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Diffstat (limited to 'm4m/gp-check-library.m4')
| -rw-r--r-- | m4m/gp-check-library.m4 | 378 |
1 files changed, 378 insertions, 0 deletions
diff --git a/m4m/gp-check-library.m4 b/m4m/gp-check-library.m4 new file mode 100644 index 0000000..dd3700a --- /dev/null +++ b/m4m/gp-check-library.m4 @@ -0,0 +1,378 @@ +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: |