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Diffstat (limited to 'm4m/gp-check-popt.m4')
| -rw-r--r-- | m4m/gp-check-popt.m4 | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/m4m/gp-check-popt.m4 b/m4m/gp-check-popt.m4 new file mode 100644 index 0000000..585bf21 --- /dev/null +++ b/m4m/gp-check-popt.m4 @@ -0,0 +1,180 @@ +dnl @synopsis GP_CHECK_POPT(FLAG) +dnl +dnl Check whether libpopt is available. +dnl FLAG must be one of +dnl "mandatory" +dnl "default-enabled" +dnl "default-disabled" +dnl +AC_DEFUN([GP_CHECK_POPT],[ +# +# [GP_CHECK_POPT] +# +AC_REQUIRE([GP_CONFIG_MSG])dnl +m4_if([$1],[mandatory], [_GP_CHECK_POPT([mandatory])], + [$1],[default-enabled], [_GP_CHECK_POPT([disable])], + [$1],[default-disabled], [_GP_CHECK_POPT([enable])], + [m4_errprint(__file__:__line__:[ Error: +Illegal argument to $0: `$1' +Valid values are: mandatory, default-enabled, default-disabled +])m4_exit(1)])dnl +])dnl +dnl +AC_DEFUN([_GP_CHECK_POPT],[ +m4_if([$1],[mandatory],[ +try_popt=yes +require_popt=yes +],[ +try_popt=auto +require_popt=no +AC_ARG_ENABLE([popt], +[AS_HELP_STRING([--$1-popt],[Do not use popt])], +[ if test "x$withval" = no \ + || test "x$withval" = off \ + || test "x$withval" = false; + then + try_popt=no + require_popt=no + elif test "x$withval" = yes \ + || test "x$withval" = on \ + || test "x$withval" = true + then + try_popt=yes + require_popt=yes + fi +])dnl +])dnl + +AC_MSG_CHECKING([whether popt is required]) +AC_MSG_RESULT([${require_popt}]) + +if test "$require_popt" != yes; then + AC_MSG_CHECKING([whether popt is requested]) + AC_MSG_RESULT([${try_popt}]) +fi + +dnl Implicit AC_SUBST +AC_ARG_VAR([POPT_CFLAGS],[CPPFLAGS to compile with libpopt])dnl +AC_ARG_VAR([POPT_LIBS],[LDFLAGS to link with libpopt])dnl + +have_popt=no + +if test "x$POPT_CFLAGS" = "x" && test "x$POPT_LIBS" = "x"; then + + # try to find options to compile popt.h + CPPFLAGS_save="$CPPFLAGS" + popth_found=no + for popt_prefix in "" /usr /usr/local + do + if test -n "${popt_prefix}"; then + : + elif test -d "${popt_prefix}/include"; then + CPPFLAGS="-I${popt_prefix}/include ${CPPFLAGS}" + else + continue + fi + ac_cv_header_popt_h="" + unset ac_cv_header_popt_h + AC_CHECK_HEADER([popt.h], [popth_found=yes]) + if test "$popth_found" = yes; then break; fi + done + CPPFLAGS="$CPPFLAGS_save" + if test "$popth_found" = "yes"; then + if test "$popt_prefix" = ""; then + POPT_CFLAGS="" + else + POPT_CFLAGS="-I${popt_prefix}/include" + fi + else + AC_MSG_ERROR([ +* Cannot autodetect popt.h +* +* Set POPT_CFLAGS and POPT_LIBS correctly. +]) + fi + + # try to find options to link against popt + LDFLAGS_save="$LDFLAGS" + popt_links=no + for popt_prefix in /usr "" /usr/local; do + # We could have "/usr" and "lib64" at the beginning of the + # lists. Then the first tested location would + # incidentally be the right one on 64bit systems, and + # thus work around a bug in libtool on 32bit systems: + # + # 32bit libtool doesn't know about 64bit systems, and so the + # compilation will fail when linking a 32bit library from + # /usr/lib to a 64bit binary. + # + # This hack has been confirmed to workwith a + # 32bit Debian Sarge and 64bit Fedora Core 3 system. + for ldir in lib64 "" lib; do + popt_libdir="${popt_prefix}/${ldir}" + if test "${popt_libdir}" = "/"; then + popt_libdir="" + elif test -d "${popt_libdir}"; then + LDFLAGS="-L${popt_libdir} ${LDFLAGS}" + else + continue + fi + # Avoid caching of results + ac_cv_lib_popt_poptStuffArgs="" + unset ac_cv_lib_popt_poptStuffArgs + AC_CHECK_LIB([popt], [poptStuffArgs], [popt_links=yes]) + if test "$popt_links" = yes; then break; fi + done + if test "$popt_links" = yes; then break; fi + done + LDFLAGS="$LDFLAGS_save" + if test "$popt_links" = "yes"; then + if test "$popt_libdir" = ""; then + POPT_LIBS="-lpopt" + else + POPT_LIBS="-L${popt_libdir} -lpopt" + fi + else + AC_MSG_ERROR([ +* Cannot autodetect library directory containing popt +* +* Set POPT_CFLAGS and POPT_LIBS correctly. +]) + fi + have_popt=yes +elif test "x$POPT_CFLAGS" != "x" && test "x$POPT_LIBS" != "x"; then + # just use the user specivied option + popt_msg="yes (user specified)" + have_popt=yes +else + AC_MSG_ERROR([ +* Fatal: Either set both POPT_CFLAGS and POPT_LIBS or neither. +]) +fi + +AC_MSG_CHECKING([if popt is functional]) +if test "$require_popt$have_popt" = "yesno"; then + AC_MSG_RESULT([no, but required]) + AC_MSG_ERROR([ +* popt library not found +* Fatal: ${PACKAGE_NAME} (${PACKAGE_TARNAME}) requires popt +* Please install it and/or set POPT_CFLAGS and POPT_LIBS. +]) +fi +AC_MSG_RESULT([${have_popt}]) + +GP_CONFIG_MSG([use popt library], [${have_popt}]) +if test "$have_popt" = "yes"; then + AC_DEFINE([HAVE_POPT],[1],[whether the popt library is available]) + GP_CONFIG_MSG([popt libs],[${POPT_LIBS}]) + GP_CONFIG_MSG([popt cppflags],[${POPT_CFLAGS}]) +fi +AM_CONDITIONAL([HAVE_POPT],[test "$have_popt" = "yes"]) +])dnl +dnl +dnl Please do not remove this: +dnl filetype: 7595380e-eff3-49e5-90ab-e40f1d544639 +dnl I use this to find all the different instances of this file which +dnl are supposed to be synchronized. +dnl +dnl Local Variables: +dnl mode: autoconf +dnl End: |