freebsd-nq/lib/libnvpair/Makefile.am
Rafael Kitover 762f9ef3d9 config: better libtirpc detection
Improve the autoconf code for finding libtirpc and do not assume the
headers are in /usr/include/tirpc.

Also remove this assumption from the `rpc/xdr.h` header in libspl and
use the same `#include_next` mechanism that is used for other libspl
headers.

Include pkg.m4 from pkg-config in config/ for PKG_CHECK_MODULES(), the
file license allows this.

Include ax_save_flags.m4 and ax_restore_flags.m4 from autoconf-archive,
the file licenses are compatible. Use the 2012 versions so as not rely
on a more recent autoconf feature AS_VAR_COPY(), which breaks some build
slaves.

Add new macro library `config/find_system_library.m4` which defines the
FIND_SYSTEM_LIBRARY() macro which is a convenience wrapper over using
PKG_CHECK_MODULES() with a fallback to standard library locations and
some sanity checks.

The parameters are:

```
FIND_SYSTEM_LIBRARY(VARIABLE-PREFIX, MODULE, HEADER, HEADER-PREFIXES,
    LIBRARY, FUNCTIONS, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
```

`HEADER-PREFIXES` and `FUNCTIONS` are comma-separated m4 lists.

For libtirpc we are using:

```
FIND_SYSTEM_LIBRARY(LIBTIRPC, [libtirpc], [rpc/xdr.h], [tirpc], [tirpc],
    [xdrmem_create], [], [...])
```

The headers are first checked for without the prefixes and then with.

This system works with pkg-config and falls back on checking standard
header/library locations, it can be easily overridden by the user by
setting the `PREFIX_CFLAGS` and `PREFIX_LIBS` variables which are
automatically added to the `./configure --help` output.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Closes #7422 
Closes #8313
2019-03-02 16:19:05 -08:00

35 lines
678 B
Makefile

include $(top_srcdir)/config/Rules.am
VPATH = \
$(top_srcdir)/module/nvpair \
$(top_srcdir)/lib/libnvpair
# Includes kernel code, generate warnings for large stack frames
# and required CFLAGS for libtirpc
AM_CFLAGS += $(FRAME_LARGER_THAN) $(LIBTIRPC_CFLAGS)
DEFAULT_INCLUDES += \
-I$(top_srcdir)/include \
-I$(top_srcdir)/lib/libspl/include
lib_LTLIBRARIES = libnvpair.la
USER_C = \
libnvpair.c \
libnvpair_json.c \
nvpair_alloc_system.c
KERNEL_C = \
nvpair_alloc_fixed.c \
nvpair.c \
fnvpair.c
nodist_libnvpair_la_SOURCES = \
$(USER_C) \
$(KERNEL_C)
libnvpair_la_LIBADD = $(LIBTIRPC_LIBS)
libnvpair_la_LDFLAGS = -version-info 1:1:0
EXTRA_DIST = $(USER_C)