mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-07-11 20:35:46 +00:00
f92c7e31fc
Jonathan Lebon reported an issue to me off-list about his build failing to use qemu because he failed to install yajl-devel. But I recalled specifically tweaking configure.ac to die in that situation (commits350583c,ba9c38b). After a bit more head-scratching, we found the cause of the regression: commit654c709rearranged things so that the qemu version check now occurs before AC_ARG_WITH has had a chance to set either $with_qemu or $with_yajl. Coincidentally, this fix aligns with a documentation patch that was just posted to the autoconf mailing list :) http://thread.gmane.org/gmane.comp.sysutils.autoconf.patches/8324 * m4/virt-lib.m4 (LIBVIRT_CHECK_LIB, LIBVIRT_CHECK_LIB_ALT) (LIBVIRT_CHECK_PKG): Populate defaults earlier. * configure.ac (AC_ARG_WITH): Likewise for drivers. Signed-off-by: Eric Blake <eblake@redhat.com>
392 lines
12 KiB
Plaintext
392 lines
12 KiB
Plaintext
dnl
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dnl virt-lib.m4: Helper macros for checking for libraries
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dnl
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dnl Copyright (C) 2012-2013 Red Hat, Inc.
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dnl
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dnl This library is free software; you can redistribute it and/or
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dnl modify it under the terms of the GNU Lesser General Public
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dnl License as published by the Free Software Foundation; either
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dnl version 2.1 of the License, or (at your option) any later version.
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dnl
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dnl This library is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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dnl Lesser General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU Lesser General Public
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dnl License along with this library. If not, see
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dnl <http://www.gnu.org/licenses/>.
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dnl
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dnl Probe for existence of libXXXX and set WITH_XXX
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dnl config header var, WITH_XXXX make conditional and
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dnl with_XXX configure shell var.
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dnl
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dnl LIBVIRT_CHECK_LIB([CHECK_NAME], [LIBRARY_NAME],
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dnl [FUNCTION_NAME], [HEADER_NAME])
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dnl
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dnl CHECK_NAME: Suffix/prefix used for variables / flags, in uppercase.
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dnl Used to set
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dnl config.h: WITH_XXX macro
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dnl Makefile: WITH_XXX conditional
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dnl Makefile: XXX_CFLAGS, XXX_LIBS variables
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dnl configure: --with-xxx argument
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dnl configure: with_xxx variable
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dnl
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dnl LIBRARY_NAME: base name of library to check for eg libXXX.so
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dnl FUNCTION_NAME: function to check for in libXXX.so
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dnl HEADER_NAME: header file to check for
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dnl
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dnl e.g.
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dnl
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dnl LIBVIRT_CHECK_LIB([SELINUX], [selinux],
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dnl [getfilecon], [selinux/selinux.h])
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dnl LIBVIRT_CHECK_LIB([SANLOCK], [sanlock_client],
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dnl [sanlock_init], [sanlock.h])
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dnl LIBVIRT_CHECK_LIB([LIBATTR], [attr],
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dnl [getxattr], [attr/attr.h])
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dnl
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AC_DEFUN([LIBVIRT_CHECK_LIB],[
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m4_pushdef([check_name], [$1])
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m4_pushdef([library_name], [$2])
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m4_pushdef([function_name], [$3])
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m4_pushdef([header_name], [$4])
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m4_pushdef([check_name_lc], m4_tolower(check_name))
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m4_pushdef([config_var], [WITH_]check_name)
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m4_pushdef([make_var], [WITH_]check_name)
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m4_pushdef([cflags_var], check_name[_CFLAGS])
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m4_pushdef([libs_var], check_name[_LIBS])
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m4_pushdef([arg_var], [with-]check_name_lc)
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m4_pushdef([with_var], [with_]check_name_lc)
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m4_divert_text([DEFAULTS], [with_var][=check])
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AC_ARG_WITH(check_name_lc,
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[AS_HELP_STRING([--arg_var],
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[with lib]]m4_dquote(library_name)[[ support @<:@default=check@:>@])])
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old_LIBS=$LIBS
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old_CFLAGS=$CFLAGS
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cflags_var=
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libs_var=
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fail=0
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if test "x$with_var" != "xno" ; then
