[Olena-patches] [PATCH 12/27] Add an Automake macro OLN_WITH_LIB to factor common code.

* m4/oln-with-lib.m4: New. --- ChangeLog | 6 ++++ m4/oln-with-lib.m4 | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 84 insertions(+), 0 deletions(-) create mode 100644 m4/oln-with-lib.m4 diff --git a/ChangeLog b/ChangeLog index 1b0d496..46cd626 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,11 @@ 2009-06-03 Roland Levillain &lt;roland(a)lrde.epita.fr&gt; + Add an Automake macro OLN_WITH_LIB to factor common code. + + * m4/oln-with-lib.m4: New. + +2009-06-02 Roland Levillain &lt;roland(a)lrde.epita.fr&gt; + Disable support for FreeImagePlus in Olena. * configure.ac: Here. diff --git a/m4/oln-with-lib.m4 b/m4/oln-with-lib.m4 new file mode 100644 index 0000000..16997c9 --- /dev/null +++ b/m4/oln-with-lib.m4 @@ -0,0 +1,78 @@ +# -*- Autoconf -*- + +# OLN_WITH_LIB(PACKAGE, HEADER, LIBRARY, [SHELL_NAME], [CPP_NAME]) +# ---------------------------------------------------------------- +# Checks whether library PACKAGE is available from C++ programs. +# HEADER and LIBRARY are respectively a header and the library name +# (object) that are checked to assess the usability of the library. +# SHELL_NAME is a name used in shell variables (preferably in lower +# case), while CPP_NAME is used in the name of C++ preprocessor macros +# and flags (preferably in upper case). +# +# If they are not given, SHELL_NAME defaults to m4_tolower([LIBRARY]) +# and CPP_NAME defaults to m4_toupper([LIBRARY]). +# +# This macro sets the shell variable oln_have_`SHELL_NAME' to `yes' if +# the library is found and if it is working (and to `no' otherwise), +# and defines a CPP macro and an Automake conditional both named +# HAVE_`CPP_NAME'. It also sets `CPP_NAME'_CXXFLAGS and +# `CPP_NAME'_LDFLAGS. +# +# Examples of use: +# +# OLN_WITH_LIB([FreeImagePlus], [FreeImagePlus.h], [freeimageplus]) +# OLN_WITH_LIB([CFITSIO], [fitsio.h], [cfitsio]) +# OLN_WITH_LIB([Zlib], [zlib.h], [z], [zlib], [ZLIB]) +# +AC_DEFUN([OLN_WITH_LIB], +[dnl Do some sanity checking of the arguments. +m4_if([$1], , [AC_FATAL([$0: missing argument 1])])dnl +m4_if([$2], , [AC_FATAL([$0: missing argument 2])])dnl +m4_if([$3], , [AC_FATAL([$0: missing argument 3])])dnl +_OLN_WITH_LIB([$1], [$2], [$3],dnl +dnl Process optional arguments. +m4_default([$4], m4_tolower([$3])),dnl +m4_default([$5], m4_toupper([$3])))dnl +])# OLN_WITH_LIB + + +# _OLN_WITH_LIB(PACKAGE, HEADER, LIBRARY, SHELL_NAME, CPP_NAME) +# ------------------------------------------------------------- +# Actual implementation of OLN_WITH_LIB. +AC_DEFUN([_OLN_WITH_LIB], +[dnl + AC_REQUIRE([AC_PROG_CXX]) + AC_LANG_PUSH([C++]) + AC_ARG_WITH([$4], + [AC_HELP_STRING([--with-$4@<:@=DIR@:>@], + [use $1 (DIR = prefix for $1 installation)])]) + $5_CXXFLAGS='' + $5_LDFLAGS='' + if test "x$with_$4" != xno; then + if test -n "$with_$4"; then + $5_CXXFLAGS="-I${with_$4}/include" + $5_LDFLAGS="-L${with_$4}/lib" + fi + oln_save_CXXFLAGS=$CXXFLAGS + oln_save_LDFLAGS=$LDFLAGS + CXXFLAGS="$CXXFLAGS $$5_CXXFLAGS" + LDFLAGS="$LDFLAGS $$5_LDFLAGS" + oln_have_$4=no + AC_CHECK_HEADER([$2], + [AC_CHECK_LIB([$3], + [main], + [oln_have_$4=yes + $5_LDFLAGS="$$5_LDFLAGS -l$3" + AC_DEFINE([HAVE_$5], 1, [Define to 1 if we can use $1]) + ] + )] + ) + CXXFLAGS=$oln_save_CXXFLAGS + LDFLAGS=$oln_save_LDFLAGS + TOOLS_LDFLAGS="$TOOLS_LDFLAGS $$5_LDFLAGS" + fi + AC_SUBST([$5_CXXFLAGS]) + AC_SUBST([$5_LDFLAGS]) + AM_CONDITIONAL([HAVE_$5], [test x$oln_have_$4 = xyes]) + AC_LANG_POP([C++]) +])# _OLN_WITH_LIB -- 1.6.1.2