svga: fix git_sha1.h include path in Android.mk (v3)

Adds libmesa_git_sha1 static (dummy) library to generate git_sha1.h
with some polishing to header dependency on .git/HEAD and scripted rules.

The now redundant generation rules are removed from Android.gen.mk
libmesa_git_sha1 whole static depedency is added to libmesa_pipe_svga,
libmesa_dricore and libmesa_st_mesa modules

Fixes the following building error:

external/mesa/src/gallium/drivers/svga/svga_screen.c:26:10:
fatal error: 'git_sha1.h' file not found
         ^
1 error generated.

Fixes: 1ce3a27 ("svga: Add the ability to log messages to
vmware.log on the host.")
Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 59 insertions, 0 deletions

diff --git a/src/mesa/Android.libmesa_git_sha1.mk b/src/mesa/Android.libmesa_git_sha1.mk
new file mode 100644
index 00000000000..0fd176bf7d5
--- /dev/null
+++ b/src/mesa/Android.libmesa_git_sha1.mk
@@ -0,0 +1,59 @@
+# Mesa 3-D graphics library
+#
+# Copyright (C) 2017 Mauro Rossi <[email protected]>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+
+# ----------------------------------------------------------------------
+# libmesa_git_sha1
+# ----------------------------------------------------------------------
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := libmesa_git_sha1
+
+LOCAL_MODULE_CLASS := STATIC_LIBRARIES
+intermediates := $(call local-generated-sources-dir)
+
+# dummy.c source file is generated to meet the build system's rules.
+LOCAL_GENERATED_SOURCES += $(intermediates)/dummy.c
+
+$(intermediates)/dummy.c:
+	@mkdir -p $(dir $@)
+	@echo "Gen Dummy: $(PRIVATE_MODULE) <= $(notdir $(@))"
+	$(hide) touch $@
+
+LOCAL_GENERATED_SOURCES += $(addprefix $(intermediates)/, git_sha1.h)
+
+$(intermediates)/git_sha1.h: $(wildcard $(MESA_TOP)/.git/logs/HEAD)
+	@mkdir -p $(dir $@)
+	@echo "GIT-SHA1: $(PRIVATE_MODULE) <= git"
+	$(hide) touch $@
+	$(hide) if which git > /dev/null; then \
+			git --git-dir $(MESA_TOP)/.git log -n 1 --oneline | \
+			sed 's/^\([^ ]*\) .*/#define MESA_GIT_SHA1 "git-\1"/' \
+			> $@; \
+		fi
+
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(intermediates)
+
+include $(MESA_COMMON_MK)
+include $(BUILD_STATIC_LIBRARY)