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