Analogous to libnftnl's build system, define libnftables interface
version in a variable in Make_global.am.
Suggested-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Phil Sutter <phil@xxxxxx>
---
Make_global.am | 21 +++++++++++++++++++++
src/Makefile.am | 4 +++-
2 files changed, 24 insertions(+), 1 deletion(-)
create mode 100644 Make_global.am
diff --git a/Make_global.am b/Make_global.am
new file mode 100644
index 0000000000000..713d95834d6ee
--- /dev/null
+++ b/Make_global.am
@@ -0,0 +1,21 @@
+# This is _NOT_ the library release version, it's an API version.
+# Extracted from Chapter 6 "Library interface versions" of the libtool docs.
+#
+# <snippet>
+# Here are a set of rules to help you update your library version information:
+#
+# 1. Start with version information of `0:0:0' for each libtool library.
+# 2. Update the version information only immediately before a public release
+# of your software. More frequent updates are unnecessary, and only guarantee
+# that the current interface number gets larger faster.
+# 3. If the library source code has changed at all since the last update,
+# then increment revision (`c:r:a' becomes `c:r+1:a').
+# 4. If any interfaces have been added, removed, or changed since the last
+# update, increment current, and set revision to 0.
+# 5. If any interfaces have been added since the last public release, then
+# increment age.
+# 6. If any interfaces have been removed since the last public release, then
+# set age to 0.
+# </snippet>
+#
+libnftables_LIBVERSION=1:0:0
diff --git a/src/Makefile.am b/src/Makefile.am
index 92ac61a6044e6..bd6fe07beb8a4 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,3 +1,5 @@
+include $(top_srcdir)/Make_global.am
+
sbin_PROGRAMS = nft
CLEANFILES = scanner.c parser_bison.c
@@ -70,7 +72,7 @@ libparser_la_CFLAGS = ${AM_CFLAGS} \
-Wno-redundant-decls
libnftables_la_LIBADD = ${LIBMNL_LIBS} ${LIBNFTNL_LIBS} libparser.la
-libnftables_la_LDFLAGS = -version-info 1:0:0
+libnftables_la_LDFLAGS = -version-info ${libnftables_LIBVERSION}
if BUILD_MINIGMP
noinst_LTLIBRARIES += libminigmp.la
--
2.17.0
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