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1.1 root 1: # $Id: modules,v 1.1 2003/05/16 21:48:04 fredette Exp $
2:
3: ## This is an automake include file.
4:
5: # Copyright (c) 2003 Matt Fredette
6: # All rights reserved.
7: #
8: # Redistribution and use in source and binary forms, with or without
9: # modification, are permitted provided that the following conditions
10: # are met:
11: # 1. Redistributions of source code must retain the above copyright
12: # notice, this list of conditions and the following disclaimer.
13: # 2. Redistributions in binary form must reproduce the above copyright
14: # notice, this list of conditions and the following disclaimer in the
15: # documentation and/or other materials provided with the distribution.
16: # 3. All advertising materials mentioning features or use of this software
17: # must display the following acknowledgement:
18: # This product includes software developed by Matt Fredette.
19: # 4. The name of the author may not be used to endorse or promote products
20: # derived from this software without specific prior written permission.
21: #
22: # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24: # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25: # DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
26: # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27: # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28: # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
30: # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31: # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32: # POSSIBILITY OF SUCH DAMAGE.
33:
34: # this automake include file must be included in all directories that
35: # build modules. it updates the modules index that will be installed
36: # along with all of the modules, and also handles some static building
37: # details. this is done with an all-local target:
38: all-local:
39: #
40: # first, all source files in the current directory are searched for
41: # element "new" function declarations. these declarations provide
42: # enough information to determine the published module name, the
43: # libtool module name, and "submodule" name. this information is
44: # appended to a tme-plugins.txt file, which will be installed in
45: # $(pkglibdir).
46: #
47: # the choice of $(top_builddir)/tme/tme-plugins.txt is important.
48: # when debugging, the person doing the debugging is expected to have
49: # the good sense to set LTDL_LIBRARY_PATH to $(top_builddir), so
50: # module.c will correctly use the uninstalled plugins list for all
51: # "tme/" modules.
52: #
53: # this is abuse of the $(top_builddir)/tme directory, yes, since
54: # this directory was originally just for include files and to make
55: # #include <tme/FOO.h> work right when building:
56: @echo updating tme modules list..
57: @grep TME_ELEMENT_NEW_DECL $(srcdir)/*.c | \
58: sed -e 's%.*TME_ELEMENT_NEW_DECL(\(.*\)).*%\1%' \
59: >> $(top_builddir)/tme/tme-plugins.txt
60: @grep TME_ELEMENT_SUB_NEW_DECL $(srcdir)/*.c | \
61: sed -e 's%.*TME_ELEMENT_SUB_NEW_DECL(\(.*\),\(.*\)).*%\1_\2 \1 \2%' \
62: >> $(top_builddir)/tme/tme-plugins.txt
63: @grep TME_ELEMENT_X_NEW_DECL $(srcdir)/*.c | \
64: sed -e 's%.*TME_ELEMENT_X_NEW_DECL(\(.*\),\(.*\),\(.*\)).*%\1\3 \1\2 \3%' \
65: >> $(top_builddir)/tme/tme-plugins.txt
66: #
67: # next, when building statically, either for debugging purposes or
68: # because we're on a weak platform, we have to use libtool's "preopen"
69: # mechanism.
70: #
71: # this means at least specifying all of the modules that could
72: # potentially be lt_dlopen'ed on any main program's link command line,
73: # using libtool's -dlpreopen option.
74: #
75: # so we append suitable -dlpreopen options for all modules built in
76: # this directory to a file, in this case
77: # $(top_builddir)/tme-preopen.txt. when building statically,
78: # configure.in will then substitute @TME_PREOPEN@ with:
79: #
80: # `cat $(top_builddir)/tme-preopen.txt`
81: #
82: # else it will substitute the empty string. when linking programs,
83: # @TME_PREOPEN@ is then used on the program's link command line.
84: #
85: # additionally, libtool, at least through version 1.5, has a
86: # limitation in that the pseudo-library (the .la file) must be present
87: # even for a preloaded module. if we aren't debugging, everything is
88: # installed, so this is not a problem.
89: #
90: # however, if we are debugging, nothing is installed, so we have to do
91: # something to make sure that the .la files can be found.
92: #
93: # the person doing the debugging is already expected to set
94: # LTDL_LIBRARY_PATH to the top of the build directory, so that
95: # module.c can find the uninstalled tme-plugins.txt file, and libtool
96: # will want to look in this directory for .la files, so we simply copy
97: # all of the .la files into that same directory:
98: @if test "x$(pkglib_LTLIBRARIES)" != x; then \
99: for module in $(pkglib_LTLIBRARIES); do \
100: echo $$module ; \
101: echo -dlpreopen ../$(subdir)/$$module >> $(top_builddir)/tme-preopen.txt ; \
102: cp $$module $(top_builddir)/tme ; \
103: done ; \
104: fi
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