| dnl @synopsis GP_CHECK_LIBRARY([VARNAMEPART],[libname],[VERSION-REQUIREMENT], |
| dnl [headername],[functionname], |
| dnl [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND], |
| dnl [OPTIONAL-REQUIRED-ETC],[WHERE-TO-GET-IT]) |
| dnl |
| dnl Checks for the presence of a certain library. |
| dnl |
| dnl Parameters: |
| dnl |
| dnl VARNAMEPART partial variable name for variable definitions |
| dnl libname name of library |
| dnl VERSION-REQUIREMENT check for the version using pkg-config. |
| dnl default: [] |
| dnl headername name of header file |
| dnl default: [] |
| dnl functionname name of function name in library |
| dnl default: [] |
| dnl ACTION-IF-FOUND shell action to execute if found |
| dnl default: [] |
| dnl ACTION-IF-NOT-FOUND shell action to execute if not found |
| dnl default: [] |
| dnl OPTIONAL-REQUIRED-ETC one of "mandatory", "default-on", "default-off" |
| dnl "disable-explicitly" |
| dnl default: [mandatory] |
| dnl WHERE-TO-GET-IT place where to find the library, e.g. a URL |
| dnl default: [] |
| dnl |
| dnl What the ACTION-IFs can do: |
| dnl |
| dnl * change the variable have_[$1] to "yes" or "no" and thus change |
| dnl the outcome of the test |
| dnl * execute additional checks to define more specific variables, e.g. |
| dnl for different API versions |
| dnl |
| dnl What the OPTIONAL-REQUIRED-ETC options mean: |
| dnl |
| dnl mandatory Absolute requirement, cannot be disabled. |
| dnl default-on If found, it is used. If not found, it is not used. |
| dnl default-off In case of --with-libfoo, detect it. Without |
| dnl --with-libfoo, do not look for and use it. |
| dnl disable-explicitly Required by default, but can be disabled by |
| dnl explicitly giving --without-libfoo. |
| dnl |
| dnl These results have happened after calling GP_CHECK_LIBRARY: |
| dnl |
| dnl AM_CONDITIONAL([HAVE_VARPREFIX],[ if found ]) |
| dnl AM_SUBST([have_VARPREFIX], [ "yes" if found, "no" if not found ]) |
| dnl AM_SUBST([VARPREFIX_CFLAGS],[ -I, -D and stuff ]) |
| dnl AM_SUBST([VARPREFIX_LIBS], [ /path/to/libname.la -L/path -lfoo ]) |
| dnl |
| dnl Parameters to ./configure which influence the GP_CHECK_LIBRARY results: |
| dnl |
| dnl * VARNAMEPART_LIBS=/foobar/arm-palmos/lib/libname.la |
| dnl VARNAMEPART_CFLAGS=-I/foobar/include |
| dnl * --without-libfoo |
| dnl * --with-libfoo=/usr/local |
| dnl * --with-libfoo-include-dir=/foobar/include |
| dnl * --with-libfoo-lib=/foobar/arm-palmos/lib |
| dnl * --with-libfoo=autodetect |
| dnl |
| dnl Examples: |
| dnl GP_CHECK_LIBRARY([LIBEXIF], [libexif])dnl |
| dnl GP_CHECK_LIBRARY([LIBEXIF], [libexif-gtk], [>= 0.3.3])dnl |
| dnl note the space! ^ |
| dnl |
| dnl Possible enhancements: |
| dnl |
| dnl * Derive VAR_PREFIX directly from libname |
| dnl This will change the calling conventions, so be aware of that. |
| dnl * Give names of a header file and function name and to a test |
| dnl compilation. |
| dnl |
| AC_DEFUN([_GP_CHECK_LIBRARY_SOEXT],[dnl |
| AC_MSG_CHECKING([for dynamic library extension]) |
| soext="" |
| case "$host" in |
| *linux*) soext=".so" ;; |
| *sunos*) soext=".so" ;; |
| *solaris*) soext=".so" ;; |
| *bsd*) soext=".so" ;; |
| *darwin*) soext=".dylib" ;; |
| *w32*) soext=".dll" ;; |
