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asterisk/autoconf/ast_ext_lib.m4

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# Helper function to setup variables for a package.
# $1 -> the package name. Used in configure.ac and also as a prefix
# for the variables ($1_DIR, $1_INCLUDE, $1_LIB) in makeopts
# $3 -> option name, used in --with-$3 or --without-$3 when calling configure.
# $2 and $4 are just text describing the package (short and long form)
# AST_EXT_LIB_SETUP([package], [short description], [configure option name], [long description])
AC_DEFUN([AST_EXT_LIB_SETUP],
[
$1_DESCRIP="$2"
$1_OPTION="$3"
PBX_$1=0
AC_ARG_WITH([$3], AS_HELP_STRING([--with-$3=PATH],[use $2 files in PATH$4]),
[
case ${withval} in
n|no)
USE_$1=no
# -1 is a magic value used by menuselect to know that the package
# was disabled, other than 'not found'
PBX_$1=-1
;;
y|ye|yes)
ac_mandatory_list="${ac_mandatory_list} $1"
;;
*)
$1_DIR="${withval}"
ac_mandatory_list="${ac_mandatory_list} $1"
;;
esac
])
AH_TEMPLATE(m4_bpatsubst([[HAVE_$1]], [(.*)]), [Define to 1 if you have the $2 library.])
AC_SUBST([$1_LIB])
AC_SUBST([$1_INCLUDE])
AC_SUBST([$1_DIR])
AC_SUBST([PBX_$1])
])
# AST_OPTION_ONLY([option name], [option variable], [option description], [default value])
AC_DEFUN([AST_OPTION_ONLY],
[
AC_ARG_WITH([$1], AS_HELP_STRING([--with-$1=PATH], [use $3 in PATH]),
[
case ${withval} in
n|no)
unset $2
;;
*)
if test "x${withval}" = "x"; then
m4_ifval($4, [$2="$4"], [:])
else
$2="${withval}"
fi
;;
esac
],
[m4_ifval($4, [$2="$4"], [:])])
AC_SUBST($2)
])
# Setup required dependent package
# AST_EXT_LIB_SETUP_DEPENDENT([dependent package symbol name], [dependent package friendly name], [master package symbol name], [master package name])
AC_DEFUN([AST_EXT_LIB_SETUP_DEPENDENT],
[
$1_DESCRIP="$2"
m4_ifval([$4], [$1_OPTION=$4])
m4_ifval([$3], [
for i in ${ac_mandatory_list}; do
if test "x$3" = "x$i"; then
ac_mandatory_list="${ac_mandatory_list} $1"
break
fi
done
$1_DIR=${$3_DIR}
])
PBX_$1=0
AH_TEMPLATE(m4_bpatsubst([[HAVE_$1]], [(.*)]), [Define to 1 if you have the $2 library.])
AC_SUBST([$1_LIB])
AC_SUBST([$1_INCLUDE])
AC_SUBST([$1_DIR])
AC_SUBST([PBX_$1])
])
# Setup optional dependent package
# AST_EXT_LIB_SETUP_OPTIONAL([optional package symbol name], [optional package friendly name], [master package symbol name], [master package name])
AC_DEFUN([AST_EXT_LIB_SETUP_OPTIONAL],
[
$1_DESCRIP="$2"
m4_ifval([$4], [$1_OPTION=$4])
m4_ifval([$3], [$1_DIR=${$3_DIR}
])
PBX_$1=0
AH_TEMPLATE(m4_bpatsubst([[HAVE_$1]], [(.*)]), [Define to 1 if $3 has the $2 feature.])
AC_SUBST([$1_LIB])
AC_SUBST([$1_INCLUDE])
AC_SUBST([$1_DIR])
AC_SUBST([PBX_$1])
])
# Check for existence of a given package ($1), either looking up a function
# in a library, or, if no function is supplied, only check for the
# existence of the header files.
# AST_EXT_LIB_CHECK([package], [library], [function], [header],
# [extra libs], [extra cflags], [version])
AC_DEFUN([AST_EXT_LIB_CHECK],
[
if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then
pbxlibdir=""
# if --with-$1=DIR has been specified, use it.
if test "x${$1_DIR}" != "x"; then
if test -d ${$1_DIR}/lib; then
pbxlibdir="-L${$1_DIR}/lib"
else
pbxlibdir="-L${$1_DIR}"
fi
fi
m4_ifval([$3], [
ast_ext_lib_check_save_CFLAGS="${CFLAGS}"
CFLAGS="${CFLAGS} $6"
AC_CHECK_LIB([$2], [$3], [AST_$1_FOUND=yes], [AST_$1_FOUND=no], [${pbxlibdir} $5])
CFLAGS="${ast_ext_lib_check_save_CFLAGS}"
], [
# empty lib, assume only headers
AST_$1_FOUND=yes
])
# now check for the header.
if test "${AST_$1_FOUND}" = "yes"; then
$1_LIB="${pbxlibdir} -l$2 $5"
# if --with-$1=DIR has been specified, use it.
if test "x${$1_DIR}" != "x"; then
$1_INCLUDE="-I${$1_DIR}/include"
fi
$1_INCLUDE="${$1_INCLUDE} $6"
m4_ifval([$4], [
# check for the header
ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
AC_CHECK_HEADER([$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0])
CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
], [
# no header, assume found
$1_HEADER_FOUND="1"
])
if test "x${$1_HEADER_FOUND}" = "x0" ; then
$1_LIB=""
$1_INCLUDE=""
else
m4_ifval([$3], [], [
# only checking headers -> no library
$1_LIB=""
])
PBX_$1=1
cat >>confdefs.h <<_ACEOF
[@%:@define] HAVE_$1 1
_ACEOF
m4_ifval([$7], [
cat >>confdefs.h <<_ACEOF
[@%:@define] HAVE_$1_VERSION $7
_ACEOF
])
fi
fi
fi
m4_ifval([$7], [AH_TEMPLATE(m4_bpatsubst([[HAVE_$1_VERSION]], [(.*)]), [Define to the version of the $2 library.])])
