make: move version suffix gathering from configure to compile time

[libsigrok.git] / Makefile.am

diff --git a/Makefile.am b/Makefile.am
index dea187344335dce455dc128359c0c01c65b093af..57c77b3860d16df45aeebfb8e9aca7b70e7bc13e 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -25,6 +25,8 @@ GNUMAKEFLAGS = --no-print-directory
 # distutils/setuptools cause trouble on distcheck. Disable for now.
 DISTCHECK_CONFIGURE_FLAGS = --disable-python
 
+CLEAN_EXTRA =
+
 FIRMWARE_DIR = $(datadir)/sigrok-firmware
 
 local_includes = -Iinclude -I$(srcdir)/include -I$(srcdir)/src -I. @RPC_CFLAGS@
@@ -725,6 +727,35 @@ nodist_library_include_HEADERS = \
        include/libsigrok/version.h
 noinst_HEADERS = src/libsigrok-internal.h
 
+$(builddir)/src/version.lo: $(builddir)/include/libsigrok/git-version.h
+
+# Create the git-version.h file even for non-versioned source trees,
+# to reduce complexity in the library code. Re-create the header file
+# when branches change, when revisions change, or upon re-configuration.
+# Use the verbatim tagged version number when applicable, or append the
+# "-git-<hash>[-dirty]" suffix for non-tagged source trees.
+if VCS_IS_GIT
+
+$(builddir)/include/libsigrok/git-version.h: Makefile $(VERSION_GITVERSION_DEPS)
+       $(AM_V_GEN) \
+               HASH=`git -C "$(srcdir)" describe --match "@VERSION_TAG_MATCH@" --always --dirty` && \
+               HASH=`echo "$${HASH}" | sed 's/@VERSION_TAG_MATCH@-//'` && \
+               SUFFIX=`git -C "$(srcdir)" describe --match "@VERSION_TAG_MATCH@" --exact-match > /dev/null 2> /dev/null || echo "-$${HASH}"` && \
+               echo "#undef SR_PACKAGE_VERSION_STRING_SUFFIX" > $@ && \
+               echo "#define SR_PACKAGE_VERSION_STRING_SUFFIX \"$${SUFFIX}\"" >> $@
+
+else
+
+$(builddir)/include/libsigrok/git-version.h:
+       $(AM_V_GEN)echo '#define SR_PACKAGE_VERSION_STRING_SUFFIX ""' > $@
+
+endif
+
+version-clean:
+       rm -f $(builddir)/include/libsigrok/git-version.h
+
+CLEAN_EXTRA += version-clean
+
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libsigrok.pc
 
@@ -802,7 +833,6 @@ tests_main_LDADD = libsigrok.la $(SR_EXTRA_LIBS) $(TESTS_LIBS)
 BUILD_EXTRA =
 INSTALL_EXTRA =
 UNINSTALL_EXTRA =
-CLEAN_EXTRA =
 
 libsigrok-uninstall:
        -rmdir $(DESTDIR)$(includedir)/libsigrok