dnl dnl @synopsis ST_LIB_ARCHIVE([ENABLED-DEFAULT]) dnl dnl This macro figures out what's necessary to link a program against an dnl instance of the BSD libarchive package by Tim Kientzle. dnl dnl See http://people.freebsd.org/~kientzle/libarchive/ for more info. dnl dnl It exports and substitutes the variables LIBARCHIVE_LIBS, LIBARCHIVE_LDFLAGS, dnl and LIBARCHIVE_CPPFLAGS to appropriate values for the identified instance of dnl libarchive. The values are AC_SUBST'd, so a user could, for example, simply dnl include @LIBARCHIVE_CPPFLAGS@ in the definition of AM_CPPFLAGS in a Makefile.am. dnl dnl ENABLED-DEFAULT is either "yes" or "no" and determines whether the default value dnl is --with-libarchive or --without-libarchive. It is not possible to specify a dnl default directory. More simply, any reasonable choice for a default should just dnl go into the auto-detect list. dnl dnl The macro defines the symbol HAVE_LIBARCHIVE if the library is found. You dnl should use autoheader to include a definition for this symbol in a config.h dnl file. Sample usage in a C/C++ source is as follows: dnl dnl #ifdef HAVE_LIBARCHIVE dnl #include dnl #endif /* HAVE_LIBARCHIVE */ dnl dnl @category InstalledPackages dnl @author Andre Stechert dnl @version 2006-04-20 dnl @license GPLWithACException AC_DEFUN([ST_LIB_ARCHIVE], [ # # Handle input from the configurer and blend with the requirements from the maintainer. # We go through the trouble of creating a second set of variables other than the with_foo # variables in order to be sure that error/corner cases have been cleaned up. # # After this statement, three trusted variable are defined. # # st_lib_archive_ENABLED will be either "yes" or "no". its value determines whether # or not we bother with the rest of the checks and whether or not we export a # bunch of variables. # # st_lib_archive_LOCATION will be either "auto" or "defined". if it is "auto", then # we try a bunch of standard locations. if it is "defined", then we just try the value # provided in st_lib_archive_DIR. # # st_lib_archive_DIR will contain the string provided by the user, provided that it's # actually a directory. # AC_MSG_CHECKING([if libarchive is wanted]) AC_ARG_WITH([libarchive], AS_HELP_STRING([--with-libarchive=DIR], [libarchive installation directory]), [if test "x$with_libarchive" = "xno" ; then st_lib_archive_ENABLED=no elif test "x$with_libarchive" = "xyes" ; then st_lib_archive_ENABLED=yes st_lib_archive_LOCATION=auto else st_lib_archive_ENABLED=yes st_lib_archive_LOCATION=defined if test -d "$with_libarchive" ; then st_lib_archive_DIR="$with_libarchive" else AC_MSG_ERROR([$with_libarchive is not a directory]) fi fi], [if test "x$1" = "xno" ; then st_lib_archive_ENABLED=no elif test "x$1" = "xyes" ; then st_lib_archive_ENABLED=yes else st_lib_archive_ENABLED=yes fi]) if test "$st_lib_archive_ENABLED" = "yes" ; then AC_MSG_RESULT([yes]) # # After this statement, one trusted variable is defined. # # st_lib_archive_LIB will be either "lib" or "lib64", depending on whether the configurer # specified 32, 64. The default is "lib". # AC_MSG_CHECKING([whether to use lib or lib64]) AC_ARG_WITH([libarchive-bits], AS_HELP_STRING([--with-libarchive-bits=32/64], [if 64, look in /lib64 on hybrid systems]), [if test "x$with_libarchive_bits" = "x32" ; then st_lib_archive_LIB=lib elif test "x$with_libarchive_bits" = "x64" ; then st_lib_archive_LIB=lib64 else AC_MSG_ERROR([the argument must be either 32 or 64]) fi], [st_lib_archive_LIB=lib]) AC_MSG_RESULT($st_lib_archive_LIB) # # Save the environment before verifying libarchive availability # st_lib_archive_SAVECPPFLAGS="$CPPFLAGS" st_lib_archive_SAVELDFLAGS="$LDFLAGS" AC_LANG_SAVE AC_LANG_C if test "x$st_lib_archive_LOCATION" = "xdefined" ; then CPPFLAGS="-I$st_lib_archive_DIR/include $st_lib_archive_SAVECPPFLAGS" LDFLAGS="-L$st_lib_archive_DIR/$st_lib_archive_LIB $st_lib_archive_SAVELDFLAGS" AC_CHECK_LIB(archive, archive_read_new, [st_lib_archive_found_lib=yes], [st_lib_archive_found_lib=no]) AC_CHECK_HEADER(archive.h, [st_lib_archive_found_hdr=yes], [st_lib_archive_found_hdr=no]) if test "x$st_lib_archive_found_lib" = "xyes" && test "x$st_lib_archive_found_hdr" = "xyes"; then LIBARCHIVE_CPPFLAGS="-I$dir/include" LIBARCHIVE_LDFLAGS="-L$dir/$st_lib_archive_LIB" else AC_MSG_ERROR([could not find libarchive in the requested location]) fi else # # These are the common install directories for Linux, FreeBSD, Solaris, and Mac. # for dir in /usr /usr/local /usr/sfw /opt/csw /opt/local /sw do if test -d "$dir" ; then CPPFLAGS="-I$dir/include $st_lib_archive_SAVECPPFLAGS" LDFLAGS="-L$dir/$st_lib_archive_LIB $st_lib_archive_SAVELDFLAGS" AC_CHECK_LIB(archive, archive_read_new, [st_lib_archive_found_lib=yes], [st_lib_archive_found_lib=no]) AC_CHECK_HEADER(archive.h, [st_lib_archive_found_hdr=yes], [st_lib_archive_found_hdr=no]) if test "x$st_lib_archive_found_lib" = "xyes" && test "x$st_lib_archive_found_hdr" = "xyes"; then LIBARCHIVE_CPPFLAGS="-I$dir/include" LIBARCHIVE_LDFLAGS="-L$dir/$st_lib_archive_LIB" break fi fi done fi if test "x$st_lib_archive_found_hdr" = "xyes" && test "x$st_lib_archive_found_lib" = "xyes" ; then LIBARCHIVE_LIBS="-larchive" AC_DEFINE([HAVE_LIBARCHIVE], [1], [Defined to 1 if libarchive is available for use.]) AC_SUBST(LIBARCHIVE_LIBS) AC_SUBST(LIBARCHIVE_CPPFLAGS) AC_SUBST(LIBARCHIVE_LDFLAGS) fi # # Restore the environment now that we're done. # AC_LANG_RESTORE CPPFLAGS="$st_lib_archive_SAVECPPFLAGS" LDFLAGS="$st_lib_archive_SAVELDFLAGS" else AC_MSG_RESULT([no]) fi AM_CONDITIONAL(LIBARCHIVE, test "x$st_lib_archive_found_lib" = "xyes" && test "x$st_lib_archive_found_hdr" = "xyes") ])