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cab91300d0
emacs/m4/ndk-build.m4
Po Lu cab91300d0 Enable caching values generated by the Android build system 
* build-aux/ndk-build-helper-1.mk:

* build-aux/ndk-build-helper-2.mk:

* build-aux/ndk-build-helper.mk: Do not generate file names with
redundant directory separators, to port to systems where the
semantics of this are undefined.

* configure.ac: Provide a cache file to the recursive invocation
of configure if one is specified for the initial.

* cross/ndk-build/Makefile.in (my-dir): Better conform to the
original ndk-build by generating directory names with no
trailing separator.

* m4/ndk-build.m4 (ndk_resolve_import_module, ndk_SEARCH_MODULE):
Cache the names of Android.mk files and the commands produced
from them.
2024-06-30 12:10:21 +08:00

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dnl Copyright (C) 2023-2024 Free Software Foundation, Inc.
dnl This file is part of GNU Emacs.
dnl GNU Emacs is free software: you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation, either version 3 of the License, or
dnl (at your option) any later version.
dnl GNU Emacs is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl You should have received a copy of the GNU General Public License
dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
# Support for building Emacs with dependencies using the Android NDK
# build system.
AC_ARG_WITH([ndk_path],
[AS_HELP_STRING([--with-ndk-path],
[find Android libraries in these directories])])
AC_ARG_WITH([ndk_cxx],
[AS_HELP_STRING([--with-ndk-cxx],
[name of the C++ compiler included with the NDK])])
# ndk_INIT(ABI, API, DIR, CFLAGS)
# -------------------------------
# Initialize the Android NDK. ABI is the ABI being built for.
# API is the API version being built for.
# CFLAGS is a list of compiler flags.
# As a side effect, set the variable ndk_INITIALIZED to true.
# DIR should be a directory containing the Makefile.in actually
# implementing the Android NDK build system.
AC_DEFUN([ndk_INIT],
[
# Look for Android.mk files.
ndk_module_files=
for file in $with_ndk_path; do
if test -f $file/Android.mk; then
ndk_module_files="$ndk_module_files$file/Android.mk "
fi
done
AC_REQUIRE_AUX_FILE([ndk-build-helper.mk])
ndk_AUX_DIR=$ac_aux_dir
ndk_ABI=$1
ndk_MODULES=
ndk_MAKEFILES=
ndk_INITIALIZED=yes
ndk_API=$2
ndk_DIR=$3
ndk_ANY_CXX=
ndk_BUILD_CFLAGS="$4"
ndk_working_cxx=no
ndk_CXX_SHARED=
AS_CASE(["$ndk_ABI"],
[*arm64*], [ndk_ARCH=arm64],
[*arm*], [ndk_ARCH=arm],
[*x86_64*], [ndk_ARCH=x86_64],
[*x86*], [ndk_ARCH=x86],
[*mips64*], [ndk_ARCH=mips64],
[*mips*], [ndk_ARCH=mips],
[AC_MSG_ERROR([Failed to determine Android device architecture])])
# This is a map between pkg-config style package names and Android
# ones.
ndk_package_map="libwebpdemux:webpdemux libxml-2.0:libxml2"
ndk_package_map="$ndk_package_map sqlite3:libsqlite_static_minimal"
ndk_package_map="$ndk_package_map MagickWand:libmagickwand-7 lcms2:liblcms2"
# Replace ndk_module with the appropriate Android module name if it is
# found in ndk_package_map.
ndk_replace_pkg_config_package () {
for ndk_stuff in $ndk_package_map; do
ndk_key=`AS_ECHO([$ndk_stuff]) | cut -d: -f1`
ndk_value=`AS_ECHO([$ndk_stuff]) | cut -d: -f2`
if test "$ndk_key" = "$ndk_module"; then
ndk_module="$ndk_value"
break
fi
done
}
# Run the Makefile helper script for the Android.mk file.
ndk_run_test () {
# Figure out where the helper Makefile is.
ndk_build_helper_file="${ndk_AUX_DIR}ndk-build-helper.mk"
ndk_module_extract_awk="${ndk_AUX_DIR}ndk-module-extract.awk"
