Re: Compile problem when cross compiling

[Bruno Haible]

Hi,

> some problem trying to cross compile (see below).
> ...
> v0.22.5
> 
> xport NDK=/home/user/Android/Sdk/ndk/26.1.10909125
> export TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64
> export TARGET=aarch64-linux-android
> export API=25
> export AR=$TOOLCHAIN/bin/llvm-ar
> export CC=$TOOLCHAIN/bin/$TARGET$API-clang
> export AS=$CC
> export CXX=$TOOLCHAIN/bin/$TARGET$API-clang++
> export LD=$TOOLCHAIN/bin/ld
> export RANLIB=$TOOLCHAIN/bin/llvm-ranlib
> export STRIP=$TOOLCHAIN/bin/llvm-strip
> 
> PATH=$PATH:$TOOLCHAIN/bin/
> 
> autopull.sh
> 
> autogen.sh
> 
> ./configure --host=$TARGET
> 
> make
> 
> /home/user/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android25-clang
>  
> -DHAVE_CONFIG_H -I. -I..  -I. -I. -I.. -I.. -Iglib -DIN_LIBTEXTSTYLE 
> -DLIBXML_STATIC    -I./libcroco -DDEPENDS_ON_LIBICONV=1  -Wall 
> -Wdate-time -Wdisabled-optimization -Wdouble-promotion -Wextra 
> -Winit-self -Winvalid-pch -Wmissing-include-dirs -Wnested-externs 
> -Wnull-dereference -Woverlength-strings -Wpacked -Wpointer-arith 
> -Wstack-protector -Wstrict-overflow -Wsystem-headers -Wuninitialized 
> -Wunknown-pragmas -Wvariadic-macros -Wwrite-strings -Wformat=2 
> -Wno-empty-body -Wno-cast-align -Wno-format-nonliteral -Wno-sign-compare 
> -Wno-type-limits -Wno-unused-parameter -g -O2 -Wall -w -c ialloc.c
> /home/user/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android25-clang
>  
> -DHAVE_CONFIG_H -I. -I..  -I. -I. -I.. -I.. -Iglib -DIN_LIBTEXTSTYLE 
> -DLIBXML_STATIC    -I./libcroco -DDEPENDS_ON_LIBICONV=1  -Wall 
> -Wdate-time -Wdisabled-optimization -Wdouble-promotion -Wextra 
> -Winit-self -Winvalid-pch -Wmissing-include-dirs -Wnested-externs 
> -Wnull-dereference -Woverlength-strings -Wpacked -Wpointer-arith 
> -Wstack-protector -Wstrict-overflow -Wsystem-headers -Wuninitialized 
> -Wunknown-pragmas -Wvariadic-macros -Wwrite-strings -Wformat=2 
> -Wno-empty-body -Wno-cast-align -Wno-format-nonliteral -Wno-sign-compare 
> -Wno-type-limits -Wno-unused-parameter -g -O2 -Wall -w -c iconv-ostream.c
> iconv-ostream.c:311:3: error: incompatible function pointer types 
> initializing 'void (*)(iconv_ostream_t, ostream_flush_scope_t)' (aka 
> 'void (*)(struct any_ostream_representation *, ostream_flush_scope_t)') 
> with an expression of type 'void (iconv_ostream_t)' (aka 'void (struct 
> any_ostream_representation *)') [-Wincompatible-function-pointer-types]
>    iconv_ostream__flush,
>    ^~~~~~~~~~~~~~~~~~~~
> 1 error generated.

It looks like HAVE_ICONV_H is not defined in your build. This means that
the prerequisite iconv API is not available (or deficient) on your platform.
See the DEPENDENCIES file. This fix is to build and install GNU libiconv
first, and pass a --with-libiconv-prefix option to configure.

Bruno