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d8ea139e83
* build-aux/ndk-build-helper.mk: Define in terms of BUILD_AUXDIR. * m4/ndk-build.m4 (ndk_INIT): Find right build-aux directory. Remove uses of unportable shell constructs.
382 lines
12 KiB
Plaintext
382 lines
12 KiB
Plaintext
dnl Copyright (C) 2023 Free Software Foundation, Inc.
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dnl This file is part of GNU Emacs.
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dnl GNU Emacs is free software: you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation, either version 3 of the License, or
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dnl (at your option) any later version.
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dnl GNU Emacs is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl You should have received a copy of the GNU General Public License
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dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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# Support for building Emacs with dependencies using the Android NDK
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# build system.
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AC_ARG_WITH([ndk_path],
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[AS_HELP_STRING([--with-ndk-path],
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[find Android libraries in these directories])])
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AC_ARG_WITH([ndk_cxx_shared],
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[AS_HELP_STRING([--with-ndk-cxx-shared],
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[name of the C++ standard library included with the NDK])])
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# ndk_INIT(ABI, API, DIR, CFLAGS)
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# -------------------------------
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# Initialize the Android NDK. ABI is the ABI being built for.
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# API is the API version being built for.
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# CFLAGS is a list of compiler flags.
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# As a side effect, set the variable ndk_INITIALIZED to true.
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# DIR should be a directory containing the Makefile.in actually
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# implementing the Android NDK build system.
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AC_DEFUN_ONCE([ndk_INIT],
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[
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# Look for Android.mk files.
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ndk_module_files=
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for file in $with_ndk_path; do
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if test -f $file/Android.mk; then
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ndk_module_files="$ndk_module_files$file/Android.mk "
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fi
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done
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AC_REQUIRE_AUX_FILE([ndk-build-helper.mk])
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ndk_AUX_DIR=$ac_aux_dir
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ndk_ABI=$1
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ndk_MODULES=
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ndk_MAKEFILES=
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ndk_INITIALIZED=yes
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ndk_API=$2
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ndk_DIR=$3
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ndk_ANY_CXX=
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ndk_BUILD_CFLAGS="$4"
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AS_CASE(["$ndk_ABI"],
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[*arm64*], [ndk_ARCH=arm64],
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[*arm*], [ndk_ARCH=arm],
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[*x86_64*], [ndk_ARCH=x86_64],
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[*x86*], [ndk_ARCH=x86],
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[*mips64*], [ndk_ARCH=mips64],
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[*mips*], [ndk_ARCH=mips],
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[AC_MSG_ERROR([Failed to determine Android device architecture])])
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# This is a map between pkg-config style package names and Android
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# ones.
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ndk_package_map="libwebpdemux:webpdemux libxml-2.0:libxml2 jansson:libjansson"
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ndk_package_map="$ndk_package_map sqlite3:libsqlite_static_minimal"
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ndk_package_map="$ndk_package_map MagickWand:libmagickwand-7 lcms2:liblcms2"
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# Replace ndk_module with the appropriate Android module name if it is
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# found in ndk_package_map.
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ndk_replace_pkg_config_package () {
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for ndk_stuff in $ndk_package_map; do
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ndk_key=`AS_ECHO([$ndk_stuff]) | cut -d: -f1`
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ndk_value=`AS_ECHO([$ndk_stuff]) | cut -d: -f2`
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if test "$ndk_key" = "$ndk_module"; then
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ndk_module="$ndk_value"
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break
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fi
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done
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}
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# Run the Makefile helper script for the Android.mk file.
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ndk_run_test () {
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# Figure out where the helper Makefile is.
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ndk_build_helper_file="${ndk_AUX_DIR}ndk-build-helper.mk"
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ndk_module_extract_awk="${ndk_AUX_DIR}ndk-module-extract.awk"
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ndk_dir=`AS_DIRNAME([$ndk_android_mk])`
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# Now call Make with the right arguments.