ndk_dir=`AS_DIRNAME([$ndk_android_mk])`
# Now call Make with the right arguments.
"$MAKE" -s -f "$ndk_build_helper_file" EMACS_SRCDIR=`pwd` \
EMACS_ABI="$ndk_ABI" ANDROID_MAKEFILE="$ndk_android_mk" \
NDK_BUILD_DIR="$ndk_DIR" NDK_ROOT="/tmp" \
ANDROID_MODULE_DIRECTORY="$ndk_dir" BUILD_AUXDIR=$ndk_AUX_DIR \
NDK_BUILD_ARCH="$ndk_ARCH" 2>&AS_MESSAGE_LOG_FD >conftest.ndk
# Read the output.
cat conftest.ndk | awk -f "$ndk_module_extract_awk" MODULE="$ndk_module"
# Remove the temporary file.
rm -f conftest.ndk
}
# ndk_parse_pkg_config_string PKG_CONFIG_STRING
# ---------------------------------------------
# Parse a pkg-config style list of modules. Place the resulting list
# in ndk_modules.
ndk_parse_pkg_config_string () {
ndk_input=[$]1
ndk_modules=
while test -n "$ndk_input"; do
ndk_str=`AS_ECHO_N(["$ndk_input"]) | cut -f1 -d' '`
ndk_input=`AS_ECHO_N(["$ndk_input"]) | cut -s -f2- -d' '`
if test "$ndk_str" = ">=" || test "$ndk_str" = "<=" \
|| test "$ndk_str" = ">" || test "$ndk_str" = "<" \
|| test "$ndk_str" = "!="; then
ndk_input=`AS_ECHO_N(["$ndk_input"]) | cut -s -f2- -d' '`
else
ndk_modules="$ndk_modules$ndk_str "
fi
done
}
# ndk_resolve_import_module MODULE
# --------------------------------
# Resolve MODULE, a single import. Prepend its makefile to
# ndk_MAKEFILES if found. Also, prepend all includes to the variable
# ndk_import_includes.
ndk_resolve_import_module () {
module_name=
ndk_module=[$]1
AC_MSG_CHECKING([for imported $ndk_module])
AC_CACHE_VAL([AS_TR_SH([ndk_cv_commands_$ndk_module])],
[for ndk_android_mk in $ndk_module_files; do
# Read this Android.mk file. Set NDK_ROOT to /tmp: the Android in
# tree build system sets it to a meaningful value, but build files
# just use it to test whether or not the NDK is being used.
ndk_commands=`ndk_run_test`
eval "$ndk_commands"
if test -n "$module_name"; then
# Guarantee that evaluation of the cached value will also set
# `ndk_android_mk'.
ndk_commands="$ndk_commands ndk_android_mk=$ndk_android_mk"
break;
fi
done
AS_IF([test -z "$module_name"],
[AS_VAR_SET([AS_TR_SH([ndk_cv_commands_$ndk_module])],
[""])],
[AS_VAR_SET([AS_TR_SH([ndk_cv_commands_$ndk_module])],
[$ndk_commands])])])
# Copy the computed value into ndk_commands.
AS_VAR_COPY([ndk_commands], [AS_TR_SH([ndk_cv_commands_$ndk_module])])
eval "$ndk_commands"
# Print the outcome of the test.
AS_IF([test -n "$module_name"], [AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
AC_MSG_ERROR([The module currently being built has imported [$]1, but \
that could not be found in the list of directories specified in \
`--with-ndk-path'.])])
if test -n "$module_cxx_deps"; then
ndk_ANY_CXX=yes
fi
AS_IF([test "$module_cxx_deps" = "yes" && test -z "$ndk_CXX_STL" \
&& test -z "$ndk_CXX_LDFLAGS"],
[AC_MSG_ERROR([The module $1 requires a C++ standard library,
but none were found.])])
