Add support for git

Leverage the new git module in shtk-1.8 to support Git clones and
updates in addition to CVS.  CVS remains the default SCM for
backwards compatibility reasons, but this is subject to change.

NEWS

@@ -3,7 +3,9 @@ Changes in version 2.9
 
 STILL UNDER DEVELOPMENT; NOT RELEASED YET.
 
-* No changes recorded.
+* Added support to fetch sources from Git in addition to CVS.  The new
+  SCM variable controls which system to use and still defaults to CVS.
+  The new GIT_{BRANCH,REPO}_{SRC,XSRC} variables configure Git access.
 
 
 Changes in version 2.8

NetBSD.conf

@@ -25,6 +25,7 @@ BUILD_TARGETS="release"
 INCREMENTAL_BUILD="no"
 
 # Determine the CVS root and the current release.
+SCM="git"
 if [ -f "${SRCDIR}/CVS/Root" ]; then
     CVSROOT="$(cat ${SRCDIR}/CVS/Root)"
 else

configure.ac

@@ -65,7 +65,7 @@ m4_ifndef([PKG_CHECK_MODULES],
 
 m4_ifndef([SHTK_CHECK],
     [m4_fatal([Cannot find shtk.m4; see the INSTALL document for help])])
-SHTK_CHECK([>= 1.7])
+SHTK_CHECK([>= 1.8])
 
 
 AM_CONDITIONAL([HOST_IS_NETBSD], [test "$(uname -s)" = NetBSD])

default.conf

@@ -5,7 +5,7 @@
 #
 # This file does not assume that the host is NetBSD.  For that reason,
 # it cannot automatically determine "valid" settings for some variables
-# like MACHINES or CVSTAG and therefore only generic values are set.
+# like MACHINES or GIT_*_BRANCH and therefore only generic values are set.
 
 # Place all build files in the user's home directory.
 BUILD_ROOT="${HOME}/netbsd"
@@ -26,6 +26,7 @@ BUILD_TARGETS="release"
 # Do not perform update builds by default.
 INCREMENTAL_BUILD="no"
 
-# Set the CVS root and the desired release.
-CVSROOT=":ext:[email protected]:/cvsroot"
-#CVSTAG="netbsd-6"
+# Set the Git repo and the desired release.
+SCM="git"
+GIT_SRC_REPO="https://github.com/NetBSD/src.git"
+#GIT_SRC_BRANCH="netbsd-6"

sysbuild.conf.5

@@ -25,7 +25,7 @@
 .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 .\" OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-.Dd December 31, 2024
+.Dd January 6, 2025
 .Dt SYSBUILD.CONF 5
 .Os
 .Sh NAME
@@ -52,6 +52,33 @@ Default:
 CVS tag to use during checkouts or updates of the src and xsrc modules.
 .Pp
 Default: not defined.
+.It Va GIT_SRC_BRANCH
+Name of the Git branch to check out for the src module.
+Default:
+.Sq trunk .
+.It Va GIT_SRC_REPO
+URI of the Git repo that contains the src module.
+Default:
+.Sq https://github.com/NetBSD/src.git .
+.It Va GIT_XSRC_BRANCH
+Name of the Git branch to check out for the xsrc module.
+Default:
+.Sq trunk .
+.It Va GIT_XSRC_REPO
+URI of the Git repo that contains the xsrc module.
+Default:
+.Sq https://github.com/NetBSD/xsrc.git .
+.It Va SCM
+Name of the version control system to use.
+Can be one of:
+.Sq cvs
+or
+.Sq git .
+.Pp
+Default:
+.Sq cvs .
+This will change in the future as CVS is phased out as the preferred SCM for
+NetBSD development.
 .It Va SRCDIR
 Path to the src module.
 If you want

