How build the Termux-x11 application?

[foryoung2018]

I got a lot of native code error, such as:

D:/xwindowsystem/termux-x11/app/src/main/cpp/xserver/os/xstrans.c:17:10: fatal error: 'X11/Xtrans/transport.c' file not found

D:/xwindowsystem/termux-x11/app/src/main/cpp/xserver/os/xdmauth.c:45:10: fatal error: 'X11/Xtrans/Xtrans.h' file not found

D:/xwindowsystem/termux-x11/app/src/main/cpp/xserver/os/io.c:67:10: fatal error: 'X11/Xtrans/Xtrans.h' file not found

Maybe include path is wrong? #include <X11/Xtrans/Xtrans.h> will be cpp/libxtrans/Xtrans.h ?

[twaik]

1. You did not clone submodules. https://github.com/termux/termux-x11/?tab=readme-ov-file#submodules-caveat
2. Windows building is not supported since you must have unix tools and gnu asm cross-compiler not available for Windows.

[foryoung2018]

I want to find out the way how to build a X11 server on Android, there is no xlib/xcb on Android platform. The best way is build and run it, can you give some help? Thanks

[twaik]

termux-x11 source already contains everything needed to build it...

[foryoung2018]

I'm trying build it on ubuntu, stilly I got some error, but it maybe ndk toolchain path problem.

  /home/huyang/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android26 --sysroot=/home/huyang/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/linux-x86_64/sysroot  -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/pixman -I/home/huyang/dev/code/termux-x11/app/.cxx/Debug/3i5c1g3c/arm64-v8a -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fexceptions -O2 -g -DNDEBUG -fPIC -DHAVE_BUILTIN_CLZ=1 -DHAVE_PTHREADS=1 -DPACKAGE=\"pixman\" -DTLS=__thread -DSIZEOF_LONG=8 -DUSE_OPENMP=1 -DUSE_ARM_A64_NEON=1 -fno-integrated-as -B /usr/aarch64-linux-gnu/bin -std=gnu11 -MD -MT CMakeFiles/pixman.dir/pixman/pixman/pixman-x86.c.o -MF CMakeFiles/pixman.dir/pixman/pixman/pixman-x86.c.o.d -o CMakeFiles/pixman.dir/pixman/pixman/pixman-x86.c.o -c /home/huyang/dev/code/termux-x11/app/src/main/cpp/pixman/pixman/pixman-x86.c
  /usr/bin/as: unrecognized option '-EL'

And strangely there is no caveat in your gitmodules file https://github.com/termux/termux-x11/blob/master/.gitmodules

[twaik]

And strangely there is no caveat

"caveat" is not a submodule...

/usr/bin/as: unrecognized option '-EL'

You did not install cross-compiler.

sudo apt install binutils-arm-linux-gnueabihf binutils-aarch64-linux-gnu

[foryoung2018]

Yes, Many thanks. I build is on ubuntu and pull all module and install cross-comiler like you say.

Build return many can't find "<GL/gl.h>":

  /home/huyang/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android26 --sysroot=/home/huyang/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/linux-x86_64/sysroot  -I/home/huyang/dev/code/termux-x11/app/.cxx/Debug/3i5c1g3c/arm64-v8a -I/home/huyang/dev/code/termux-x11/app/.cxx/Debug/3i5c1g3c/arm64-v8a/xserver -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/libxfont/include -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/pixman/pixman -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xorgproto/include -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/libxkbfile/include -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/Xext -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/Xi -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/composite -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/damageext -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/fb -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/mi -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/miext/damage -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/miext/shadow -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/miext/sync -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/dbe -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/dri3 -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/include -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/present -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/randr -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/render -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/xfixes -I/home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/glx -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fexceptions -O2 -g -DNDEBUG -fPIC -Wall -Wpointer-arith -Wmissing-declarations -Wformat=2 -Winvalid-pch -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Wbad-function-cast -Wold-style-definition -Wunused -Wuninitialized -Wshadow -Wmissing-noreturn -Wmissing-format-attribute -Wredundant-decls -Werror=implicit -Werror=nonnull -Werror=init-self -Werror=main -Werror=missing-braces -Werror=sequence-point -Werror=return-type -Werror=trigraphs -Werror=array-bounds -Werror=write-strings -Werror=address -Werror=int-to-pointer-cast -Werror=pointer-to-int-cast -fno-strict-aliasing -Wno-unused-parameter -Wno-unused-variable -std=gnu99 -DHAVE_DIX_CONFIG_H -fvisibility=hidden -fPIC -D_DEFAULT_SOURCE -D_BSD_SOURCE -DHAS_FCHOWN -DHAS_STICKY_DIR_BIT "-D_PATH_TMP=getenv(\"TMPDIR\")?:\"/tmp\"" -include /home/huyang/dev/code/termux-x11/app/src/main/cpp/lorie/shm/shm.h -D_XSERVER64=1 -std=gnu11 -MD -MT CMakeFiles/xserver_glx.dir/xserver/glx/glxext.c.o -MF CMakeFiles/xserver_glx.dir/xserver/glx/glxext.c.o.d -o CMakeFiles/xserver_glx.dir/xserver/glx/glxext.c.o -c /home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/glx/glxext.c
  In file included from /home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/glx/glxext.c:36:
  /home/huyang/dev/code/termux-x11/app/src/main/cpp/xserver/glx/glxserver.h:49:10: fatal error: 'GL/gl.h' file not found

[twaik]

Definitely you are doing something wrong.

[foryoung2018]

What's the NDK version is suitable？

[twaik]

Latest I think. https://github.com/termux/termux-x11/blob/71d1243bc68548a46703ca4a53e30d3b75083b2f/.github/workflows/debug_build.yml#L22-L50

[foryoung2018]

Yes I build it successful, Thanks