nut-debian/m4/nut_check_libpowerman.m4

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dnl Check for LIBPOWERMAN compiler flags. On success, set nut_have_libpowerman="yes"
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dnl and set LIBPOWERMAN_CFLAGS and LIBPOWERMAN_LIBS. On failure, set
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dnl nut_have_libpowerman="no". This macro can be run multiple times, but will
dnl do the checking only once.
AC_DEFUN([NUT_CHECK_LIBPOWERMAN],
[
if test -z "${nut_have_libpowerman_seen}"; then
nut_have_libpowerman_seen=yes
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NUT_CHECK_PKGCONFIG
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dnl save CFLAGS and LIBS
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CFLAGS_ORIG="${CFLAGS}"
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LIBS_ORIG="${LIBS}"
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AS_IF([test x"$have_PKG_CONFIG" = xyes],
[AC_MSG_CHECKING([for LLNC libpowerman version via pkg-config])
POWERMAN_VERSION="`$PKG_CONFIG --silence-errors --modversion libpowerman 2>/dev/null`"
dnl Unlike other pkg-config enabled projects we use,
dnl libpowerman (at least on Debian) delivers an empty
dnl "Version:" tag in /usr/lib/pkgconfig/libpowerman.pc
dnl (and it is the only file in that dir, others going
dnl to /usr/lib/x86_64-linux-gnu/pkgconfig/ or similar
dnl for other architectures). Empty is not an error here!
if test "$?" != "0" ; then # -o -z "${POWERMAN_VERSION}"; then
POWERMAN_VERSION="none"
fi
AC_MSG_RESULT(['${POWERMAN_VERSION}' found])
],
[POWERMAN_VERSION="none"
AC_MSG_NOTICE([can not check LLNC libpowerman settings via pkg-config])
]
)
AS_IF([test x"$POWERMAN_VERSION" != xnone],
[CFLAGS="`$PKG_CONFIG --silence-errors --cflags libpowerman 2>/dev/null`"
LIBS="`$PKG_CONFIG --silence-errors --libs libpowerman 2>/dev/null`"
],
[CFLAGS=""
LIBS=""
]
)
AC_MSG_CHECKING([for libpowerman cflags])
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AC_ARG_WITH(powerman-includes,
AS_HELP_STRING([@<:@--with-powerman-includes=CFLAGS@:>@], [include flags for the libpowerman library]),
[
case "${withval}" in
yes|no)
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AC_MSG_ERROR([invalid option --with(out)-powerman-includes - see docs/configure.txt])
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;;
*)
CFLAGS="${withval}"
;;
esac
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], [])
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AC_MSG_RESULT([${CFLAGS}])
AC_MSG_CHECKING(for libpowerman libs)
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AC_ARG_WITH(powerman-libs,
AS_HELP_STRING([@<:@--with-powerman-libs=LIBS@:>@], [linker flags for the libpowerman library]),
[
case "${withval}" in
yes|no)
AC_MSG_ERROR(invalid option --with(out)-powerman-libs - see docs/configure.txt)
;;
*)
LIBS="${withval}"
;;
esac
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], [])
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AC_MSG_RESULT([${LIBS}])
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dnl check if libpowerman is usable
AC_CHECK_HEADERS(libpowerman.h, [nut_have_libpowerman=yes], [nut_have_libpowerman=no], [AC_INCLUDES_DEFAULT])
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AC_CHECK_FUNCS(pm_connect, [], [
dnl Some systems may just have libpowerman in their
dnl standard paths, but not the pkg-config data
AS_IF([test "${nut_have_libpowerman}" = "yes" && test "$POWERMAN_VERSION" = "none" && test -z "$LIBS"],
[AC_MSG_CHECKING([if libpowerman is just present in path])
LIBS="-L/usr/lib -L/usr/local/lib -lpowerman"
unset ac_cv_func_pm_connect || true
AC_CHECK_FUNCS(pm_connect, [], [nut_have_libpowerman=no])
AC_MSG_RESULT([${nut_have_libpowerman}])
], [nut_have_libpowerman=no]
)]
)
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if test "${nut_have_libpowerman}" = "yes"; then
LIBPOWERMAN_CFLAGS="${CFLAGS}"
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LIBPOWERMAN_LIBS="${LIBS}"
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fi
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dnl restore original CFLAGS and LIBS
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CFLAGS="${CFLAGS_ORIG}"
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LIBS="${LIBS_ORIG}"
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fi
])