| |
5.13 Erlang Libraries
The following macros check for an installation of Erlang/OTP, and for the
presence of certain Erlang libraries. All those macros require the
configuration of an Erlang interpreter and an Erlang compiler
(see Erlang Compiler and Interpreter).
— Macro: AC_ERLANG_SUBST_ROOT_DIR
Set the output variable ERLANG_ROOT_DIR to the path to the base directory
in which Erlang/OTP is installed (as returned by Erlang's code:root_dir/0
function). The result of this test is cached if caching is enabled when running
configure.
— Macro: AC_ERLANG_SUBST_LIB_DIR
Set the output variable ERLANG_LIB_DIR to the path of the library
directory of Erlang/OTP (as returned by Erlang's
code:lib_dir/0 function), which subdirectories each contain an installed
Erlang/OTP library. The result of this test is cached if caching is enabled
when running configure.
— Macro: AC_ERLANG_CHECK_LIB ( library, [action-if-found], [action-if-not-found])
Test whether the Erlang/OTP library library is installed by calling
Erlang's code:lib_dir/1 function. The result of this test is cached if
caching is enabled when running configure. action-if-found is a
list of shell commands to run if the library is installed;
action-if-not-found is a list of shell commands to run if it is not.
Additionally, if the library is installed, the output variable
‘ERLANG_LIB_DIR_library’ is set to the path to the library
installation directory. For example, to check if library stdlib is
installed:
AC_ERLANG_CHECK_LIB([stdlib],
[echo "stdlib is installed in $ERLANG_LIB_DIR_stdlib"],
[AC_MSG_ERROR([stdlib was not found!])])
In addition to the above macros, which test installed Erlang libraries, the
following macros determine the paths to the directories into which newly built
Erlang libraries are to be installed:
— Macro: AC_ERLANG_SUBST_INSTALL_LIB_DIR
Set the ERLANG_INSTALL_LIB_DIR output variable to the directory into
which every built Erlang library should be installed in a separate subdirectory.
If this variable is not set in the environment when configure runs,
its default value is $ERLANG_LIB_DIR, which value is set by the
AC_ERLANG_SUBST_LIB_DIR macro.
— Macro: AC_ERLANG_SUBST_INSTALL_LIB_SUBDIR ( library, version)
Set the ‘ERLANG_INSTALL_LIB_DIR_library’ output variable to the
directory into which the built Erlang library library version
version should be installed. If this variable is not set in the
environment when configure runs, its default value is
‘$ERLANG_INSTALL_LIB_DIR/library-version’, the value of the
ERLANG_INSTALL_LIB_DIR variable being set by the
AC_ERLANG_SUBST_INSTALL_LIB_DIR macro.
|
|