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if test "x$with_var" != "xyes" && test "x$with_var" != "xcheck" ; then
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cflags_var="-I$with_var/include"
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libs_var="-L$with_var/lib"
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fi
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CFLAGS="$CFLAGS $cflags_var"
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LIBS="$LIBS $libs_var"
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AC_CHECK_LIB(library_name, function_name, [],[
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if test "x$with_var" != "xcheck"; then
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fail=1
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fi
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with_var=no
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])
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if test "$fail" = "0" && test "x$with_var" != "xno" ; then
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AC_CHECK_HEADER([header_name], [
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with_var=yes
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],[
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if test "x$with_var" != "xcheck"; then
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fail=1
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fi
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with_var=no
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])
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fi
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fi
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LIBS=$old_LIBS
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CFLAGS=$old_CFLAGS
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if test $fail = 1; then
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AC_MSG_ERROR([You must install the lib]library_name[ library & headers to compile libvirt])
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else
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if test "x$with_var" = "xyes" ; then
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if test "x$libs_var" = 'x' ; then
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libs_var="-l[]library_name"
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else
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libs_var="$libs_var -l[]library_name"
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fi
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AC_DEFINE_UNQUOTED(config_var, 1, [whether lib]library_name[ is available])
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fi
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AM_CONDITIONAL(make_var, [test "x$with_var" = "xyes"])
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AC_SUBST(cflags_var)
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AC_SUBST(libs_var)
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fi
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m4_popdef([with_var])
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m4_popdef([arg_var])
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m4_popdef([libs_var])
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m4_popdef([cflags_var])
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m4_popdef([make_var])
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m4_popdef([config_var])
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m4_popdef([check_name_lc])
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m4_popdef([header_name])
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m4_popdef([function_name])
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m4_popdef([library_name])
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m4_popdef([check_name])
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])
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dnl Probe for existence of libXXXX and set WITH_XXX
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dnl config header var, WITH_XXXX make conditional and
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dnl with_XXX configure shell var.
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dnl
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dnl LIBVIRT_CHECK_LIB_ALT([CHECK_NAME], [LIBRARY_NAME],
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dnl [FUNCTION_NAME], [HEADER_NAME],
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dnl [CHECK_NAME_ALT, [LIBRARY_NAME_ALT],
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dnl [FUNCTION_NAME_ALT], [HEADER_NAME_ALT])
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dnl
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dnl CHECK_NAME: Suffix/prefix used for variables / flags, in uppercase.
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dnl Used to set
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dnl config.h: WITH_XXX macro
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dnl Makefile: WITH_XXX conditional
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dnl Makefile: XXX_CFLAGS, XXX_LIBS variables
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dnl configure: --with-xxx argument
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dnl configure: with_xxx variable
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dnl
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dnl LIBRARY_NAME: base name of library to check for eg libXXX.so
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dnl FUNCTION_NAME: function to check for in libXXX.so
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dnl HEADER_NAME: header file to check for
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dnl
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dnl CHECK_NAME_ALT: Suffix/prefix used to set additional
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dnl variables if alternative check succeeds
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dnl config.h: WITH_XXX macro
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dnl Makefile: WITH_XXX conditional
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dnl NB all vars for CHECK_NAME are also set
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dnl LIBRARY_NAME_ALT: alternative library name to check for
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dnl FUNCTION_NAME_ALT: alternative function name to check for
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dnl HEADER_NAME_ALT: alternative header file to check for
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dnl
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dnl e.g.
