+ AC_CHECK_LIB([pq], [PQexec],
+ [:],
+ [PG_LDFLAGS="-L`$PG_CONFIG --libdir` -R`$PG_CONFIG --libdir`"])
+ AC_SUBST(PG_LDFLAGS)
+
+ PG_LIBS=-lpq
+ AC_SUBST(PG_LIBS)
+
+ PKG_CHECK_EXISTS(libssl,
+ AC_DEFINE([USE_SSL],1,
+ [Define to 1 if the openssl library is present.])
+ ,)
+
+ # Now verify that we can actually link against libpq. If we are
+ # cross-compiling and picked up a host libpq, or if libpq is just
+ # badly installed, this will fail.
+ AC_CACHE_CHECK(
+ [whether -lpq links successfully],
+ [pspp_cv_have_libpq],
+ [save_CPPFLAGS=$CPPFLAGS
+ save_LIBS=$LIBS
+ save_LDFLAGS=$LDFLAGS
+ CPPFLAGS="$PG_CFLAGS $CPPFLAGS"
+ LIBS="$PG_LIBS $LIBS"
+ LDFLAGS="$PG_LDFLAGS $LDFLAGS"
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#include <libpq-fe.h>
+ ], [PQfinish (0);])],
+ [pspp_cv_have_libpq=yes],
+ [pspp_cv_have_libpq=no])
+ CPPFLAGS=$save_CPPFLAGS
+ LIBS=$save_LIBS
+ LDFLAGS=$save_LDFLAGS])
+
+ if test $pspp_cv_have_libpq = yes; then
+ PSQL_SUPPORT=yes
+ AC_DEFINE([PSQL_SUPPORT], [1],
+ [Define to 1 if building in support for reading from postgres
+ databases.])
+ else
+ PSQL_SUPPORT=no
+ PG_CONFIG=
+ PG_CFLAGS=
+ PG_LDFLAGS=
+ PG_LIBS=
+ fi
+else
+ PSQL_SUPPORT=no
+ pspp_cv_have_libpq=no
+fi
+AC_SUBST([PSQL_SUPPORT])
+
+dnl Check for libxml2
+PKG_CHECK_MODULES(
+ [LIBXML2], [libxml-2.0],
+ [HAVE_LIBXML2=yes],
+ [HAVE_LIBXML2=no
+ PSPP_OPTIONAL_PREREQ([libxml2])])
+
+dnl Check for zlib.
+AC_SEARCH_LIBS(
+ [gzopen], [z],
+ [HAVE_ZLIB=yes],
+ [HAVE_ZLIB=no
+ PSPP_OPTIONAL_PREREQ([zlib])])
+AC_CHECK_HEADERS(
+ [zlib.h],
+ [],
+ [HAVE_ZLIB=no
+ PSPP_OPTIONAL_PREREQ([zlib])])
+
+dnl Avoid interference between zlib's crc32() function and gnulib's
+dnl crc32() function, which have different signatures. PSPP calls
+dnl only gnulib's crc32() directly, but it calls zlib's crc32()
+dnl indirectly through other zlib calls. If we don't rename gnulib's
+dnl crc32(), then zlib will call gnulib's version instead of its own,
+dnl causing failures. (This can happen even if zlib isn't detected
+dnl directly, because other libraries that PSPP uses, e.g. libpng,
+dnl sometimes use zlib themselves.)
+AC_DEFINE(
+ [crc32], [gl_crc32],
+ [Avoid making zlib call gnulib's crc32() instead of its own.])
+
+dnl Gnumeric support requires libxml2 and zlib.
+if test $HAVE_LIBXML2 = yes && test $HAVE_ZLIB = yes; then
+ GNM_SUPPORT=yes
+ AC_DEFINE(
+ [GNM_SUPPORT], [1],
+ [Define to 1 if building in support for reading Gnumeric files.])
+else
+ GNM_SUPPORT=no
+fi
+AC_SUBST([GNM_SUPPORT])
+
+dnl ODT support requires libxml2.
+if test $HAVE_LIBXML2 = yes; then
+ AC_DEFINE(
+ [ODT_SUPPORT], [1],
+ [Define to 1 if building in support for writing ODT files.])
+fi
+AM_CONDITIONAL([ODT_SUPPORT], [test $HAVE_LIBXML2 = yes])
+
+AC_ARG_WITH(
+ gui_tools,
+ [AS_HELP_STRING([--with-gui-tools], [build the gui developer tools. For DEVELOPERS only! There is no reason why users will need this flag.])])
+if test x"$with_gui_tools" = x"yes" ; then
+ PKG_CHECK_MODULES(GLADE_UI, gladeui-1.0)
+fi
+AM_CONDITIONAL(WITH_GUI_TOOLS, test x"$with_gui_tools" = x"yes")
+
+AC_ARG_WITH(
+ [perl-module],
+ [AS_HELP_STRING([--without-perl-module], [do not build the Perl module])],
+ [case $with_perl_module in # (
+ yes|no) ;; # (
+ *) AC_MSG_FAILURE([--with-perl-module argument must be 'yes' or 'no']) ;;
+ esac
+ WITH_PERL_MODULE=$with_perl_module],
+ [if test x"$cross_compiling" != x"yes"; then
+ WITH_PERL_MODULE=yes
+ else
+ WITH_PERL_MODULE=no
+ fi])
+AC_SUBST([WITH_PERL_MODULE])
+AM_CONDITIONAL(WITH_PERL_MODULE, test $WITH_PERL_MODULE = yes)