source: trunk/doc/build_tool.doxygen @ 1932

Last change on this file since 1932 was 1932, checked in by Peter, 13 years ago

add snippet about environment variable YAT_CBLAS_LIB

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1// $Id: build_tool.doxygen 1932 2009-04-30 21:04:23Z peter $
2//
3// Copyright (C) 2008 Jari Häkkinen, Peter Johansson
4// Copyright (C) 2009 Peter Johansson
5//
6// This file is part of the yat library, http://dev.thep.lu.se/yat
7//
8// The yat library is free software; you can redistribute it and/or
9// modify it under the terms of the GNU General Public License as
10// published by the Free Software Foundation; either version 3 of the
11// License, or (at your option) any later version.
12//
13// The yat library is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16// General Public License for more details.
17//
18// You should have received a copy of the GNU General Public License
19// along with yat. If not, see <http://www.gnu.org/licenses/>.
20
21
22/**
23\page build_tool Build Tools
24
25\section yat-config
26
27The \c yat-config script provides information on the local version of
28the library. For instance the following command shows that yat was
29installed at prefix \c `/usr/local'
30
31\verbatim
32 #> yat-config --prefix
33/usr/local
34\endverbatim
35
36This information can then be used in a Makefile, for example, as follows:
37
38\verbatim
39BIN=foo
40SRC=$(BIN).cc
41OBJECTS=$(SRC:.cc=.o)
42
43CPPFLAGS+=`yat-config --cppflags`
44CXXFLAGS+=`yat-config --cxxflags`
45LDFLAGS+=`yat-config --ldflags`
46LIBS+=`yat-config --libs`
47
48all: $(BIN)
49
50$(BIN): $(OBJECTS)
51  $(CXX) $(LDFLAGS) $(OBJECTS) -o $(BIN) $(LIBS)
52
53.cc.o:
54  $(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $< -o $@
55
56clean:; rm -f $(OBJECTS) $(BIN)
57\endverbatim
58
59From yat 0.6 an alternative \c CBLAS library can be specified using \c
60YAT_CBLAS_LIB environment variable. By default the \c CBLAS library
61detected during configuration of yat is used.
62
63For further information on yat-config use \c `yat-config \c --help'
64
65\since New in yat 0.5
66
67\section macro Autoconf Macro
68
69For applications using autoconf there is a macro available in \c
70yat.m4. The macro can be called from your \c configure.ac:
71
72\verbatim
73   YAT_CHECK_YAT([minimum-version], [action-if-found],[action-if-not-found])
74\endverbatim
75
76The argument minimum-version should be the number (\c MAJOR.MINOR or
77\c MAJOR.MINOR.PATCH) of the version you require. If yat header files
78and library are not found or the version is not new enough, macro will
79complain and execute shell command \c action-if-not-found. A suitable
80\c action-if-not-found could be
81
82\verbatim
83   AC_MSG_ERROR([could not find required version of yat])
84\endverbatim
85
86If the test is successful, \c HAVE_YAT is defined and \c
87action-if-found is executed. The test calls \c yat-config and sets
88variables \c YAT_CPPFLAGS, \c YAT_CXXFLAGS, \c YAT_LDFLAGS, \c
89YAT_LIBS, and \c YAT_LA_FILE. These flags can then be used in the \c
90Makefile.am. For instance:
91
92\verbatim
93   AM_CPPFLAGS = $(YAT_CPPFLAGS)
94   AM_CXXFLAGS = $(YAT_CXXFLAGS)
95   AM_LDFLAGS = $(YAT_LDFLAGS)
96   LDADD = $(YAT_LIBS)
97\endverbatim
98
99or when using libtool you could use \c YAT_LA_FILE:
100
101\verbatim
102   AM_CPPFLAGS = $(YAT_CPPFLAGS)
103   AM_CXXFLAGS = $(YAT_CXXFLAGS)
104   LDADD = $(YAT_LA_FILE)
105\endverbatim
106
107\note this macro assumes that \c yat-config has been installed; \c
108      yat-config was introduced in yat \b 0.5 and consequently this macro
109      \b does \b not work with yat \b 0.4.x (or older).
110
111*/
112
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