nut-debian/m4/nut_check_libgd.m4
2022-07-10 09:23:45 +02:00

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dnl Check for LIBGD compiler flags. On success, set nut_have_libgd="yes"
dnl and set LIBGD_CFLAGS and LIBGD_LDFLAGS. On failure, set
dnl nut_have_libgd="no". This macro can be run multiple times, but will
dnl do the checking only once.
AC_DEFUN([NUT_CHECK_LIBGD],
[
if test -z "${nut_have_libgd_seen}"; then
nut_have_libgd_seen=yes
NUT_CHECK_PKGCONFIG
CFLAGS_ORIG="${CFLAGS}"
LDFLAGS_ORIG="${LDFLAGS}"
LIBS_ORIG="${LIBS}"
CFLAGS=""
LDFLAGS=""
LIBS=""
AS_IF([test x"$have_PKG_CONFIG" = xyes],
[AC_MSG_CHECKING(for gd version via pkg-config)
GD_VERSION="`$PKG_CONFIG --silence-errors --modversion gdlib 2>/dev/null`"
if test "$?" != "0" -o -z "${GD_VERSION}"; then
GD_VERSION="none"
fi
AC_MSG_RESULT(${GD_VERSION} found)
],
[GD_VERSION="none"
AC_MSG_NOTICE([can not check libgd settings via pkg-config])
]
)
AS_IF([test x"$GD_VERSION" != xnone],
[CFLAGS="`$PKG_CONFIG --silence-errors --cflags gdlib 2>/dev/null`"
LIBS="`$PKG_CONFIG --silence-errors --libs gdlib 2>/dev/null`"
],
[dnl Initial defaults. These are only used if gdlib-config is
dnl unusable and the user fails to pass better values in --with
dnl arguments
CFLAGS=""
LDFLAGS="-L/usr/X11R6/lib"
LIBS="-lgd -lpng -lz -ljpeg -lfreetype -lm -lXpm -lX11"
dnl By default seek in PATH
AC_PATH_PROGS([GDLIB_CONFIG], [gdlib-config], [none])
AC_ARG_WITH(gdlib-config,
AS_HELP_STRING([@<:@--with-gdlib-config=/path/to/gdlib-config@:>@],
[path to program that reports GDLIB configuration]),
[
case "${withval}" in
"") ;;
yes|no)
AC_MSG_ERROR(invalid option --with(out)-gdlib-config - see docs/configure.txt)
;;
*)
GDLIB_CONFIG="${withval}"
;;
esac
])
AS_IF([test x"$GDLIB_CONFIG" != xnone],
[AC_MSG_CHECKING(for gd version via ${GDLIB_CONFIG})
GD_VERSION="`${GDLIB_CONFIG} --version 2>/dev/null`"
if test "$?" != "0" -o -z "${GD_VERSION}"; then
GD_VERSION="none"
fi
AC_MSG_RESULT(${GD_VERSION} found)
], [GD_VERSION="none"]
)
case "${GD_VERSION}" in
none)
;;
2.0.5 | 2.0.6 | 2.0.7)
AC_MSG_WARN([[gd ${GD_VERSION} detected, unable to use ${GDLIB_CONFIG} script]])
AC_MSG_WARN([[If gd detection fails, upgrade gd or use --with-gd-includes and --with-gd-libs]])
;;
*)
CFLAGS="`${GDLIB_CONFIG} --includes 2>/dev/null`"
LDFLAGS="`${GDLIB_CONFIG} --ldflags 2>/dev/null`"
LIBS="`${GDLIB_CONFIG} --libs 2>/dev/null`"
;;
esac
]
)
dnl Now allow overriding gd settings if the user knows best
AC_MSG_CHECKING(for gd include flags)
AC_ARG_WITH(gd-includes,
AS_HELP_STRING([@<:@--with-gd-includes=CFLAGS@:>@], [include flags for the gd library]),
[
case "${withval}" in
yes|no)
AC_MSG_ERROR(invalid option --with(out)-gd-includes - see docs/configure.txt)
;;
*)
CFLAGS="${withval}"
;;
esac
], [])
AC_MSG_RESULT([${CFLAGS}])
AC_MSG_CHECKING(for gd library flags)
AC_ARG_WITH(gd-libs,
AS_HELP_STRING([@<:@--with-gd-libs=LDFLAGS@:>@], [linker flags for the gd library]),
[
case "${withval}" in
yes|no)
AC_MSG_ERROR(invalid option --with(out)-gd-libs - see docs/configure.txt)
;;
*)
LDFLAGS="${withval}"
LIBS=""
;;
esac
], [])
AC_MSG_RESULT([${LDFLAGS} ${LIBS}])
dnl check if gd is usable
AC_CHECK_HEADERS(gd.h gdfontmb.h, [nut_have_libgd=yes], [nut_have_libgd=no], [AC_INCLUDES_DEFAULT])
AC_SEARCH_LIBS(gdImagePng, gd, [], [
dnl If using pkg-config, query additionally for Libs.private
dnl to pull -L/usr/X11R6/lib or whatever current OS wants
AC_MSG_CHECKING([for more gd library flags])
AS_IF([test -n "${with_gd_libs}" || test x"$have_PKG_CONFIG" != xyes], [nut_have_libgd=no], [
_LIBS_PRIVATE="`$PKG_CONFIG --silence-errors --libs gdlib --static 2>/dev/null`"
AS_IF([test -z "${_LIBS_PRIVATE}"], [nut_have_libgd=no], [
AC_MSG_CHECKING([with gdlib.pc Libs.private])
LDFLAGS="$LDFLAGS $_LIBS_PRIVATE"
unset ac_cv_search_gdImagePng
AC_SEARCH_LIBS(gdImagePng, gd, [], [nut_have_libgd=no])
])
unset _LIBS_PRIVATE
])
])
if test "${nut_have_libgd}" = "yes"; then
AC_DEFINE(HAVE_LIBGD, 1, [Define if you have Boutell's libgd installed])
LIBGD_CFLAGS="${CFLAGS}"
LIBGD_LDFLAGS="${LDFLAGS} ${LIBS}"
fi
dnl put back the original versions
CFLAGS="${CFLAGS_ORIG}"
LDFLAGS="${LDFLAGS_ORIG}"
LIBS="${LIBS_ORIG}"
fi
])