1 files changed, 70 insertions, 0 deletions
diff --git a/cross/ndk-build/ndk-build.mk.in b/cross/ndk-build/ndk-build.mk.in
new file mode 100644
index 00000000000..ea1be5af6f1
--- /dev/null
+++ b/cross/ndk-build/ndk-build.mk.in
@@ -0,0 +1,70 @@
+### @configure_input@
+
+# Copyright (C) 2023-2024 Free Software Foundation, Inc.
+
+# This file is part of GNU Emacs.
+
+# GNU Emacs is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# GNU Emacs is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+# This file is included all over the place to get and build
+# prerequisites.
+
+NDK_BUILD_MODULES = @NDK_BUILD_MODULES@
+NDK_BUILD_CXX_SHARED = @NDK_BUILD_CXX_SHARED@
+NDK_BUILD_CXX_STL = @NDK_BUILD_CXX_STL@
+NDK_BUILD_CXX_LDFLAGS = @NDK_BUILD_CXX_LDFLAGS@
+NDK_BUILD_ANY_CXX_MODULE = @NDK_BUILD_ANY_CXX_MODULE@
+NDK_BUILD_SHARED =
+NDK_BUILD_STATIC =
+
+define uniqify
+$(if $1,$(firstword $1) $(call uniqify,$(filter-out $(firstword $1),$1)))
+endef
+
+# Remove duplicate modules.  These can occur when a single module
+# imports a module and also declares it in LOCAL_SHARED_LIBRARIES.
+NDK_BUILD_MODULES := $(call uniqify,$(NDK_BUILD_MODULES))
+
+# Here are all of the files to build.
+NDK_BUILD_ALL_FILES := $(foreach file,$(NDK_BUILD_MODULES), \
+			 $(top_builddir)/cross/ndk-build/$(file))
+
+# The C++ standard library must be extracted from the Android NDK
+# directories and included in the application package, if any module
+# requires the C++ standard library.
+
+ifneq ($(NDK_BUILD_ANY_CXX_MODULE),)
+NDK_BUILD_SHARED += $(NDK_BUILD_CXX_SHARED)
+endif
+
+define subr-1
+ifeq ($(suffix $(1)),.so)
+NDK_BUILD_SHARED += $(top_builddir)/cross/ndk-build/$(1)
+else
+ifeq ($(suffix $(1)),.a)
+NDK_BUILD_STATIC += $(top_builddir)/cross/ndk-build/$(1)
+endif
+endif
+endef
+
+# Generate rules for each module.
+
+$(foreach module,$(NDK_BUILD_MODULES),$(eval $(call subr-1,$(module))))
+
+# Generate rules to build everything now.
+# Make sure to use the top_builddir currently defined.
+
+NDK_TOP_BUILDDIR := $(top_builddir)
+$(NDK_BUILD_ALL_FILES) &:
+	$(MAKE) -C $(NDK_TOP_BUILDDIR)/cross/ndk-build $(NDK_BUILD_MODULES)