[PULL 2/5] roms/Makefile.edk2: don't pull in submodules when building from tarball

[Philippe Mathieu-Daudé]

From: Michael Roth <address@hidden>

Currently the `make efi` target pulls submodules nested under the
roms/edk2 submodule as dependencies. However, when we attempt to build
from a tarball this fails since we are no longer in a git tree.

A preceding patch will pre-populate these submodules in the tarball,
so assume this build dependency is only needed when building from a
git tree.

Cc: Laszlo Ersek <address@hidden>
Cc: Bruce Rogers <address@hidden>
Cc: address@hidden # v4.1.0
Reported-by: Bruce Rogers <address@hidden>
Reviewed-by: Laszlo Ersek <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Tested-by: Philippe Mathieu-Daudé <address@hidden>
Signed-off-by: Michael Roth <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 roms/Makefile.edk2 | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/roms/Makefile.edk2 b/roms/Makefile.edk2
index c2f2ff59d5..33a074d3a4 100644
--- a/roms/Makefile.edk2
+++ b/roms/Makefile.edk2
@@ -46,8 +46,13 @@ all: $(foreach 
flashdev,$(flashdevs),../pc-bios/edk2-$(flashdev).fd.bz2) \
 # files.
 .INTERMEDIATE: $(foreach flashdev,$(flashdevs),../pc-bios/edk2-$(flashdev).fd)
 
+# Fetch edk2 submodule's submodules. If it is not in a git tree, assume
+# we're building from a tarball and that they've already been fetched by
+# make-release/tarball scripts.
 submodules:
-       cd edk2 && git submodule update --init --force
+       if test -d edk2/.git; then \
+               cd edk2 && git submodule update --init --force; \
+       fi
 
 # See notes on the ".NOTPARALLEL" target and the "+" indicator in
 # "tests/uefi-test-tools/Makefile".
-- 
2.21.0