boost.program_options compile problems on Android

[Berkus <berkus@…>]

Hello, in attempt to build boost for android with more or less reasonable strict settings (-Werror) I uncovered some bugs which I cannot report on github because these projects have Issues disabled.

clang-darwin.compile.c++ android-build/boost/bin.v2/ 
libs/program_options/build/clang-darwin-5.0~x86/debug/ 
address-model-32/link-stati 
c/target-os-android/threading-multi/cmdline.o 
libs/program_options/src/cmdline.cpp:104:41: error: declaration shadows a 
field of 'boost::program_options::detail::cmdline' [-Werror 
,-Wshadow] 
    cmdline::init(const vector<string>& args) 
                                        ^ 
./boost/program_options/detail/cmdline.hpp:139:34: note: previous 
declaration is here 
        std::vector<std::string> args; 
                                 ^ 
libs/program_options/src/cmdline.cpp:508:48: error: declaration shadows a 
field of 'boost::program_options::detail::cmdline' [-Werror 
,-Wshadow] 
    cmdline::parse_long_option(vector<string>& args) 
                                               ^ 
./boost/program_options/detail/cmdline.hpp:139:34: note: previous 
declaration is here 
        std::vector<std::string> args; 
                                 ^ 
libs/program_options/src/cmdline.cpp:545:49: error: declaration shadows a 
field of 'boost::program_options::detail::cmdline' [-Werror,-Wshadow] 
    cmdline::parse_short_option(vector<string>& args) 
                                                ^ 
./boost/program_options/detail/cmdline.hpp:139:34: note: previous 
declaration is here 
        std::vector<std::string> args; 
                                 ^ 
libs/program_options/src/cmdline.cpp:611:47: error: declaration shadows a 
field of 'boost::program_options::detail::cmdline' [-Werror,-Wshadow] 
    cmdline::parse_dos_option(vector<string>& args) 
                                              ^ 
./boost/program_options/detail/cmdline.hpp:139:34: note: previous 
declaration is here 
        std::vector<std::string> args; 
                                 ^ 
libs/program_options/src/cmdline.cpp:632:58: error: declaration shadows a 
field of 'boost::program_options::detail::cmdline' [-Werror,-Wshadow] 
    cmdline::parse_disguised_long_option(vector<string>& args) 
                                                         ^ 
./boost/program_options/detail/cmdline.hpp:139:34: note: previous 
declaration is here 
        std::vector<std::string> args; 
                                 ^ 
libs/program_options/src/cmdline.cpp:663:47: error: declaration shadows a 
field of 'boost::program_options::detail::cmdline' [-Werror,-Wshadow] 
    cmdline::parse_terminator(vector<string>& args) 
                                              ^ 
./boost/program_options/detail/cmdline.hpp:139:34: note: previous 
declaration is here 
        std::vector<std::string> args; 
                                 ^ 
libs/program_options/src/cmdline.cpp:683:55: error: declaration shadows a 
field of 'boost::program_options::detail::cmdline' [-Werror,-Wshadow] 
    cmdline::handle_additional_parser(vector<string>& args) 
                                                      ^ 
./boost/program_options/detail/cmdline.hpp:139:34: note: previous 
declaration is here 
        std::vector<std::string> args; 
                                 ^ 
7 errors generated. 
    "/usr/local/opt/android-ndk/android-ndk-r16-beta1// 
toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++" 
"-DBOOST_AC_USE_PTHREADS" "-DBOOST_SP_USE_PTHREADS" "-fvisibility=hidden" 
"-fvisibility-inlines-hidden" "-Wno-unused-local-typedef" -x c++ -std=c++14 
-O0 -g -O0 -fno-inline -Wall -g --target=i686-none-linux-android 
--gcc-toolchain=/usr/local/opt/android-ndk/android-ndk- 
r16-beta1//toolchains/x86-4.9/prebuilt/darwin-x86_64 
--sysroot=/usr/local/opt/android-ndk/android-ndk-r16-beta1//sysroot 
-isystem /usr/local/opt/android-ndk/android-ndk-r16-beta1// 
sources/cxx-stl/llvm-libc++/include -isystem /usr/local/opt/android-ndk/ 
android-ndk-r16-beta1//sources/cxx-stl/llvm-libc++abi/include -isystem 
/usr/local/opt/android-ndk/android-ndk-r16-beta1//sources/android/support/include 
-isystem /usr/local/opt/android-ndk/android-ndk-r16-beta1//sysroot/usr/include 
-isystem /usr/local/opt/android-ndk/android-ndk-r16-beta1// 
sysroot/usr/include/i686-linux-android -DANDROID -D__ANDROID_API__=21 
-ffunction-sections -funwind-tables -fstack-protector-strong 
-fno-limit-debug-info -fPIC -no-canonical-prefixes -mstackrealign 
-Wa,--noexecstack -Wformat -Werror=format-security -Wall -Werror -Wshadow 
-march=i686 -DBOOST_ALL_NO_LIB=1 -D_LITTLE_ENDIAN -I"." -c -o 
"android-build/boost/bin.v2/libs/program_options/build/ 
clang-darwin-5.0~x86/debug/address-model-32/link-static/ 
target-os-android/threading-multi/cmdline.o" "libs/program_options/src/ 
cmdline.cpp" 

[Berkus <berkus@…>]

This is using clang toolchain on Android NDK r16 beta1.

​Reference to user-config.jam for the build

[Berkus <berkus@…>]

Xref ​https://github.com/boostorg/program_options/issues/35