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"$MAKE" -s -f "$ndk_build_helper_file" EMACS_SRCDIR=`pwd` \
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EMACS_ABI="$ndk_ABI" ANDROID_MAKEFILE="$ndk_android_mk" \
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NDK_BUILD_DIR="$ndk_DIR" NDK_ROOT="/tmp" \
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ANDROID_MODULE_DIRECTORY="$ndk_dir" BUILD_AUXDIR=$ndk_AUX_DIR \
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2>&AS_MESSAGE_LOG_FD >conftest.ndk
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# Read the output.
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cat conftest.ndk | awk -f "$ndk_module_extract_awk" MODULE="$ndk_module"
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# Remove the temporary file.
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rm -f conftest.ndk
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}
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# ndk_parse_pkg_config_string PKG_CONFIG_STRING
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# ---------------------------------------------
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# Parse a pkg-config style list of modules. Place the resulting list
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# in ndk_modules.
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ndk_parse_pkg_config_string () {
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ndk_input=[$]1
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ndk_modules=
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while test -n "$ndk_input"; do
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ndk_str=`AS_ECHO_N(["$ndk_input"]) | cut -f1 -d' '`
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ndk_input=`AS_ECHO_N(["$ndk_input"]) | cut -s -f2- -d' '`
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if test "$ndk_str" = ">=" || test "$ndk_str" = "<=" \
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|| test "$ndk_str" = ">" || test "$ndk_str" = "<" \
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|| test "$ndk_str" = "!="; then
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ndk_input=`AS_ECHO_N(["$ndk_input"]) | cut -s -f2- -d' '`
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else
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ndk_modules="$ndk_modules$ndk_str "
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fi
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done
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}
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# ndk_resolve_import_module MODULE
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# --------------------------------
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# Resolve MODULE, a single import. Prepend its makefile to
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# ndk_MAKEFILES if found. Also, prepend all includes to the variable
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# ndk_import_includes.
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ndk_resolve_import_module () {
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module_name=
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ndk_module=[$]1
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AC_MSG_CHECKING([for imported $ndk_module])
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for ndk_android_mk in $ndk_module_files; do
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# Read this Android.mk file. Set NDK_ROOT to /tmp: the Android in
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# tree build system sets it to a meaning value, but build files
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# just use it to test whether or not the NDK is being used.
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ndk_commands=`ndk_run_test`
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AS_IF([test -n "${ndk_commands//\n }"], [eval "$ndk_commands"])
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if test -n "$module_name"; then
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break;
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fi
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done
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AS_IF([test -z "$module_name"],
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[AC_MSG_RESULT([no])
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AC_MSG_ERROR([The module currently being built depends on [$]1, but \
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that could not be found in the list of directories specified in \
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`--with-ndk-path'.])])
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if test -n "$module_cxx_deps"; then
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ndk_ANY_CXX=yes
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fi
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AS_IF([test "$ndk_ANY_CXX" = "yes" && test -z "$with_ndk_cxx_shared"],
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[AC_MSG_ERROR([The module [$]1 requires the C++ standard library \
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(libc++_shared.so), but it was not found.])])
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AC_MSG_RESULT([yes])
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# Make sure the module is prepended.
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ndk_MAKEFILES="$ndk_android_mk $ndk_MAKEFILES"
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ndk_import_includes="$module_includes $ndk_import_includes"
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# Now recursively resolve this module's imports.
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for ndk_module in $module_imports; do
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ndk_resolve_import_module $ndk_module
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done
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}
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# Look for a suitable ar in the same directory as the C compiler.
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ndk_cc_firstword=`AS_ECHO([$CC]) | cut -d' ' -f1`
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ndk_where_cc=`which $ndk_cc_firstword`
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ndk_ar_search_path=$PATH
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# First, try to find $host_alias-ar in PATH.
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AC_PATH_PROGS([AR], [$host_alias-ar], [], [$ndk_ar_search_path])
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AS_IF([test -z "$AR"],[
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# Next, try finding either that or llvm-ar in the directory holding
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# CC.
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ndk_ar_search_path="`AS_DIRNAME([$ndk_where_cc])`:$ndk_ar_search_path"
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AC_PATH_PROGS([AR], [$host_alias-ar llvm-ar], [], [$ndk_ar_search_path])])
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NDK_BUILD_NASM=
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# Next, try to find nasm on x86. This doesn't ship with the NDK.
