Makefile: Don't install git hooks automatically

These specific git hooks are only needed when someone wants to push a
patch to upstream and so it's not needed to run it in every make call.
Beside that, we also don't know the environment in which this is
executed and it might not be wanted.

Thus, add a new make target `gitconfig` and move the install command to
it. It can be used by running `make gitconfig`.

Signed-off-by: Felix Singer <felixsinger@posteo.net>
Change-Id: Ib83568c7ff149a8ec34ad7e92720c36a89def7bd
Reviewed-on: https://review.coreboot.org/c/flashrom/+/68647
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
---
M Makefile
1 file changed, 26 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index a8df91f..425b58c 100644
--- a/Makefile
+++ b/Makefile
@@ -408,9 +408,6 @@
 # No spaces in release names unless set explicitly
 RELEASENAME ?= $(shell echo "$(VERSION)" | sed -e 's/ /_/')
 
-# If a VCS is found then try to install hooks.
-$(shell ./util/getrevision.sh -c 2>/dev/null && ./util/git-hooks/install.sh)
-
 ###############################################################################
 # Default settings of CONFIG_* variables.
 
@@ -1040,6 +1037,9 @@
 libpayload: clean
 	make CC="CC=i386-elf-gcc lpgcc" AR=i386-elf-ar RANLIB=i386-elf-ranlib
 
+gitconfig:
+	./util/getrevision.sh -c 2>/dev/null && ./util/git-hooks/install.sh
+
 .PHONY: all install clean distclean config _export export tarball libpayload
 
 # Disable implicit suffixes and built-in rules (for performance and profit)

