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Fix Android build instructions #687

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Fix Android build instructions #687

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jpellegrini
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  • In recent Android versions, one needs to pass LDFLAGS to point ld to the right path
  • ld itself is in a different package, binutils-is-llvm

Should fix #658

@jpellegrini
Fix Android build instructions
c153353 
* In recent Android versions, one needs to pass LDFLAGS to point
  ld to the right path
* ld itself is in a different package, binutils-is-llvm
@jpellegrini
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However, in Android loading libraries doesn't seem to work, because %library-prefix is not set properly.

In extraconf.h, this is what we have:

#define PREFIXDIR               "/data/data/com.termux/files/usr"
#define SCMDIR                  "${datarootdir}"
#define DEFAULT_BOOT_FILE       "${datarootdir}/boot.img"
#define EXECDIR                 "${exec_prefix}/lib"
#define BUILD_OS                "Linux-4.14.113-g1c8cbedf56fe"

So we will have:

stklos> (load-path)
("." "${exec_prefix}/lib" "${datarootdir}")

Now if I do

./configure LDFLAGS=-L/system/lib64/  --prefix /data/data/com.termux/files/usr/  
                   --datadir=/data/data/com.termux/files/usr/share/stklos 
                   --libdir=/data/data/com.termux/files/usr/lib/stklos

Then STklos will not look for .so files, even when loading readline:

~/STklos $ stklos
#[condition &error-message 510340201536]: cannot open object file /data/data/com.termux/files/usr/lib/stklos/readline-complete.so (dlopen failed: cannot locate symbol "rl_completer_word_break_characters" referenced by "/data/data/com.termux/files/usr/lib/stklos/readline-complete.so"...)
**** FATAL ERROR: no handler present!
ABORT

But if I use the -n flag,

~/STklos$ stklos -n
  \    STklos version 2.00.565 (unstable -- 6338e863)
   \   Copyright (C) 1999-2024 Erick Gallesio <[email protected]>
  / \  [Linux-4.14.113-g1c8cbedf56fe-aarch64/pthreads/readline/utf8]
 /   \ Type ',h' for help
stklos> (import (scheme list))
stklos>

It loads libraries...

This only happens in Android...

@jpellegrini
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On my Android phone:

$ strings /data/data/com.termux/files/usr/lib/stklos/2.10/readline-complete.so|grep rl_completer_word_break_characters
rl_completer_word_break_characters
rl_completer_word_break_characters

On my notebook:

strings /usr/local/lib/stklos/2.10/readline-complete.so |grep rl_completer_word_break_characters
rl_completer_word_break_characters
rl_completer_word_break_characters
rl_completer_word_break_characters

One more reference on the notebook...

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Small build problem on android
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@jpellegrini