AS_IF([test "$module_cxx_deps" = "yes" && test "$ndk_working_cxx" != "yes"],
[AC_MSG_ERROR([The module [$]1 requires the C++ standard library,
but a working C++ compiler was not found.])])
# Make sure the module is prepended.
ndk_MODULES="$ndk_MODULES $module_target"
ndk_MAKEFILES="$ndk_android_mk $ndk_MAKEFILES"
ndk_import_includes="$module_includes $ndk_import_includes"
# Now recursively resolve this module's imports.
for ndk_module in $module_imports; do
ndk_resolve_import_module $ndk_module
done
}
# ndk_filter_cc_for_cxx
# ---------------------
# Run through $CC, removing any options that are not suitable for
# use in a C++ compiler.
ndk_filter_cc_for_cxx () {
for ndk_word in $CC; do
AS_CASE([$ndk_word], [*-std=*], [],
[AS_ECHO_N(["$ndk_word "])])
done
}
# ndk_subst_cc_onto_cxx
# ---------------------
# Print the value of $CXX, followed by any innocent looking options
# in $CC.
ndk_subst_cc_onto_cxx () {
AS_ECHO_N(["$CXX "])
ndk_flag=
for ndk_word in `AS_ECHO_N(["$CC"]) | cut -s -f2- -d' '`; do
AS_IF([test "$ndk_flag" = "yes"],
[AS_ECHO_N(["$ndk_word "])
ndk_flag=no],
[AS_CASE([$ndk_word],
[*-sysroot=*],
[AS_ECHO_N(["$ndk_word "])],
[*-isystem*],
[AS_ECHO_N(["$ndk_word "])
ndk_flag=yes],
[*-sysroot*],
[AS_ECHO_N(["$ndk_word "])
ndk_flag=yes],
[-D__ANDROID_API__*],
[AS_ECHO_N(["$ndk_word "])])])
done
}
# ndk_subst_cflags_onto_cxx
# ---------------------
# Print any options in CFLAGS also suitable for a C++ compiler.
ndk_subst_cflags_onto_cxx () {
ndk_flag=
for ndk_word in $CFLAGS; do
AS_IF([test "$ndk_flag" = "yes"],
[AS_ECHO_N(["$ndk_word "])
ndk_flag=no],
[AS_CASE([$ndk_word],
[*-sysroot=*],
[AS_ECHO_N(["$ndk_word "])],
[*-isystem*],
[AS_ECHO_N(["$ndk_word "])
ndk_flag=yes],
[*-I*],
[AS_ECHO_N(["$ndk_word "])
ndk_flag=yes],
[*-sysroot*],
[AS_ECHO_N(["$ndk_word "])
ndk_flag=yes],
[-D__ANDROID_API__*],
[AS_ECHO_N(["$ndk_word "])])])
done
}
# Detect the installation directory and type of the NDK being used.
ndk_install_dir=
ndk_toolchain_type=
AC_MSG_CHECKING([for the directory where the NDK is installed])
dnl If the install directory isn't available, repeat the search over
dnl each entry in the programs directory.
ndk_programs_dirs=`$CC -print-search-dirs | sed -n "s/^programs:[[\t ]]*=\?\(.*\)/\1/p"`
ndk_save_IFS=$IFS; IFS=:
for ndk_dir in $ndk_programs_dirs; do
if test -d "$ndk_dir"; then :; else
continue
fi
ndk_dir=`cd "$ndk_dir"; pwd`
while test "$ndk_dir" != "/" && test -z "$ndk_toolchain_type"; do
ndk_dir=`AS_DIRNAME([$ndk_dir])`
AS_IF([test -d "$ndk_dir/bin" && test -d "$ndk_dir/lib"],
[dnl The directory reached is most likely either the directory
dnl holding prebuilt binaries in a combined toolchain or the
dnl directory holding a standalone toolchain itself.
