Include the git commit SHA1 in the version number.

For bug reports it's very convenient to know the exact version. For
release builds, the standard version triplet (major.minor.micro) is
more than sufficient, but that's not the case for development builds.
Due to the post-release version increment, development builds already
have a version number that is distinct from previous releases, but
including the git commit SHA1 is even more accurate.

On Windows, the git commit SHA1 is also embedded in the version
resource.

configure.ac

@@ -106,6 +106,11 @@ AC_SUBST([DC_VERSION_MINOR],[dc_version_minor])
 AC_SUBST([DC_VERSION_MICRO],[dc_version_micro])
 AC_SUBST([DC_VERSION_LIBTOOL],[dc_version_lt_current:dc_version_lt_revision:dc_version_lt_age])
 
+# Version suffix.
+m4_ifset([dc_version_suffix],[
+	AC_DEFINE(HAVE_VERSION_SUFFIX, [1], [Define if a version suffix is present.])
+])
+
 AC_CONFIG_FILES([
    libdivecomputer.pc
    Makefile

src/Makefile.am

@@ -77,6 +77,8 @@ libdivecomputer.exp: libdivecomputer.symbols
 .rc.lo:
 	$(AM_V_GEN) $(LIBTOOL) --silent --tag=RC --mode=compile $(RC) $< -o $@
 
+libdivecomputer.lo: revision.h
+
 FORCE:
 $(top_srcdir)/revision: FORCE
 	@if (test -d $(top_srcdir)/.git && cd $(top_srcdir) \

src/libdivecomputer.rc.in

@@ -1,10 +1,22 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <winver.h>
 
+#ifdef HAVE_VERSION_SUFFIX
+#include "revision.h"
+#endif
+
 VS_VERSION_INFO VERSIONINFO
 FILEVERSION     @DC_VERSION_MAJOR@,@DC_VERSION_MINOR@,@DC_VERSION_MICRO@,0
 PRODUCTVERSION  @DC_VERSION_MAJOR@,@DC_VERSION_MINOR@,@DC_VERSION_MICRO@,0
-FILEFLAGSMASK   0
+FILEFLAGSMASK   VS_FFI_FILEFLAGSMASK
+#ifdef HAVE_VERSION_SUFFIX
+FILEFLAGS       VS_FF_PRERELEASE
+#else
 FILEFLAGS       0
+#endif
 FILEOS          VOS__WINDOWS32
 FILETYPE        VFT_DLL
 FILESUBTYPE     0
@@ -21,6 +33,9 @@ BEGIN
 			VALUE "OriginalFilename", "libdivecomputer.dll"
 			VALUE "ProductName", "libdivecomputer"
 			VALUE "ProductVersion", "@VERSION@"
+#ifdef HAVE_VERSION_SUFFIX
+			VALUE "Comments", DC_VERSION_REVISION
+#endif
 		END
 	END
 	BLOCK "VarFileInfo"

src/version.c

@@ -19,8 +19,16 @@
  * MA 02110-1301 USA
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <libdivecomputer/version.h>
 
+#ifdef HAVE_VERSION_SUFFIX
+#include "revision.h"
+#endif
+
 const char *
 dc_version (dc_version_t *version)
 {
@@ -30,7 +38,11 @@ dc_version (dc_version_t *version)
 		version->micro = DC_VERSION_MICRO;
 	}
 
+#ifdef HAVE_VERSION_SUFFIX
+	return DC_VERSION " (" DC_VERSION_REVISION ")";
+#else
 	return DC_VERSION;
+#endif
 }
 
 int