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acinclude.m4: add local copy of PKG_CHECK_VAR

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Just in case an old distro tries to autoreconf and doesn't
come with newer pkg_ macros.
This commit is contained in:
Zdenek Kabelac 2023-02-11 00:26:08 +01:00
parent 8630a19d1e
commit 7f2864b5b1
1 changed files with 18 additions and 0 deletions
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18
acinclude.m4
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@ -62,6 +62,24 @@ AC_DEFUN([AC_TRY_LDFLAGS],
fi
])
dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
dnl -------------------------------------------
dnl Since: 0.28
dnl
dnl Retrieves the value of the pkg-config variable for the given module.
AC_DEFUN([PKG_CHECK_VAR],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
_PKG_CONFIG([$1], [variable="][$3]["], [$2])
AS_VAR_COPY([$1], [pkg_cv_][$1])
AS_VAR_IF([$1], [""], [$5], [$4])dnl
])dnl PKG_CHECK_VAR
# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_gcc_builtin.html
# ===========================================================================