dnl
dnl Distinguish between the two by verifying the name of the
dnl parent directory (and its parent).
ndk_dir1=`AS_DIRNAME(["$ndk_dir"])`
ndk_basename=`AS_BASENAME(["$ndk_dir1"])`
AS_IF([test "$ndk_basename" = "prebuilt"],
[dnl Directories named "prebuilt" are exclusively present in
dnl combined toolchains, where they are children of the
dnl base directory or, in recent releases, a directory
dnl within the base directory. Continue searching for the
dnl base directory.
ndk_toolchain_type=combined
while test "$ndk_dir1" != "/"; do
AS_IF([test -d "$ndk_dir1/toolchains" \
&& test -d "$ndk_dir1/sources"],
[ndk_install_dir=$ndk_dir1
break])
ndk_dir1=`AS_DIRNAME(["$ndk_dir1"])`
done],
[ndk_toolchain_type=standalone
ndk_install_dir=$ndk_dir])])
done
AS_IF([test -n "$ndk_toolchain_type"],
[break])
done
IFS=$ndk_save_IFS
AS_IF([test -z "$ndk_install_dir"],
[AC_MSG_RESULT([unknown])
AC_MSG_WARN([The NDK installation directory could not be \
derived from the compiler.])],
[AC_MSG_RESULT([$ndk_install_dir ($ndk_toolchain_type)])])
# Look for a suitable ar and ranlib in the same directory as the C
# compiler.
ndk_cc_firstword=`AS_ECHO(["$CC"]) | cut -d' ' -f1`
ndk_where_cc=`which $ndk_cc_firstword`
ndk_ar_search_path=$PATH
ndk_ranlib_search_path=$RANLIB
# First, try to find $host_alias-ar in PATH.
AC_PATH_PROGS([AR], [$host_alias-ar], [], [$ndk_ar_search_path])
AS_IF([test -z "$AR"],[
# Next, try finding either that or llvm-ar in the directory holding
# CC.
ndk_ar_search_path="`AS_DIRNAME([$ndk_where_cc])`:$ndk_ar_search_path"
AC_PATH_PROGS([AR], [$host_alias-ar llvm-ar], [], [$ndk_ar_search_path])])
# First, try to find $host_alias-ranlib in PATH.
AC_PATH_PROGS([RANLIB], [$host_alias-ranlib], [], [$ndk_ranlib_search_path])
AS_IF([test -z "$RANLIB"],[
# Next, try finding either that or llvm-ranlib in the directory
# holding CC.
ndk_ranlib_search_path="`AS_DIRNAME([$ndk_where_cc])`:$ndk_ranlib_search_path"
AC_PATH_PROGS([RANLIB], [$host_alias-ranlib llvm-ranlib], [],
[$ndk_ranlib_search_path])])
NDK_BUILD_NASM=
# Next, try to find nasm on x86. This doesn't ship with the NDK.
AS_IF([test "$ndk_ARCH" = "x86" || test "$ndk_ARCH" = "x86_64"],
[AC_CHECK_PROGS([NDK_BUILD_NASM], [nasm])])
# Search for a suitable readelf binary, which is required to generate
# the shared library list loaded on old Android systems.
AC_PATH_PROGS([READELF], [readelf llvm-readelf $host_alias-readelf],
[], [$ndk_ranlib_search_path:$PATH])
AS_IF([test -z "$READELF"],
[AC_MSG_ERROR([A suitable `readelf' utility cannot be located.
Please verify that the Android NDK has been installed correctly,
or install a functioning `readelf' yourself.])])
