135 lines
4.1 KiB
Plaintext
135 lines
4.1 KiB
Plaintext
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AC_DEFUN([AM_PATH_PKGCONFIG],
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[
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dnl sets cflags and ldflags
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dnl TEST_CXXFLAGS and TEST_LDFLAGS, by trying thes following
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dnl until something works:
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dnl
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dnl 1 - try the test_prefix
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dnl 2 - check whether pkgconfig can find values (unless --with-pkg-config=no)
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dnl 3 - use the prefix, if it is not the default
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dnl 4 - use defaults, /usr/local/include/OpenEXR and /usr/local/lib
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dnl
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dnl
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dnl Expected arguments
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dnl $1: arg_cxxflags - CXXFLAGS variable to set
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dnl
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dnl $2: arg-ldflags - LDFLAGS variable to set
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dnl
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dnl $3: package name (the package being checked), as requried by pkg-config
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dnl
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dnl $4: arg_include_subdir
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dnl the name of the subdirectory name that is tacked on to
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dnl the end of the include path e.g. "OpenEXR" in
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dnl /usr/local/include/OpenEXR
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dnl
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dnl $5: arg_default_libs - default libraries, used if pkgconfig doesnt work
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dnl
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dnl $6: arg_test_prefix
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dnl the argument passed to configure specifying a directory to
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dnl be used in the CXX and LD flags for example:
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dnl $2 = "openexr-prefix" and
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dnl "configure --openexr-prefix=/usr/lib"
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dnl leads to CXX including "-I/usr/lib/OpenEXR"
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dnl
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dnl create some local m4 "variables" so that we don't have to use numbers
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define([arg_cxxflags],$1)
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define([arg_ldflags],$2)
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define([arg_libs],$3)
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define([arg_pkg_name],$4)
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define([arg_include_subdir],$5)
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define([arg_default_ldflags],$6)
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define([arg_default_libs],$7)
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define([arg_test_prefix],$8)
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TEST_CXXFLAGS=""
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TEST_LDFLAGS=""
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TEST_LIBS=""
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AC_ARG_WITH(arg_test_prefix,[ --with-arg_test_prefix=PFX Prefix where tested libraries are supposed to be installed (optional)], test_prefix="$withval", test_prefix="NONE")
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echo "test_prefix = $test_prefix"
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AC_ARG_VAR(PKG_CONFIG, Path to pkg-config command)
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AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
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AC_ARG_WITH(pkg-config,[ --with-pkg-config=PATH Specify which pkg-config to use (optional)], PKG_CONFIG="$withval",)
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if test "x$test_prefix" != "xNONE" ; then
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echo "using arg_test_prefix to set arg_cxxflags, arg_ldflags and arg_libs:"
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for inc_dir in arg_include_subdir
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do
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TEST_CXXFLAGS="$TEST_CXXFLAGS -I$test_prefix/include/$inc_dir"
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done
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TEST_LDFLAGS="-L$test_prefix/lib"
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TEST_LDFLAGS="$TEST_LDFLAGS arg_default_ldflags"
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TEST_LIBS="arg_default_libs"
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else
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dnl
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dnl Get the cflags and libraries from the arg_pkg_name package using
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dnl pkg-config
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dnl
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dnl Note: the TEST_LIBS contains both the -L and the -l flags. This means
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dnl the -L flags will appear twice on the command line, but we can not
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dnl limit it to --libs-only-l because it may include the "-pthread" flag.
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dnl
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if test x$PKG_CONFIG != xno ; then
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echo "using pkg-config to set arg_cxxflags and arg_ldflags:"
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TEST_CXXFLAGS="`$PKG_CONFIG --cflags arg_pkg_name`"
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TEST_LDFLAGS="`$PKG_CONFIG --libs-only-L arg_pkg_name`"
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TEST_LIBS="`$PKG_CONFIG --libs arg_pkg_name`"
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else
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echo "Not using pkg-config."
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TEST_CXXFLAGS=""
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TEST_LDFLAGS=""
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TEST_LIBS=""
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fi
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dnl
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dnl if the flags are still not set, try a prefix and finally a default
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dnl
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if test -z "${TEST_CXXFLAGS}"; then
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TEST_CXXFLAGS=""
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if test "x$prefix" != "xNONE"; then
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echo "using prefix to set arg_cxxflags and arg_ldflags:"
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for inc_dir in arg_include_subdir
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do
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TEST_CXXFLAGS="$TEST_CXXFLAGS -I$prefix/include/$inc_dir"
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done
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TEST_LDFLAGS="-L$prefix/lib"
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else
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echo "using default as guess for arg_cxxflags and arg_ldflags:"
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for inc_dir in arg_include_subdir
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do
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TEST_CXXFLAGS="$TEST_CXXFLAGS -I/usr/local/include/$inc_dir"
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done
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TEST_LDFLAGS="arg_default_ldflags"
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fi
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TEST_LIBS="arg_default_libs"
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fi
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fi
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echo " arg_cxxflags = $TEST_CXXFLAGS"
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echo " arg_ldflags = $TEST_LDFLAGS"
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echo " arg_libs = $TEST_LIBS"
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AC_SUBST(arg_cxxflags, $TEST_CXXFLAGS)
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AC_SUBST(arg_ldflags, $TEST_LDFLAGS)
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AC_SUBST(arg_libs, $TEST_LIBS)
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dnl clean up local "variables"
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undefine([arg_cxxflags])
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undefine([arg_ldflags])
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undefine([arg_libs])
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undefine([arg_pkg_name])
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undefine([arg_include_subdir])
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undefine([arg_default_ldflags])
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undefine([arg_default_libs])
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undefine([arg_test_prefix])
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])
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