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dnl
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dnl LIBVIRT_CHECK_LIB([YAJL], [yajl],
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dnl [yajl_parse_complete], [yajl/yajl_common.h],
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dnl [YAJL2], [yajl],
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dnl [yajl_tree_parse], [yajl/yajl_common.h])
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dnl
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AC_DEFUN([LIBVIRT_CHECK_LIB_ALT],[
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m4_pushdef([check_name], [$1])
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m4_pushdef([library_name], [$2])
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m4_pushdef([function_name], [$3])
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m4_pushdef([header_name], [$4])
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m4_pushdef([check_name_alt], [$5])
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m4_pushdef([library_name_alt], [$6])
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m4_pushdef([function_name_alt], [$7])
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m4_pushdef([header_name_alt], [$8])
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m4_pushdef([check_name_lc], m4_tolower(check_name))
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m4_pushdef([config_var], [WITH_]check_name)
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m4_pushdef([make_var], [WITH_]check_name)
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m4_pushdef([cflags_var], check_name[_CFLAGS])
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m4_pushdef([libs_var], check_name[_LIBS])
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m4_pushdef([arg_var], [with-]check_name_lc)
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m4_pushdef([with_var], [with_]check_name_lc)
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m4_pushdef([config_var_alt], [WITH_]check_name_alt)
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m4_pushdef([make_var_alt], [WITH_]check_name_alt)
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m4_divert_text([DEFAULTS], [with_var][=check])
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AC_ARG_WITH(check_name_lc,
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[AS_HELP_STRING([--arg_var],
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[with lib]]m4_dquote(library_name)[[ support @<:@default=check@:>@])])
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old_LIBS=$LIBS
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old_CFLAGS=$CFLAGS
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cflags_var=
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libs_var=
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fail=0
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alt=0
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if test "x$with_var" != "xno" ; then
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if test "x$with_var" != "xyes" && test "x$with_var" != "xcheck" ; then
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cflags_var="-I$with_var/include"
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libs_var="-L$with_var/lib"
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fi
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CFLAGS="$CFLAGS $cflags_var"
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LIBS="$LIBS $libs_var"
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AC_CHECK_LIB(library_name, function_name, [],[
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AC_CHECK_LIB(library_name_alt, function_name_alt, [
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alt=1
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],[
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if test "x$with_var" != "xcheck"; then
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fail=1
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fi
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with_var=no
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])
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])
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if test "$fail" = "0" && test "x$with_var" != "xno" ; then
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AC_CHECK_HEADER([header_name], [
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with_var=yes
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],[
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AC_CHECK_HEADER([header_name_alt], [
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with_var=yes
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],[
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if test "x$with_var" != "xcheck"; then
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fail=1
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fi
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with_var=no
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])
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])
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fi
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fi
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LIBS=$old_LIBS
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CFLAGS=$old_CFLAGS
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if test $fail = 1; then
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AC_MSG_ERROR([You must install the lib]library_name[ library & headers to compile libvirt])
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else
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if test "x$with_var" = "xyes" ; then
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if test "x$libs_var" = 'x' ; then
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libs_var="-l[]library_name"
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else
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libs_var="$libs_var -l[]library_name"
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fi
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AC_DEFINE_UNQUOTED(config_var, 1, [whether lib]library_name[ is available])
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if test "$alt" = "1" ; then
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AC_DEFINE_UNQUOTED(config_var_alt, 1, [whether lib]library_name[ is available])
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fi
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fi
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AM_CONDITIONAL(make_var, [test "x$with_var" = "xyes"])
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AM_CONDITIONAL(make_var_alt, [test "x$with_var" = "xyes" && test "$alt" = "1"])
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AC_SUBST(cflags_var)
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AC_SUBST(libs_var)
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fi
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m4_popdef([make_var_alt])
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m4_popdef([config_var_alt])
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m4_popdef([with_var])
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m4_popdef([arg_var])
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m4_popdef([libs_var])
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m4_popdef([cflags_var])
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m4_popdef([make_var])
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m4_popdef([config_var])
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m4_popdef([check_name_lc])
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m4_popdef([header_name_alt])
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m4_popdef([function_name_alt])
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m4_popdef([library_name_alt])
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m4_popdef([header_name])
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m4_popdef([function_name])
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m4_popdef([library_name])
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m4_popdef([check_name])
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])
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dnl
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dnl Probe for existence of libXXXX and set WITH_XXX
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dnl config header var, WITH_XXXX make conditional and
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dnl with_XXX configure shell var.