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AS_IF([test "$ndk_ARCH" = "x86" || test "$ndk_ARCH" = "x86_64"],
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[AC_CHECK_PROGS([NDK_BUILD_NASM], [nasm])])
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# Look for a file named ``libc++_shared.so'' in a subdirectory of
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# $ndk_where_cc if it was not specified.
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AC_MSG_CHECKING([for libc++_shared.so])
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ndk_where_toolchain=
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AS_IF([test -z "$with_ndk_cxx_shared" && test -n "$ndk_where_cc"],[
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# Find the NDK root directory. Go to $ndk_where_cc.
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SAVE_PWD=`pwd`
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cd `dirname "$ndk_where_cc"`
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# Now, keep moving backwards until pwd ends with ``toolchains''.
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while :; do
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if test "`pwd`" = "/"; then
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cd "$SAVE_PWD"
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break
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fi
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ndk_pwd=`pwd`
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if test "`AS_BASENAME([$ndk_pwd])`" = "toolchains"; then
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ndk_where_toolchain=$ndk_pwd
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cd "$SAVE_PWD"
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break
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fi
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cd ..
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done
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ndk_matching_libcxx_shared_so=
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# The toolchain directory should be in "$ndk_where_toolchain".
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AS_IF([test -n "$ndk_where_toolchain"],[
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# Now, look in the directory behind it.
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ndk_cxx_shared_so=`find "$ndk_where_toolchain" -name libc++_shared.so`
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# Look for one with the correct architecture.
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for ndk_candidate in $ndk_cxx_shared_so; do
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AS_CASE([$ndk_candidate],
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[*arm-linux-android*],
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[AS_IF([test "$ndk_ARCH" = "arm"],
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[ndk_matching_libcxx_shared_so=$ndk_candidate])],
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[*aarch64-linux-android*],
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[AS_IF([test "$ndk_ARCH" = "arm64"],
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[ndk_matching_libcxx_shared_so=$ndk_candidate])],
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[*i[[3-6]]86-linux-android*],
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[AS_IF([test "$ndk_ARCH" = "x86"],
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[ndk_matching_libcxx_shared_so=$ndk_candidate])],
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[*x86_64-linux-android*],
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[AS_IF([test "$ndk_ARCH" = "x86_64"],
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[ndk_matching_libcxx_shared_so=$ndk_candidate])])
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AS_IF([test -n "$ndk_matching_libcxx_shared_so"],
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[with_ndk_cxx_shared=$ndk_matching_libcxx_shared_so])
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done])])
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AS_IF([test -z "$with_ndk_cxx_shared"],[AC_MSG_RESULT([no])
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AC_MSG_WARN([The C++ standard library could not be found. \
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If you try to build Emacs with a dependency that requires the C++ standard \
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library, Emacs will not build correctly, unless you manually specify the \
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name of an appropriate ``libc++_shared.so'' binary.])],
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[AC_MSG_RESULT([$with_ndk_cxx_shared])])
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ndk_CXX_SHARED=$with_ndk_cxx_shared
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# These variables have now been found.
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])
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# ndk_SEARCH_MODULE(MODULE, NAME, ACTION-IF-FOUND, [ACTION-IF-NOT-FOUND])
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# -----------------------------------------------------------------------
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# Search for a module named MODULE in `with_ndk_path'. Add the file
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# name of the module's Android.mk file to the variable ndk_MAKEFILES.
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# Set NAME_CFLAGS and NAME_LIBS to the appropriate values. Then, call
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# ACTION-IF-FOUND, or ACTION-IF-NOT-FOUND upon failure.
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#
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# Resolve any imports specified by MODULE, and expand AC_MSG_ERROR
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# with a suitable error message if imports were not found.