NDK_BUILD_READELF="$READELF"
# Search for a C++ compiler. Upon failure, pretend the C compiler is a
# C++ compiler and use that instead.
ndk_cc_name=`AS_BASENAME(["${ndk_cc_firstword}"])`
ndk_cxx_name=
AS_CASE([$ndk_cc_name], [*-gcc],
[ndk_cxx_name=`AS_ECHO([$ndk_cc_name]) | sed 's/gcc/g++/'`],
[ndk_cxx_name="${ndk_cc_name}++"])
AS_IF([test -n "$with_ndk_cxx"], [CXX=$with_ndk_cxx],
[AC_PATH_PROGS([CXX], [$ndk_cxx_name],
[], [`AS_DIRNAME(["$ndk_where_cc"])`:$PATH])
AS_IF([test -z "$CXX"], [CXX=`ndk_filter_cc_for_cxx`],
[CXX=`ndk_subst_cc_onto_cxx`])])
# None of the C++ standard libraries installed with Android are
# available to NDK programs, which are expected to select one of several
# standard libraries distributed with the NDK. This library must be
# extracted from the NDK by the program's build system and copied into
# the application directory, and the build system is also expected to
# provide the compiler with suitable options to enable it.
#
# Emacs, on recent releases of the NDK, prefers the libc++ library, the
# most complete of the libraries available, when it detects the presence
# of its headers and libraries in the compiler's search path. Next in
# line are the several libraries located in a directory named `cxx-stl'
# inside the NDK distribution, of which Emacs prefers, in this order,
# the GNU libstdc++, stlport, gabi and the system C++ library. The
# scope of the last two is confined to providing runtime support for
# basic C++ operations, and is useless for compiling most C++
# dependencies whose requirements go beyond such operations.
#
# The NDK comes in two forms. In a "combined toolchain", all C++
# libraries are present in the NDK directory and the responsibility is
# left to the build system to locate and select the best C++ library,
# whereas in a "standalone toolchain" an STL will have already been
# specified a C++ library, besides which no others will be present.
#
# Though Android.mk files are provided by the NDK for each such library,
# Emacs cannot use any of these, both for lack of prebuilt support in
# its ndk-build implementation, and since they are absent from combined
# toolchains.
ndk_CXX_SHARED=
ndk_CXX_STL=
ndk_CXX_LDFLAGS=
AS_IF([test -n "$CXX" && test -n "$ndk_install_dir"],
[ndk_library_dirs=`$CXX -print-search-dirs \
| sed -n "s/^libraries:[[\t ]]*=\?\(.*\)/\1/p"`
AS_IF([test "$ndk_toolchain_type" = "standalone"],
[dnl With a standalone toolchain, just use the first C++ library
dnl present in the compiler's library search path, that being the
dnl only C++ library that will ever be present.
ndk_save_IFS=$IFS; IFS=:
for ndk_dir in $ndk_library_dirs; do
if test -d "$ndk_dir"; then :; else
continue
fi
ndk_dir=`cd "$ndk_dir"; pwd`
if test -f "$ndk_dir/libc++_shared.so"; then
ndk_CXX_SHARED="$ndk_dir/libc++_shared.so"
ndk_CXX_LDFLAGS=-lc++_shared; break
elif test -f "$ndk_dir/libgnustl_shared.so"; then
ndk_CXX_SHARED="$ndk_dir/libgnustl_shared.so"
ndk_CXX_LDFLAGS=-lgnustl_shared; break
elif test -f "$ndk_dir/libstlport_shared.so"; then
ndk_CXX_SHARED="$ndk_dir/libstlport_shared.so"
ndk_CXX_LDFLAGS=-lstlport_shared; break
fi
done
IFS=$ndk_save_IFS],
[dnl Otherwise, search for a suitable standard library
dnl in the order stated above.
dnl
dnl Detect if this compiler is configured to link against libc++ by
dnl default.
AC_MSG_CHECKING([whether compiler defaults to libc++])
cat <<_ACEOF >conftest.cc
#include <string>
#ifndef _LIBCPP_VERSION
Not libc++!