| esac |
| if test "x$soext" = "x"; then |
| soext=".so" |
| AC_MSG_RESULT([${soext}]) |
| AC_MSG_WARN([ |
| Host system "${host}" not recognized, defaulting to "${soext}". |
| ]) |
| else |
| AC_MSG_RESULT([${soext}]) |
| fi |
| ])dnl |
| dnl |
| AC_DEFUN([_GP_CHECK_LIBRARY],[ |
| # ---------------------------------------------------------------------- |
| # [GP_CHECK_LIBRARY]([$1],[$2],[$3], |
| # [$4],[$5], |
| # [...],[...],[$8]) |
| m4_ifval([$9],[dnl |
| # $9 |
| ])dnl |
| # ---------------------------------------------------------------------- |
| dnl |
| AC_REQUIRE([GP_CONFIG_MSG])dnl |
| AC_REQUIRE([GP_PKG_CONFIG])dnl |
| AC_REQUIRE([_GP_CHECK_LIBRARY_SOEXT])dnl |
| dnl Use _CFLAGS and _LIBS given to configure. |
| dnl This makes it possible to set these vars in a configure script |
| dnl and AC_CONFIG_SUBDIRS this configure. |
| AC_ARG_VAR([$1][_CFLAGS], [CFLAGS for compiling with ][$2])dnl |
| AC_ARG_VAR([$1][_LIBS], [LIBS to add for linking against ][$2])dnl |
| dnl |
| AC_MSG_CHECKING([for ][$2][ to use]) |
| userdef_[$1]=no |
| have_[$1]=no |
| if test "x${[$1][_LIBS]}" = "x" && test "x${[$1][_CFLAGS]}" = "x"; then |
| dnl define --with/--without argument |
| m4_if([$8], [default-off], |
| [m4_pushdef([gp_lib_arg],[--without-][$2])dnl |
| try_[$1]=no |
| ], |
| [m4_pushdef([gp_lib_arg],[--with-][$2])dnl |
| try_[$1]=auto |
| ])dnl |
| AC_ARG_WITH([$2],[AS_HELP_STRING([gp_lib_arg][=PREFIX],[where to find ][$2][, "no" or "auto"])],[try_][$1][="$withval"]) |
| if test "x${[try_][$1]}" = "xauto"; then [try_][$1]=autodetect; fi |
| AC_MSG_RESULT([${try_][$1][}]) |
| m4_popdef([gp_lib_arg])dnl |
| if test "x${[try_][$1]}" = "xautodetect"; then |
| dnl OK, we have to autodetect. |
| dnl We start autodetection with the cleanest known method: pkg-config |
| if test "x${[have_][$1]}" = "xno"; then |
| dnl we need that line break after the PKG_CHECK_MODULES |
| m4_ifval([$3], |
| [PKG_CHECK_MODULES([$1],[$2][ $3],[have_][$1][=yes],[:])], |
| [PKG_CHECK_MODULES([$1],[$2], [have_][$1][=yes],[:])] |
| ) |
| fi |
| dnl If pkg-config didn't find anything, try the libfoo-config program |
| dnl certain known libraries ship with. |
| if test "x${[have_][$1]}" = "xno"; then |
| AC_MSG_WARN([The `$2' library could not be found using pkg-config. |
| No version checks will be performed if it is found using any other method.]) |
| AC_MSG_CHECKING([$2][ config program]) |
| m4_pushdef([gp_lib_config],[m4_if([$2],[libusb],[libusb-config], |
| [$2],[libgphoto2],[gphoto2-config], |
| [$2],[libgphoto2_port],[gphoto2-port-config], |
| [none])])dnl |
| AC_MSG_RESULT([gp_lib_config]) |
| AC_PATH_PROG([$1][_CONFIG_PROG],[gp_lib_config]) |
| if test -n "${[$1][_CONFIG_PROG]}" && |
| test "${[$1][_CONFIG_PROG]}" != "none"; then |
| AC_MSG_CHECKING([for ][$2][ parameters from ][gp_lib_config]) |
| [$1]_LIBS="$(${[$1][_CONFIG_PROG]} --libs || echo "*error*")" |
| [$1]_CFLAGSS="$(${[$1][_CONFIG_PROG]} --cflags || echo "*error*")" |
| if test "x${[$1]_LIBS}" = "*error*" || |
| test "x${[$1]_CFLAGS}" = "*error*"; then |
| AC_MSG_RESULT([error]) |
| else |
| have_[$1]=yes |
| AC_MSG_RESULT([ok]) |
| fi |
| fi |
| m4_popdef([gp_lib_config])dnl |
| fi |
| dnl Neither pkg-config, nor the libfoo-config program have found anything. |