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AC_DEFUN([ndk_SEARCH_MODULE],
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[
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module_name=
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ndk_module=$1
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ndk_replace_pkg_config_package
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AC_MSG_CHECKING([for Android.mk that builds $ndk_module])
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for ndk_android_mk in $ndk_module_files; do
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# Read this Android.mk file. Set NDK_ROOT to /tmp: the Android in
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# tree build system sets it to a meaning value, but build files just
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# use it to test whether or not the NDK is being used.
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ndk_commands=`ndk_run_test`
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eval "$ndk_commands"
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if test -n "$module_name"; then
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break;
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fi
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done
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if test -z "$module_name"; then
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AC_MSG_RESULT([no])
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$4
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else
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if test -n "$module_cxx_deps"; then
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ndk_ANY_CXX=yes
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fi
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if test "$ndk_ANY_CXX" = "yes" && test -z "$with_ndk_cxx_shared"; then
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AC_MSG_ERROR([The module $1 requires the C++ standard library \
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(libc++_shared.so), but it was not found.])
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fi
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$2[]_CFLAGS="[$]$2[]_CFLAGS $module_cflags $module_includes"
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$2[]_LIBS="[$]$2[]_LIBS $module_ldflags"
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ndk_MAKEFILES="$ndk_MAKEFILES $ndk_android_mk"
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ndk_MODULES="$ndk_MODULES $module_target"
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AC_MSG_RESULT([yes])
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$3
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# Now, resolve imports. Make sure the imports' Makefiles comes
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# before ndk_MAKEFILES; likewise for its includes.
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ndk_import_includes=
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for ndk_module in $module_imports; do
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ndk_resolve_import_module $ndk_module
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$2[]_CFLAGS="$ndk_import_includes [$]$2[]_CFLAGS"
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done
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fi
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])
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# ndk_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
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# [ACTION-IF-NOT-FOUND])
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# --------------------------------------------------------------
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# Just like `PKG_CHECK_MODULES'. However, it uses the ndk-build
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# system instead.
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AC_DEFUN([ndk_CHECK_MODULES],
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[
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ndk_modules=
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ndk_parse_pkg_config_string "$2"
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ndk_found=no
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for module in $ndk_modules; do
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ndk_SEARCH_MODULE([$module], [$1], [ndk_found=yes], [ndk_found=no])
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done
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AS_IF([test "$ndk_found" = "yes"],[$3],[$4])
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])
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# ndk_CONFIG_FILES
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# -------------------------------------------------------------
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# Write out the NDK build Makefile with the appropriate variables
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# set if the NDK has been initialized.
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AC_DEFUN_ONCE([ndk_CONFIG_FILES],
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[
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if test "$ndk_INITIALIZED" = "yes"; then
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NDK_BUILD_ANDROID_MK="$ndk_MAKEFILES"
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NDK_BUILD_ARCH=$ndk_ARCH
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NDK_BUILD_ABI=$ndk_ABI
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NDK_BUILD_SDK=$ndk_API
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NDK_BUILD_CC=$CC
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NDK_BUILD_AR=$AR
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NDK_BUILD_MODULES="$ndk_MODULES"
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NDK_BUILD_CXX_SHARED="$ndk_CXX_SHARED"
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NDK_BUILD_ANY_CXX_MODULE=$ndk_ANY_CXX
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NDK_BUILD_CFLAGS="$ndk_BUILD_CFLAGS"
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AC_SUBST([NDK_BUILD_ANDROID_MK])
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AC_SUBST([NDK_BUILD_ARCH])
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AC_SUBST([NDK_BUILD_ABI])
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AC_SUBST([NDK_BUILD_SDK])
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AC_SUBST([NDK_BUILD_CC])
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AC_SUBST([NDK_BUILD_AR])
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AC_SUBST([NDK_BUILD_NASM])
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AC_SUBST([NDK_BUILD_MODULES])
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AC_SUBST([NDK_BUILD_CXX_SHARED])
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AC_SUBST([NDK_BUILD_ANY_CXX_MODULE])
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AC_SUBST([NDK_BUILD_CFLAGS])
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AC_CONFIG_FILES([$ndk_DIR/Makefile])
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AC_CONFIG_FILES([$ndk_DIR/ndk-build.mk])
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fi
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])
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