#endif /* _LIBCPP_VERSION */
int
main (void)
{
}
_ACEOF
AS_IF([$CXX conftest.cc -o conftest.o >&AS_MESSAGE_LOG_FD 2>&1],
[dnl The compiler defaults to libc++.
AC_MSG_RESULT([yes])
ndk_save_IFS=$IFS; IFS=:
for ndk_dir in $ndk_library_dirs; do
if test -f "$ndk_dir/libc++_shared.so"; then
ndk_CXX_SHARED="$ndk_dir/libc++_shared.so"
ndk_CXX_LDFLAGS=-lc++_shared; break
fi
done
IFS=$ndk_save_IFS],
[dnl Search for gnustl, stlport, gabi, and failing that, system.
dnl The name of the gabi system root directory varies by GCC
dnl version.
AC_MSG_RESULT([no])
ndk_gcc_version=`($CXX -v 2>&1) \
| sed -n "s/^gcc version \([[0123456789]\+.[0123456789]\+]\).*/\1/p"`
cxx_stl="$ndk_install_dir/sources/cxx-stl"
ndk_cxx_stl_base="$cxx_stl/gnu-libstdc++/$ndk_gcc_version"
AS_IF([test -n "$ndk_gcc_version" \
&& test -d "$ndk_cxx_stl_base/libs/$ndk_ABI"],
[ndk_CXX_LDFLAGS="-L$ndk_cxx_stl_base/libs/$ndk_ABI -lgnustl_shared"
ndk_CXX_LDFLAGS="$ndk_CXX_LDFLAGS -lsupc++"
ndk_CXX_STL="-isystem $ndk_cxx_stl_base/include"
ndk_CXX_STL="$ndk_CXX_STL -isystem $ndk_cxx_stl_base/libs/$ndk_ABI/include"
ndk_CXX_SHARED="$ndk_cxx_stl_base/libs/$ndk_ABI/libgnustl_shared.so"])
AS_IF([test -f "$ndk_CXX_SHARED"], [],
[dnl No STL was located or the library is not reachable.
dnl Search for alternatives.
ndk_CXX_STL=
ndk_CXX_SHARED=
ndk_CXX_LDFLAGS=
ndk_cxx_stl_base="$cxx_stl/stlport"
AS_IF([test -d "$ndk_cxx_stl_base"],
[ndk_CXX_LDFLAGS="-L$ndk_cxx_stl_base/libs/$ndk_ABI -lstlport_shared"
ndk_CXX_STL="-isystem $ndk_cxx_stl_base/stlport"
ndk_CXX_SHARED="$ndk_cxx_stl_base/libs/$ndk_ABI/libstlport_shared.so"])
AS_IF([test -f "$ndk_CXX_SHARED"], [],
[ndk_CXX_STL=
ndk_CXX_SHARED=
ndk_CXX_LDFLAGS=
ndk_cxx_stl_base="$cxx_stl/gabi++"
AS_IF([test -d "$ndk_cxx_stl_base"],
[ndk_CXX_LDFLAGS="-L$ndk_cxx_stl_base/libs/$ndk_ABI -lgabi++_shared"
ndk_CXX_STL="$ndk_CXX_STL -isystem $ndk_cxx_stl_base/include"
ndk_CXX_SHARED="$ndk_cxx_stl_base/libs/$ndk_ABI/lgabi++_shared.so"])])
AS_IF([test -f "$ndk_CXX_SHARED"], [],
[ndk_CXX_STL=
ndk_CXX_SHARED=
ndk_CXX_LDFLAGS=
ndk_cxx_stl_base="$cxx_stl/system"
AS_IF([test -d "$ndk_cxx_stl_base"],
[ndk_CXX_LDFLAGS="-L$ndk_cxx_stl_base/libs/$ndk_ABI -lstdc++"
ndk_CXX_STL="-isystem $ndk_cxx_stl_base/include"
dnl The "system" library is distributed with Android and
dnl need not be present in app packages.
ndk_CXX_SHARED=
dnl Done.