sysbuild.sh

@@ -32,6 +32,7 @@
 shtk_import cli
 shtk_import config
 shtk_import cvs
+shtk_import git
 shtk_import hw
 shtk_import list
 shtk_import process
@@ -40,9 +41,12 @@ shtk_import process
 # List of valid configuration variables.
 #
 # Please remember to update sysbuild.conf(5) if you change this list.
-SYSBUILD_CONFIG_VARS="BUILD_ROOT BUILD_TARGETS CVSROOT CVSTAG INCREMENTAL_BUILD
-                      MACHINES MKVARS NJOBS RELEASEDIR SRCDIR UPDATE_SOURCES
-                      XSRCDIR"
+SYSBUILD_CONFIG_VARS="
+    BUILD_ROOT BUILD_TARGETS CVSROOT CVSTAG
+    GIT_SRC_BRANCH GIT_SRC_REPO GIT_XSRC_BRANCH GIT_XSRC_REPO
+    INCREMENTAL_BUILD MACHINES MKVARS NJOBS RELEASEDIR
+    SCM SRCDIR
+    UPDATE_SOURCES XSRCDIR"
 
 
 # Paths to installed files.
@@ -62,10 +66,15 @@ sysbuild_set_defaults() {
     shtk_config_set BUILD_ROOT "${HOME}/sysbuild"
     shtk_config_set BUILD_TARGETS "release"
     shtk_config_set CVSROOT ":ext:[email protected]:/cvsroot"
+    shtk_config_set GIT_SRC_BRANCH "trunk"
+    shtk_config_set GIT_SRC_REPO "https://github.com/NetBSD/src.git"
+    shtk_config_set GIT_XSRC_BRANCH "trunk"
+    shtk_config_set GIT_XSRC_REPO "https://github.com/NetBSD/xsrc.git"
     shtk_config_set INCREMENTAL_BUILD "false"
     shtk_config_set MACHINES "$(uname -m)"
     shtk_config_set NJOBS "$(shtk_hw_ncpus)"
     shtk_config_set RELEASEDIR "${HOME}/sysbuild/release"
+    shtk_config_set SCM "cvs"
     shtk_config_set SRCDIR "${HOME}/sysbuild/src"
     shtk_config_set UPDATE_SOURCES "true"
 
@@ -295,17 +304,40 @@ sysbuild_fetch() {
 
     shtk_config_run_hook pre_fetch_hook
 
-    local cvsroot="$(shtk_config_get CVSROOT)"
+    local scm="$(shtk_config_get SCM)"
+    case "${scm}" in
+        cvs)
+            local cvsroot="$(shtk_config_get CVSROOT)"
 
-    shtk_cli_info "Updating base source tree"
-    shtk_cvs_fetch "${cvsroot}" src "$(shtk_config_get_default CVSTAG '')" \
-        "$(shtk_config_get SRCDIR)"
+            shtk_cli_info "Updating base source tree"
+            shtk_cvs_fetch "${cvsroot}" src "$(shtk_config_get_default CVSTAG '')" \
+                "$(shtk_config_get SRCDIR)"
 
-    if shtk_config_has XSRCDIR; then
-        shtk_cli_info "Updating X11 source tree"
-        shtk_cvs_fetch "${cvsroot}" xsrc \
-            "$(shtk_config_get_default CVSTAG '')" "$(shtk_config_get XSRCDIR)"
-    fi
+            if shtk_config_has XSRCDIR; then
+                shtk_cli_info "Updating X11 source tree"
+                shtk_cvs_fetch "${cvsroot}" xsrc \
+                    "$(shtk_config_get_default CVSTAG '')" "$(shtk_config_get XSRCDIR)"
+            fi
+            ;;
+
+        git)
+            local srcrepo="$(shtk_config_get GIT_SRC_REPO)"
+            local srcbranch="$(shtk_config_get GIT_SRC_BRANCH)"
+            shtk_cli_info "Updating base source tree"
+            shtk_git_fetch "${srcrepo}" "${srcbranch}" "$(shtk_config_get SRCDIR)"
+
+            if shtk_config_has XSRCDIR; then
+                local xsrcrepo="$(shtk_config_get GIT_XSRC_REPO)"
+                local xsrcbranch="$(shtk_config_get GIT_XSRC_BRANCH)"
+                shtk_cli_info "Updating X11 source tree"
+                shtk_git_fetch "${xsrcrepo}" "${xsrcbranch}" "$(shtk_config_get XSRCDIR)"
+            fi
+            ;;
+
+        *)
+            shtk_cli_error "Unknown SCM type ${scm}"
+            ;;
+    esac
 
     shtk_config_run_hook post_fetch_hook
 }