| dnl So let's just probe the system. |
| if test "x${[have_][$1]}" = "xno"; then |
| ifs="$IFS" |
| IFS=":" # FIXME: for W32 and OS/2 we may need ";" here |
| for _libdir_ in \ |
| ${LD_LIBRARY_PATH} \ |
| "${libdir}" \ |
| "${prefix}/lib64" "${prefix}/lib" \ |
| /usr/lib64 /usr/lib \ |
| /usr/local/lib64 /usr/local/lib \ |
| /opt/lib64 /opt/lib |
| do |
| IFS="$ifs" |
| for _soext_ in .la ${soext} .a; do |
| if test -f "${_libdir_}/[$2]${_soext_}" |
| then |
| if test "x${_soext_}" = "x.la" || |
| test "x${_soext_}" = "x.a"; then |
| [$1]_LIBS="${_libdir_}/[$2]${_soext_}" |
| else |
| [$1]_LIBS="-L${_libdir_} -l$(echo "$2" | sed 's/^lib//')" |
| fi |
| break |
| fi |
| done |
| if test "x${[$1][_LIBS]}" != "x"; then |
| break |
| fi |
| done |
| IFS="$ifs" |
| if test "x${[$1][_LIBS]}" != "x"; then |
| have_[$1]=yes |
| fi |
| fi |
| elif test "x${[try_][$1]}" = "xno"; then |
| : |
| else |
| [$1][_LIBS]="-L${[try_][$1]}/lib -l$(echo "$2" | sed 's/^lib//')" |
| [$1][_CFLAGS]="-I${[try_][$1]}/include" |
| fi |
| elif test "x${[$1][_LIBS]}" != "x" && test "x${[$1][_CFLAGS]}" != "x"; then |
| AC_MSG_RESULT([user-defined]) |
| userdef_[$1]=yes |
| have_[$1]=yes |
| else |
| AC_MSG_RESULT([broken call]) |
| AC_MSG_ERROR([ |
| * Fatal: |
| * When calling configure for ${PACKAGE_TARNAME} |
| * ${PACKAGE_NAME} |
| * either set both [$1][_LIBS] *and* [$1][_CFLAGS] |
| * or neither. |
| ]) |
| fi |
| dnl |
| dnl ACTION-IF-FOUND |
| dnl |
| m4_ifval([$6],[dnl |
| if test "x${[have_][$1]}" = "xyes"; then |
| # ACTION-IF-FOUND |
| $6 |
| fi |
| ])dnl |
| dnl |
| dnl ACTION-IF-NOT-FOUND |
| dnl |
| m4_ifval([$7],[dnl |
| if test "x${[have_][$1]}" = "xno"; then |
| # ACTION-IF-NOT-FOUND |
| $7 |
| fi |
| ])dnl |
| dnl |
| dnl Run our own test compilation |
| dnl |
| m4_ifval([$4],[dnl |
| if test "x${[have_][$1]}" = "xyes"; then |
| dnl AC_MSG_CHECKING([whether ][$2][ test compile succeeds]) |
| dnl AC_MSG_RESULT([${[have_][$1]}]) |
| CPPFLAGS_save="$CPPFLAGS" |
| CPPFLAGS="${[$1]_CFLAGS}" |
| AC_CHECK_HEADER([$4],[have_][$1][=yes],[have_][$1][=no]) |
| CPPFLAGS="$CPPFLAGS_save" |
| fi |
| ])dnl |
| dnl |
| dnl Run our own test link |
| dnl Does not work for libraries which be built after configure time, |
| dnl so we deactivate it for them (userdef_). |
| dnl |
| m4_ifval([$5],[dnl |
| if test "x${[userdef_][$1]}" = "xno" && test "x${[have_][$1]}" = "xyes"; then |
| AC_MSG_CHECKING([for function ][$5][ in ][$2]) |
| LIBS_save="$LIBS" |
| LIBS="${[$1]_LIBS}" |
| AC_TRY_LINK_FUNC([$5],[],[have_][$1][=no]) |
| LIBS="$LIBS_save" |
| AC_MSG_RESULT([${[have_][$1]}]) |
| fi |
| ])dnl |
| dnl |
| dnl Abort configure script if mandatory, but not found |
| dnl |
| m4_if([$8],[mandatory],[ |
| if test "x${[have_][$1]}" = "xno"; then |
| AC_MSG_ERROR([ |
| PKG_CONFIG_PATH=${PKG_CONFIG_PATH} |
| [$1][_LIBS]=${[$1][_LIBS]} |
| [$1][_CFLAGS]=${[$1][_CFLAGS]} |
| |
| * Fatal: ${PACKAGE_NAME} requires $2 to build. |
| * |
| * Possible solutions: |
| * - set PKG_CONFIG_PATH to adequate value |
| * - call configure with [$1][_LIBS]=.. and [$1][_CFLAGS]=.. |
| * - call configure with one of the --with-$2 parameters |
| ]m4_ifval([$9],[dnl |
| * - get $2 and install it |
