-dnl Borrowed from Transcode (http://www.transcoding.org/cgi-bin/transcode)
-
-dnl PKG_INIT(rptfile, errfile)
-dnl
-AC_DEFUN([PKG_INIT],
-[
-pkg_err="no"
-pkg_err_file="pkg_err_file"
-pkg_rpt_file="pkg_rpt_file"
-
-if test x"$1" != x"" ; then
- pkg_rpt_file="$1"
-fi
-echo -n > $pkg_rpt_file
-
-if test x"$2" != x"" ; then
- pkg_err_file="$2"
-fi
-echo -n > $pkg_err_file
-])
-
-
-dnl PKG_ERROR(name, object, req-enable, pkg, url, [error message])
-AC_DEFUN([PKG_ERROR],
-[
-pkg_err="yes"
-this_pkg_err="yes"
-
-prob=""
-if test x"$3" = x"required" ; then
- prob="requirement failed"
-else
- prob="option '--enable-$1' failed"
-fi
-
-cat >> $pkg_err_file <<EOF
-ERROR: $prob: $6
-$2 can be found in the following packages:
- $4 $5
-
-EOF
-])
-
-
-dnl PKG_CHECK(pkg-name, def-enabled, var-name, pkgconfig-name, conf-script,
-dnl header, lib, symbol)
-dnl Test for pkg-name, and define var-name_CFLAGS and var-name_LIBS
-dnl and HAVE_var-name if found
-dnl
-dnl 1 name name of package; required (pkg-config name if applicable)
-dnl 2 req-enable enable by default, 'required', 'yes' or 'no'; required
-dnl 3 var-name name stub for variables, preferably uppercase; required
-dnl 4 conf-script name of "-config" script or 'no'
-dnl 5 header header file to check or 'none'
-dnl 6 lib library to check or 'none'
-dnl 7 symbol symbol from the library to check or ''
-dnl 8 pkg package (pkg-config name if applicable)
-dnl 9 url homepage for the package
-
-AC_DEFUN([PKG_CHECK],
-[
-if test x"$2" != x"required" ; then
- AC_MSG_CHECKING([whether $1 support is requested])
- AC_ARG_ENABLE($1,
- AC_HELP_STRING([--enable-$1],
- [build with $1 support ($2)]),
- [case "${enableval}" in
- yes) ;;
- no) ;;
- *) AC_MSG_ERROR(bad value ${enableval} for --enable-$1) ;;
- esac],
- enable_$1="$2")
- AC_MSG_RESULT($enable_$1)
-else
- enable_$1="yes"
-fi
-
-AC_ARG_WITH($1-prefix,
- AC_HELP_STRING([--with-$1-prefix=PFX],
- [prefix where $1 is installed (/usr)]),
- w_$1_p="$withval", w_$1_p="")
-
-AC_ARG_WITH($1-includes,
- AC_HELP_STRING([--with-$1-includes=DIR],
- [directory where $1 headers ($5) are installed (/usr/include)]),
- w_$1_i="$withval", w_$1_i="")
-
-AC_ARG_WITH($1-libs,
- AC_HELP_STRING([--with-$1-libs=DIR],
- [directory where $1 libararies (lib$6.so) are installed (/usr/lib)]),
- w_$1_l="$withval", w_$1_l="")
-
-have_$1="no"
-this_pkg_err="no"
-
-if test x"$enable_$1" = x"yes" ; then
-
- dnl pkg-config
-
- pkg_config_$1="no"
- AC_MSG_CHECKING([for pkgconfig support for $1])
- if test x"$PKG_CONFIG" != x"no" ; then
- if $PKG_CONFIG $8 --exists ; then
- pkg_config_$1="yes"
- fi
- fi
- AC_MSG_RESULT($pkg_config_$1)
-
- dnl *-config
-
