1dnl Check to find the lzo headers/libraries
2
3AC_DEFUN([tinc_LZO],
4[
5  AC_ARG_ENABLE([lzo],
6    AS_HELP_STRING([--disable-lzo], [disable lzo compression support]))
7  AS_IF([test "x$enable_lzo" != "xno"], [
8    AC_DEFINE(HAVE_LZO, 1, [enable lzo compression support])
9    AC_ARG_WITH(lzo,
10      AS_HELP_STRING([--with-lzo=DIR], [lzo base directory, or:]),
11      [lzo="$withval"
12       CPPFLAGS="$CPPFLAGS -I$withval/include"
13       LDFLAGS="$LDFLAGS -L$withval/lib"]
14    )
15
16    AC_ARG_WITH(lzo-include,
17      AS_HELP_STRING([--with-lzo-include=DIR], [lzo headers directory]),
18      [lzo_include="$withval"
19       CPPFLAGS="$CPPFLAGS -I$withval"]
20    )
21
22    AC_ARG_WITH(lzo-lib,
23      AS_HELP_STRING([--with-lzo-lib=DIR], [lzo library directory]),
24      [lzo_lib="$withval"
25       LDFLAGS="$LDFLAGS -L$withval"]
26    )
27
28    AC_CHECK_LIB(lzo2, lzo1x_1_compress,
29      [LIBS="$LIBS -llzo2"],
30      [AC_CHECK_LIB(lzo, lzo1x_1_compress,
31        [LIBS="$LIBS -llzo"],
32        [AC_MSG_ERROR("lzo libraries not found."); break]
33      )]
34    )
35
36    AC_CHECK_HEADERS(lzo/lzo1x.h,
37      [AC_DEFINE(LZO1X_H, [<lzo/lzo1x.h>], [Location of lzo1x.h])],
38      [AC_CHECK_HEADERS(lzo2/lzo1x.h,
39        [AC_DEFINE(LZO1X_H, [<lzo2/lzo1x.h>], [Location of lzo1x.h])],
40        [AC_CHECK_HEADERS(lzo1x.h,
41          [AC_DEFINE(LZO1X_H, [<lzo1x.h>], [Location of lzo1x.h])],
42          [AC_MSG_ERROR("lzo header files not found."); break]
43        )]
44      )]
45    )
46  ])
47])
48