])])])])
rm -f conftest.o])])
AS_ECHO([])
AS_ECHO(["C++ compiler configuration: "])
AS_ECHO([])
AS_ECHO(["Library includes : $ndk_CXX_STL"])
AS_ECHO(["Linker options : $ndk_CXX_LDFLAGS"])
AS_ECHO(["Library file (if any) : $ndk_CXX_SHARED"])
AS_ECHO([])
])
# ndk_LATE_EARLY
# --------------
# Call before ndk_LATE to establish certain variables in time for
# ndk_LATE's C++ compiler detection.
AC_DEFUN([ndk_LATE_EARLY],
[ndk_save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $ndk_CXX_LDFLAGS"
CXXFLAGS="$CXXFLAGS `ndk_subst_cflags_onto_cxx` $ndk_CXX_STL"])
# ndk_LATE
# --------
# Perform late initialization of the ndk-build system by checking for
# required C and C++ headers.
AC_DEFUN([ndk_LATE],
[dnl
AS_IF([test "$ndk_INITIALIZED" = "yes"],[
AS_IF([test -n "$CXX"], [
AC_LANG_PUSH([C++])
AC_CHECK_HEADER([string], [ndk_working_cxx=yes],
[AC_MSG_WARN([Your C++ compiler is not properly configured, as \
the standard library headers could not be found.])])
AC_LANG_POP([C++])])])
LDFLAGS="$ndk_save_LDFLAGS"
])
# ndk_SEARCH_MODULE(MODULE, NAME, ACTION-IF-FOUND, [ACTION-IF-NOT-FOUND])
# -----------------------------------------------------------------------
# Search for a module named MODULE in `with_ndk_path'. Add the file
# name of the module's Android.mk file to the variable ndk_MAKEFILES.
# Set NAME_CFLAGS and NAME_LIBS to the appropriate values. Then, call
# ACTION-IF-FOUND, or ACTION-IF-NOT-FOUND upon failure.
#
# Resolve any imports specified by MODULE, and expand AC_MSG_ERROR
# with a suitable error message if imports were not found.
AC_DEFUN([ndk_SEARCH_MODULE],
[
module_name=
ndk_module=$1
ndk_replace_pkg_config_package
AC_MSG_CHECKING([for Android.mk providing $ndk_module])
AC_CACHE_VAL([AS_TR_SH([ndk_cv_commands_$ndk_module])],
[for ndk_android_mk in $ndk_module_files; do
# Read this Android.mk file. Set NDK_ROOT to /tmp: the Android in
# tree build system sets it to a meaningful value, but build files
# just use it to test whether or not the NDK is being used.
ndk_commands=`ndk_run_test`
eval "$ndk_commands"
if test -n "$module_name"; then
# Guarantee that evaluation of the cached value will also set
# `ndk_android_mk'.
ndk_commands="$ndk_commands ndk_android_mk=$ndk_android_mk"
break;
fi
done
AS_IF([test -n "$module_name"],
[AS_VAR_SET([AS_TR_SH([ndk_cv_commands_$ndk_module])],
[$ndk_commands])],
[AS_VAR_SET([AS_TR_SH([ndk_cv_commands_$ndk_module])], [])])])
AS_VAR_COPY([ndk_commands], [AS_TR_SH([ndk_cv_commands_$ndk_module])])
eval "$ndk_commands"
if test -z "$module_name"; then
AC_MSG_RESULT([no])
$4
else
if test -n "$module_cxx_deps"; then
ndk_ANY_CXX=yes
fi
AS_IF([test "$module_cxx_deps" = "yes" && test -z "$ndk_CXX_STL" \
&& test -z "$ndk_CXX_LDFLAGS"],
[AC_MSG_ERROR([The module $1 requires a C++ standard library,
but none were found.])])
