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build: Add support for pkg-config < 0.28 for old autoconf versions
The PKG_CHECK_VAR() macro is not available on versions of pkgconfig before
0.28, which breaks configure on RHEL-7, Ubuntu 16, and others.
This patch copies the definition generated by newer versions of autoconf
to be used for compatibility with older versions. Tested with automake
1.14.1-2ubuntu1 and autoconf 2.69-6 on Ubuntu 14.
Signed-off-by: Juliusz Sosinowicz <juliusz@wolfssl.com>
Acked-by: David Sommerseth <davids@openvpn.net>
Message-Id: <20210318181258.89704-1-juliusz@wolfssl.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg21708.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Juliusz Sosinowicz authored on 2021/03/19 03:12:58Showing 1 changed files
| ... | ... |
@@ -64,6 +64,22 @@ ifdef( |
| 64 | 64 |
AC_DEFUN([AC_TYPE_UINT64_T], []) |
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] |
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) |
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+ifdef( |
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+ [PKG_CHECK_VAR], |
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+ , |
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+ [ |
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+ AC_DEFUN([PKG_CHECK_VAR], |
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+ [AC_REQUIRE([PKG_PROG_PKG_CONFIG]) |
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+ AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config]) |
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+ |
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+ _PKG_CONFIG([$1], [variable="][$3]["], [$2]) |
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+ AS_VAR_COPY([$1], [pkg_cv_][$1]) |
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+ |
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+ AS_VAR_IF([$1], [""], [$5], [$4]) |
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+ ]) |
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+ ] |
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+) |
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+ |
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if test -z "${docdir}"; then
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docdir="\$(datadir)/doc/\$(PACKAGE_NAME)" |
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AC_SUBST([docdir]) |