])
# Check if the previously discovered library can be dynamically linked.
#
# AST_EXT_LIB_CHECK_SHARED([package], [library], [function], [header],
# [extra libs], [extra cflags], [action-if-true], [action-if-false])
AC_DEFUN([AST_EXT_LIB_CHECK_SHARED],
[
if test "x${PBX_$1}" = "x1"; then
ast_ext_lib_check_shared_saved_libs="${LIBS}"
ast_ext_lib_check_shared_saved_ldflags="${LDFLAGS}"
ast_ext_lib_check_shared_saved_cflags="${CFLAGS}"
LIBS="${LIBS} ${$1_LIB} $5"
LDFLAGS="${LDFLAGS} -shared -fPIC"
CFLAGS="${CFLAGS} ${$1_INCLUDE} $6"
AC_MSG_CHECKING(for the ability of -l$2 to be linked in a shared object)
AC_LINK_IFELSE(
[
AC_LANG_PROGRAM(
[#include <$4>],
[$3();]
)
],
[
AC_MSG_RESULT(yes)
$7
],
[
AC_MSG_RESULT(no)
$8
]
)
CFLAGS="${ast_ext_lib_check_shared_saved_cflags}"
LDFLAGS="${ast_ext_lib_check_shared_saved_ldflags}"
LIBS="${ast_ext_lib_check_shared_saved_libs}"
fi
])
# Check for existence of a given package ($1), either looking up a function
# in a library, or, if no function is supplied, only check for the
# existence of the header files. Then compile, link and run the supplied
# code fragment to make the final determination.
# AST_EXT_LIB_EXTRA_CHECK([package], [library], [function], [header],
# [extra libs], [extra cflags], [AC_LANG_PROGRAM(extra check code...)],
# ["checking for" display string], ["HAVE_package_" extra variable to set])
AC_DEFUN([AST_EXT_LIB_EXTRA_CHECK],
[
if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then
pbxlibdir=""
# if --with-$1=DIR has been specified, use it.
if test "x${$1_DIR}" != "x"; then
if test -d ${$1_DIR}/lib; then
pbxlibdir="-L${$1_DIR}/lib"
else
pbxlibdir="-L${$1_DIR}"
fi
fi
m4_ifval([$3], [
ast_ext_lib_check_save_CFLAGS="${CFLAGS}"
CFLAGS="${CFLAGS} $6"
AC_CHECK_LIB([$2], [$3], [AST_$1_FOUND=yes], [AST_$1_FOUND=no], [${pbxlibdir} $5])
CFLAGS="${ast_ext_lib_check_save_CFLAGS}"
], [
# empty lib, assume only headers
AST_$1_FOUND=yes
])
# now check for the header.
if test "${AST_$1_FOUND}" = "yes"; then
$1_LIB="${pbxlibdir} -l$2 $5"
# if --with-$1=DIR has been specified, use it.
if test "x${$1_DIR}" != "x"; then
$1_INCLUDE="-I${$1_DIR}/include"
fi
$1_INCLUDE="${$1_INCLUDE} $6"
m4_ifval([$4], [
# check for the header
ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
AC_CHECK_HEADER([$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0])
CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
], [
# no header, assume found
$1_HEADER_FOUND="1"
])
fi
# Validate the package with the supplied code.
if test "x${$1_HEADER_FOUND}" = "x1" ; then
AC_MSG_CHECKING(for $8)
ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
ast_ext_lib_check_saved_LIBS="${LIBS}"
LIBS="${$1_LIB}"
AC_LINK_IFELSE(
[$7],
[
if test "x${cross_compiling}" = "xyes" ; then
$1_VALIDATED="1"
AC_MSG_RESULT([yes (guessed for cross-compile)])
else
./conftest$EXEEXT
if test $? -eq 0 ; then
$1_VALIDATED="1"
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
fi
],
[
AC_MSG_RESULT(no)
]
)
CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
LIBS="${ast_ext_lib_check_saved_LIBS}"
fi
if test "x${$1_VALIDATED}" = "x1" ; then
m4_ifval([$3], [], [
# only checking headers -> no library
$1_LIB=""
])
PBX_$1=1
cat >>confdefs.h <<_ACEOF
[@%:@define] HAVE_$1 1
_ACEOF
m4_ifval([$9], [
cat >>confdefs.h <<_ACEOF
[@%:@define] HAVE_$1_$9 1
_ACEOF
])
else
$1_LIB=""
$1_INCLUDE=""
fi
fi
m4_ifval([$9], [AH_TEMPLATE(m4_bpatsubst([[HAVE_$1_$9]], [(.*)]), [Define if $8])])
])
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