AS_IF([test "$module_cxx_deps" = "yes" && test "$ndk_working_cxx" != "yes"],
[AC_MSG_ERROR([The module [$]1 requires the C++ standard library,
but a working C++ compiler was not found.])])
$2[]_CFLAGS="[$]$2[]_CFLAGS $module_cflags $module_includes"
$2[]_LIBS="[$]$2[]_LIBS $module_ldflags"
ndk_MAKEFILES="$ndk_MAKEFILES $ndk_android_mk"
ndk_MODULES="$ndk_MODULES $module_target"
AC_MSG_RESULT([yes])
$3
# Now, resolve imports. Make sure the imports' Makefiles comes
# before ndk_MAKEFILES; likewise for its includes.
ndk_import_includes=
for ndk_module in $module_imports; do
ndk_resolve_import_module $ndk_module
$2[]_CFLAGS="$ndk_import_includes [$]$2[]_CFLAGS"
done
fi
])
# ndk_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
# [ACTION-IF-NOT-FOUND])
# --------------------------------------------------------------
# Just like `PKG_CHECK_MODULES'. However, it uses the ndk-build
# system instead.
AC_DEFUN([ndk_CHECK_MODULES],
[
ndk_modules=
ndk_parse_pkg_config_string "$2"
ndk_found=no
for module in $ndk_modules; do
ndk_SEARCH_MODULE([$module], [$1], [ndk_found=yes], [ndk_found=no])
done
AS_IF([test "$ndk_found" = "yes"],[$3],[$4])
])
# ndk_CONFIG_FILES
# -------------------------------------------------------------
# Write out the NDK build Makefile with the appropriate variables
# set if the NDK has been initialized.
AC_DEFUN_ONCE([ndk_CONFIG_FILES],
[
if test "$ndk_INITIALIZED" = "yes"; then
NDK_BUILD_ANDROID_MK="$ndk_MAKEFILES"
NDK_BUILD_ARCH=$ndk_ARCH
NDK_BUILD_ABI=$ndk_ABI
NDK_BUILD_SDK=$ndk_API
NDK_BUILD_CC=$CC
NDK_BUILD_CXX=$CXX
NDK_BUILD_AR=$AR
NDK_BUILD_MODULES="$ndk_MODULES"
NDK_BUILD_CXX_SHARED="$ndk_CXX_SHARED"
NDK_BUILD_CXX_STL="$ndk_CXX_STL"
NDK_BUILD_CXX_LDFLAGS="$ndk_CXX_LDFLAGS"
NDK_BUILD_ANY_CXX_MODULE=$ndk_ANY_CXX
NDK_BUILD_CFLAGS="$ndk_BUILD_CFLAGS"
AC_SUBST([NDK_BUILD_ANDROID_MK])
AC_SUBST([NDK_BUILD_ARCH])
AC_SUBST([NDK_BUILD_ABI])
AC_SUBST([NDK_BUILD_SDK])
AC_SUBST([NDK_BUILD_CC])
AC_SUBST([NDK_BUILD_CXX])
AC_SUBST([NDK_BUILD_AR])
AC_SUBST([NDK_BUILD_NASM])
AC_SUBST([NDK_BUILD_MODULES])
AC_SUBST([NDK_BUILD_CXX_SHARED])
AC_SUBST([NDK_BUILD_CXX_STL])
AC_SUBST([NDK_BUILD_CXX_LDFLAGS])
AC_SUBST([NDK_BUILD_ANY_CXX_MODULE])
AC_SUBST([NDK_BUILD_CFLAGS])
AC_SUBST([NDK_BUILD_READELF])
AC_CONFIG_FILES([$ndk_DIR/Makefile])
AC_CONFIG_FILES([$ndk_DIR/ndk-build.mk])
fi
])
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