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dnl
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dnl LIBVIRT_CHECK_PKG([CHECK_NAME], [PC_NAME], [PC_VERSION])
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dnl
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dnl CHECK_NAME: Suffix/prefix used for variables / flags, in uppercase.
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dnl Used to set
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dnl config.h: WITH_XXX macro
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dnl Makefile: WITH_XXX conditional
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dnl Makefile: XXX_CFLAGS, XXX_LIBS variables
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dnl configure: --with-xxx argument
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dnl configure: with_xxx variable
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dnl PC_NAME: Name of the pkg-config module
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dnl PC_VERSION: Version of the pkg-config module
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dnl
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dnl eg
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dnl
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dnl LIBVIRT_CHECK_PKG([NETCF], [netcf], [0.1.4])
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dnl
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AC_DEFUN([LIBVIRT_CHECK_PKG],[
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m4_pushdef([check_name], [$1])
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m4_pushdef([pc_name], [$2])
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m4_pushdef([pc_version], [$3])
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m4_pushdef([check_name_lc], m4_tolower(check_name))
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m4_pushdef([config_var], [WITH_]check_name)
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m4_pushdef([make_var], [WITH_]check_name)
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m4_pushdef([cflags_var], check_name[_CFLAGS])
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m4_pushdef([libs_var], check_name[_LIBS])
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m4_pushdef([arg_var], [with-]check_name_lc)
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m4_pushdef([with_var], [with_]check_name_lc)
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m4_divert_text([DEFAULTS], [with_var][=check])
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AC_ARG_WITH(check_name_lc,
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[AS_HELP_STRING([--arg_var],
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[with ]]m4_dquote(pc_name)[[ (>= ]]m4_dquote(pc_version)[[) support @<:@default=check@:>@])])
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fail=0
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if test "x$with_var" != "xno" ; then
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PKG_CHECK_MODULES(check_name, pc_name[ >= ]pc_version, [
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with_var=yes
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],[
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if test "x$with_var" != "xcheck"; then
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fail=1
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fi
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with_var=no
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])
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fi
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if test $fail = 1; then
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AC_MSG_ERROR([You must install the ]pc_name[ >= ]pc_version[ pkg-config module to compile libvirt])
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fi
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if test "x$with_var" = "xyes" ; then
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AC_DEFINE_UNQUOTED(config_var, 1, [whether ]pc_name[ >= ]pc_version[ is available])
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fi
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AM_CONDITIONAL(make_var, [test "x$with_var" = "xyes"])
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m4_popdef([with_var])
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m4_popdef([arg_var])
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m4_popdef([libs_var])
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m4_popdef([cflags_var])
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m4_popdef([make_var])
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m4_popdef([config_var])
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m4_popdef([check_name_lc])
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m4_popdef([pc_version])
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m4_popdef([pc_name])
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m4_popdef([check_name])
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])
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dnl
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dnl To be used after a call to LIBVIRT_CHECK_LIB,
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dnl LIBVIRT_CHECK_LIB_ALT or LIBVIRT_CHECK_PKG
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dnl to print the result status
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dnl
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dnl LIBVIRT_RESULT_LIB([CHECK_NAME])
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dnl
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dnl CHECK_NAME: Suffix/prefix used for variables / flags, in uppercase.
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dnl
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dnl LIBVIRT_RESULT_LIB([SELINUX])
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dnl
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AC_DEFUN([LIBVIRT_RESULT_LIB],[
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m4_pushdef([check_name], [$1])
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m4_pushdef([check_name_lc], m4_tolower(check_name))
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m4_pushdef([cflags_var], check_name[_CFLAGS])
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m4_pushdef([libs_var], check_name[_LIBS])
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m4_pushdef([with_var], [with_]check_name_lc)
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LIBVIRT_RESULT(check_name_lc, [$with_var], [CFLAGS='$cflags_var' LIBS='$libs_var'])
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m4_popdef([with_var])
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m4_popdef([libs_var])
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m4_popdef([cflags_var])
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m4_popdef([check_name_lc])
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m4_popdef([check_name])
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])
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