| ],[dnl |
| * - get $2 and install it: |
| $9])) |
| fi |
| ])dnl |
| dnl |
| dnl Abort configure script if not found and not explicitly disabled |
| dnl |
| m4_if([$8],[disable-explicitly],[ |
| if test "x${[try_][$1]}" != "xno" && test "x${[have_][$1]}" = "xno"; then |
| AC_MSG_ERROR([ |
| PKG_CONFIG_PATH=${PKG_CONFIG_PATH} |
| [$1][_LIBS]=${[$1][_LIBS]} |
| [$1][_CFLAGS]=${[$1][_CFLAGS]} |
| |
| * Fatal: ${PACKAGE_NAME} by default requires $2 to build. |
| * You must explicitly disable $2 to build ${PACKAGE_TARNAME} without it. |
| * |
| * Possible solutions: |
| * - call configure with --with-$2=no or --without-$2 |
| * - set PKG_CONFIG_PATH to adequate value |
| * - call configure with [$1][_LIBS]=.. and [$1][_CFLAGS]=.. |
| * - call configure with one of the --with-$2 parameters |
| ]m4_ifval([$9],[dnl |
| * - get $2 and install it |
| ],[dnl |
| * - get $2 and install it: |
| $9])) |
| fi |
| ])dnl |
| AM_CONDITIONAL([HAVE_][$1], [test "x$have_[$1]" = "xyes"]) |
| if test "x$have_[$1]" = "xyes"; then |
| AC_DEFINE([HAVE_][$1], 1, [whether we compile with ][$2][ support]) |
| GP_CONFIG_MSG([$2],[yes])dnl |
| AC_MSG_CHECKING([$2][ library flags]) |
| AC_MSG_RESULT([${[$1][_LIBS]}]) |
| AC_MSG_CHECKING([$2][ cpp flags]) |
| AC_MSG_RESULT([${[$1][_CFLAGS]}]) |
| else |
| GP_CONFIG_MSG([$2],[no])dnl |
| fi |
| dnl AC_SUBST is done implicitly by AC_ARG_VAR above. |
| dnl AC_SUBST([$1][_LIBS]) |
| dnl AC_SUBST([$1][_CFLAGS]) |
| ])dnl |
| dnl |
| dnl #################################################################### |
| dnl |
| AC_DEFUN([_GP_CHECK_LIBRARY_SYNTAX_ERROR],[dnl |
| m4_errprint(__file__:__line__:[ Error: |
| *** Calling $0 macro with old syntax |
| *** Aborting. |
| ])dnl |
| m4_exit(1)dnl |
| ])dnl |
| dnl |
| dnl #################################################################### |
| dnl |
| AC_DEFUN([GP_CHECK_LIBRARY],[dnl |
| m4_if([$4], [mandatory], [_GP_CHECK_LIBRARY_SYNTAX_ERROR($0)], |
| [$4], [default-enabled], [_GP_CHECK_LIBRARY_SYNTAX_ERROR($0)], |
| [$4], [default-disabled], [_GP_CHECK_LIBRARY_SYNTAX_ERROR($0)])dnl |
| m4_if([$8], [], [dnl |
| _GP_CHECK_LIBRARY([$1],[$2],[$3],[$4],[$5],[$6],[$7],[mandatory],[$9])], |
| [$8], [default-on], [dnl |
| _GP_CHECK_LIBRARY([$1],[$2],[$3],[$4],[$5],[$6],[$7],[$8],[$9])], |
| [$8], [disable-explicitly], [dnl |
| _GP_CHECK_LIBRARY([$1],[$2],[$3],[$4],[$5],[$6],[$7],[$8],[$9])], |
| [$8], [default-off], [dnl |
| _GP_CHECK_LIBRARY([$1],[$2],[$3],[$4],[$5],[$6],[$7],[$8],[$9])], |
| [$8], [mandatory], [dnl |
| _GP_CHECK_LIBRARY([$1],[$2],[$3],[$4],[$5],[$6],[$7],[$8],[$9])], |
| [m4_errprint(__file__:__line__:[ Error: |
| Illegal argument 6 to $0: `$6' |
| It must be one of "default-on", "default-off", "mandatory". |
| ])m4_exit(1)])dnl |
| ])dnl |
| dnl |
| m4_pattern_disallow([GP_CHECK_LIBRARY]) |
| m4_pattern_disallow([_GP_CHECK_LIBRARY]) |
| m4_pattern_disallow([_GP_CHECK_LIBRARY_SYNTAX_ERROR]) |
| m4_pattern_disallow([_GP_CHECK_LIBRARY_SOEXT]) |
| dnl |
| dnl #################################################################### |
| dnl |
| dnl Please do not remove this: |
| dnl filetype: 6e60b4f0-acb2-4cd5-8258-42014f92bd2c |
| 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: |
