftest.out'`], [ ginac_cv_rlversion='unknown'], [ ginac_cv_rlversion='4.2'])]) +if test -z "$ginac_cv_rlversion"; then + GINAC_WARNING([Unsupported version of libreadline.]) + ginac_cv_rlversion='unknown' +fi +if test "x${ginac_cv_rlversion}" != "xunknown"; then + AC_DEFINE(REALLY_HAVE_LIBREADLINE, ,[Define if GNU libreadline is installed]) + RL_VERSION_MAJOR=`echo ${ginac_cv_rlversion} | sed -e 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'` + AC_DEFINE_UNQUOTED(GINAC_RL_VERSION_MAJOR, $RL_VERSION_MAJOR, [Major version of installed readline library.]) + RL_VERSION_MINOR=`echo ${ginac_cv_rlversion} | sed -e 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'` + AC_DEFINE_UNQUOTED(GINAC_RL_VERSION_MINOR, $RL_VERSION_MINOR, [Minor version of installed readline library.]) +else + GINAC_WARNING([I could not run a test of libreadline (needed for building ginsh).]) +fi ]) -dnl This macro is needed because the generic AC_CHECK_LIB doesn't work because -dnl C++ is more strongly typed than C. Therefore we need to work with the -dnl more fundamental AC_TRY_LINK instead. -AC_DEFUN(GINAC_CHECK_LIBCLN, - [AC_PROVIDE([$0]) - AC_MSG_CHECKING([how to link with libcln]) - saved_LIBS="${LIBS}" - AC_CACHE_VAL(ginac_cv_lib_cln_link, - [LIBS="-lcln" - case "${ac_cv_header_CLN_cln_h}" in - "yes") - AC_TRY_LINK([#include ], - [factorial(1);], - ginac_cv_lib_cln_link="-lcln", - ginac_cv_lib_cln_link="fail") - ;; - *) - AC_TRY_LINK([#include ], - [factorial(1);], - ginac_cv_lib_cln_link="-lcln", - ginac_cv_lib_cln_link="fail") - ;; - esac - ]) - case "${ginac_cv_lib_cln_link}" in -dnl linking worked: - "-lcln") - LIBS="-lcln ${saved_LIBS}" - AC_MSG_RESULT([-lcln]) - GINAC_CHECK_LIBCLN_SANITY - ;; -dnl linking failed: - "fail") - LIBS="${saved_LIBS}" - AC_MSG_RESULT([]) - AC_MSG_ERROR([linking with libcln failed, maybe need to set \$LDFLAGS?]) - ;; -dnl should never ever get here: - *) - LIBS="${saved_LIBS}" - ;; - esac +dnl Usage: GINAC_TERMCAP +dnl libreadline is based on the termcap functions. +dnl Some systems have tgetent(), tgetnum(), tgetstr(), tgetflag(), tputs(), +dnl tgoto() in libc, some have it in libtermcap, some have it in libncurses. +dnl When both libtermcap and libncurses exist, we prefer the latter, because +dnl libtermcap is being phased out. +AC_DEFUN([GINAC_TERMCAP], +[LIBTERMCAP= +case $host_os in +*mingw32*) + ;; dnl no termcap libraries are necessary (need hacked libreadline) +*) +AC_CHECK_FUNCS(tgetent) +if test "x$ac_cv_func_tgetent" = "xyes"; then + : +else + AC_CHECK_LIB(ncurses, tgetent, LIBTERMCAP="-lncurses") + if test -z "$LIBTERMCAP"; then + AC_CHECK_LIB(termcap, tgetent, LIBTERMCAP="-ltermcap") + fi +fi +;; +esac +AC_SUBST(LIBTERMCAP) ]) -dnl Check if the CLN library suits our needs, i.e. if it is new enough, by -dnl trying to run into a little bug which was present till version 1.0.1 and -dnl then removed. -AC_DEFUN(GINAC_CHECK_LIBCLN_SANITY, - [AC_PROVIDE([$0]) - AC_MSG_CHECKING([whether libcln behaves sane]) - AC_CACHE_VAL(ginac_cv_lib_cln_integrity, - [ - case "${ac_cv_header_CLN_cln_h}" in - "yes") - AC_TRY_RUN([#include -int main() { -cl_RA q(3); q = q/2; cl_RA p(3); p = p/2; -if (q+p != 3) return 1; else return 0; -}], - ginac_cv_lib_cln_integrity="sane", - ginac_cv_lib_cln_integrity="insane", - ginac_cv_lib_cln_integrity="guessing sane") - ;; - *) - AC_TRY_RUN([#include -int main() { -cl_RA q(3); q = q/2; cl_RA p(3); p = p/2; -if (q+p != 3) return 1; else return 0; -}], - ginac_cv_lib_cln_integrity="sane", - ginac_cv_lib_cln_integrity="insane", - ginac_cv_lib_cln_integrity="guessing sane") - ;; - esac - ]) - case "${ginac_cv_lib_cln_integrity}" in -dnl exit status was 0: - "sane") - AC_MSG_RESULT([yes]) - ;; -dnl exit status was not 0: - "insane") - AC_MSG_RESULT([no]) - AC_MSG_WARN([maybe version of libcln is older than 1.0.2?]) - ;; -dnl test-program was not run because we are cross-compiling: - "guessing sane") - AC_MSG_RESULT([hopefully]) - ;; -dnl should never ever get here: - *) - AC_MSG_WARN([you found a bug in the configure script!]) - ;; - esac +dnl Usage: GINAC_ERROR(message) +dnl This macro displays the warning "message" and sets the flag ginac_error +dnl to yes. +AC_DEFUN([GINAC_ERROR],[ +ginac_error_txt="$ginac_error_txt +** $1 +" +ginac_error=yes]) + +dnl Usage: GINAC_WARNING(message) +dnl This macro displays the warning "message" and sets the flag ginac_warning +dnl to yes. +AC_DEFUN([GINAC_WARNING],[ +ginac_warning_txt="$ginac_warning_txt +== $1 +" +ginac_warning=yes]) + +dnl Usage: GINAC_CHECK_ERRORS +dnl (must be put at end of configure.in, because it exits on error) +dnl This macro displays a warning message if GINAC_ERROR or GINAC_WARNING +dnl has occured previously. +AC_DEFUN([GINAC_CHECK_ERRORS],[ +if test "x${ginac_error}" = "xyes"; then + echo "**** 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)" + echo "$ginac_error_txt" + if test "x${ginac_warning_txt}" != "x"; then + echo "${ginac_warning_txt}" + fi + if test "x$cache_file" != "x/dev/null"; then + echo "deleting cache ${cache_file}" + rm -f $cache_file + fi + exit 1 +else + if test "x${ginac_warning}" = "xyes"; then + 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)" + echo "$ginac_warning_txt" + fi + echo "Configuration of GiNaC $VERSION done. Now type \"make\"." +fi]) + +AC_DEFUN([GINAC_HAVE_RUSAGE], +[AC_CACHE_CHECK([whether struct rusage is declared in ], +ac_cv_have_rusage, + [AC_TRY_COMPILE([#include + #include ], + [struct rusage resUsage; + getrusage(RUSAGE_SELF, &resUsage); + return 0;], + [ac_cv_have_rusage=yes], + [ac_cv_have_rusage=no]) +]) +CONFIG_RUSAGE="no" +if test "$ac_cv_have_rusage" = yes; then + CONFIG_RUSAGE="yes" + AC_DEFINE(HAVE_RUSAGE,,[define if struct rusage declared in ]) +fi +AC_SUBST(CONFIG_RUSAGE) ])