m4: provide additional pkg-config macros

The macros provide a succint way to run a pkg-config check over modules
depending on a --with-name configure option.

There is a flexible variant to have custom behaviour if the package is
found or not and two more limited ones that just set HAVE_NAME make and
preprocessor variables.
feature/tap-sh
Luca Barbato 2012-05-03 13:27:56 -07:00 committed by William Pitcock
parent 6759cdb4ef
commit 5f35ec35a8
1 changed files with 74 additions and 0 deletions

74
pkg.m4
View File

@ -157,3 +157,77 @@ else
$3 $3
fi[]dnl fi[]dnl
])# PKG_CHECK_MODULES ])# PKG_CHECK_MODULES
# PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES,
# [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],
# [DESCRIPTION], [DEFAULT])
#
# Prepare a "--with-" configure option using the lowercase [VARIABLE-PREFIX]
# name, merging the behaviour of AC_ARG_WITH and PKG_CHECK_MODULES in a single
# macro
#
# --------------------------------------------------------------
AC_DEFUN([PKG_WITH_MODULES],
[
m4_pushdef([with_arg], m4_tolower([$1]))
m4_pushdef([description],
[m4_default([$5], [build with ]with_arg[ support])])
m4_pushdef([def_arg], [m4_default([$6], [auto])])
m4_pushdef([def_action_if_found], [AS_TR_SH([with_]with_arg)=yes])
m4_pushdef([def_action_if_not_found], [AS_TR_SH([with_]with_arg)=no])
m4_case(def_arg,
[yes],[m4_pushdef([with_without], [--without-]with_arg)],
[m4_pushdef([with_without],[--with-]with_arg)])
AC_ARG_WITH(with_arg,
AS_HELP_STRING(with_without, description[ @<:@default=]def_arg[@:>@]),,
[AS_TR_SH([with_]with_arg)=def_arg])
AS_CASE([$AS_TR_SH([with_]with_arg)],
[yes],[PKG_CHECK_MODULES([$1],[$2],$3,$4)],
[auto],[PKG_CHECK_MODULES([$1],[$2],
[m4_n([def_action_if_found]) $3],
[m4_n([def_action_if_not_found]) $4])])
m4_popdef([with_arg])
m4_popdef([description])
m4_popdef([def_arg])
]) dnl PKG_WITH_MODULES
# PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
# [DESCRIPTION], [DEFAULT])
#
# Convenience macro to trigger AM_CONDITIONAL after
# PKG_WITH_MODULES check.
#
# HAVE_[VARIABLE-PREFIX] is exported as make variable.
#
# --------------------------------------------------------------
AC_DEFUN([PKG_HAVE_WITH_MODULES],
[
PKG_WITH_MODULES([$1],[$2],,,[$3],[$4])
AM_CONDITIONAL([HAVE_][$1],
[test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"])
])
# PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
# [DESCRIPTION], [DEFAULT])
#
# Convenience macro to run AM_CONDITIONAL and AC_DEFINE after
# PKG_WITH_MODULES check.
#
# HAVE_[VARIABLE-PREFIX] is exported as make and preprocessor variable.
#
# --------------------------------------------------------------
AC_DEFUN([PKG_HAVE_DEFINE_WITH_MODULES],
[
PKG_HAVE_WITH_MODULES([$1],[$2],[$3],[$4])
AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
[AC_DEFINE([HAVE_][$1], 1, [Enable ]m4_tolower([$1])[ support])])
])