- if test x"$4" != x"no" ; then
- if test x"$w_$1_p" != x"" ; then
- if test -x $w_$1_p/bin/$4 ; then
- $1_config="$w_$1_p/bin/$4"
- fi
- fi
- AC_PATH_PROG($1_config, $4, no)
- else
- $1_config="no"
- fi
-
- # get and test the _CFLAGS
-
- AC_MSG_CHECKING([how to determine $3_CFLAGS])
- if test x"$w_$1_i" != x"" ; then
- $1_ii="-I$w_$1_i"
- AC_MSG_RESULT(user)
- else
- if test x"$pkg_config_$1" != x"no" ; then
- $1_ii="`$PKG_CONFIG $8 --cflags`"
- AC_MSG_RESULT(pkg-config)
- else
- if test x"$$1_config" != x"no" ; then
- $1_ii="`$$1_config --cflags`"
- AC_MSG_RESULT($$1_config)
- else
- if test x"$w_$1_p" != x"" ; then
- $1_ii="-I$w_$1_p/include"
- AC_MSG_RESULT(prefix)
- else
- $1_ii="-I/usr/include"
- AC_MSG_RESULT(default)
- fi
- fi
- fi
- fi
- ipaths="" ; xi=""
- for i in $$1_ii ; do
- case $i in
- -I*) ipaths="$ipaths $i" ;;
- *) xi="$xi $i" ;;
- esac
- done
- $1_ii="$ipaths"
- $1_ii="`echo $$1_ii | sed -e 's/ */ /g'`"
- $3_EXTRA_CFLAGS="$$3_EXTRA_CFLAGS $xi"
- $3_EXTRA_CFLAGS="`echo $$3_EXTRA_CFLAGS | sed -e 's/ */ /g'`"
-
- if test x"$5" != x"none" ; then
- save_CPPFLAGS="$CPPFLAGS"
- CPPFLAGS="$CPPFLAGS $$1_ii"
- AC_CHECK_HEADER([$5],
- [$3_CFLAGS="$$1_ii"],
- [PKG_ERROR($1, $5, $2, $8, $9, [cannot compile $5])])
- CPPFLAGS="$save_CPPFLAGS"
- fi
-
- # get and test the _LIBS
-
- AC_MSG_CHECKING([how to determine $3_LIBS])
- if test x"$w_$1_l" != x"" ; then
- $1_ll="-L$w_$1_l"
- AC_MSG_RESULT(user)
- else
- if test x"$pkg_config_$1" != x"no" ; then
- $1_ll="`$PKG_CONFIG $8 --libs`"
- AC_MSG_RESULT(pkg-config)
- else
- if test x"$$1_config" != x"no" ; then
- $1_ll="`$$1_config --libs`"
- AC_MSG_RESULT($$1_config)
- else
- if test x"$w_$1_p" != x"" ; then
- $1_ll="-L$w_$1_p${deflib}"
- AC_MSG_RESULT(prefix)
- else
- $1_ll="-L/usr${deflib}"
- AC_MSG_RESULT(default)
- fi
- fi
- fi
- fi
- lpaths="" ; xlibs="" ; xlf=""
- for l in $$1_ll ; do
- case $l in
- -L*) lpaths="$lpaths $l" ;;
- -l*) test x"$l" != x"-l$6" && xlibs="$xlibs $l" ;;
- *) xlf="$xlf $l" ;;
- esac
- done
- $1_ll="$lpaths"
- $1_ll="`echo $$1_ll | sed -e 's/ */ /g'`"
- xl=""
- for i in $xlibs $xlf ; do
- echo " $$3_EXTRA_LIBS " | grep -vq " $i " && xl="$xl $i"
- done
- $3_EXTRA_LIBS="$$3_EXTRA_LIBS $xl"
- $3_EXTRA_LIBS="`echo $$3_EXTRA_LIBS | sed -e 's/ */ /g'`"
-
- if test x"$6" != x"none" ; then
- save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS $$1_ll"
- AC_CHECK_LIB([$6], [$7],
- [$3_LIBS="$$1_ll -l$6 $$3_EXTRA_LIBS"],
- [PKG_ERROR($1, lib$6, $2, $8, $9, [cannot link against lib$6])],
- [$$3_EXTRA_LIBS])
- LDFLAGS="$save_LDFLAGS"
- fi
-
- if test x"$this_pkg_err" = x"no" ; then
- have_$1="yes"
- fi
-
-else
- $3_CFLAGS=""
- $3_LIBS=""
-fi
-])
-