交叉编译为ARM ocaml的应用 [英] Cross-compiling ocaml apps for ARM

问题描述

我的交叉编译触摸屏驱动器，它带有一个ocaml的校准应用程序。

I'm cross-compiling a touchscreen driver, which comes with an ocaml calibration application.

我试图编译驱动程序和ARM的应用，特别是的BeagleBoard，运行埃。

I'm trying to compile the driver and the application for ARM, in particular, the Beagleboard, running Angström.

它是这样的：

^_^[raziel@Bebop zytouch-driver-20081121]$ source /usr/local/angstrom/arm/environment-setup 
^_^[raziel@Bebop zytouch-driver-20081121]$ make CC=arm-angstrom-linux-gnueabi-gcc 
arm-angstrom-linux-gnueabi-gcc -std=gnu99 -g -O2 -Wall -Wextra -Werror -Wstrict-prototypes -Wmissing-prototypes   -c -o daemon/config.o daemon/config.c
arm-angstrom-linux-gnueabi-gcc -std=gnu99 -g -O2 -Wall -Wextra -Werror -Wstrict-prototypes -Wmissing-prototypes   -c -o daemon/util.o daemon/util.c
arm-angstrom-linux-gnueabi-gcc -std=gnu99 -g -O2 -Wall -Wextra -Werror -Wstrict-prototypes -Wmissing-prototypes   -c -o daemon/debug.o daemon/debug.c
arm-angstrom-linux-gnueabi-gcc -std=gnu99 -g -O2 -Wall -Wextra -Werror -Wstrict-prototypes -Wmissing-prototypes   -c -o daemon/zytouch_usb.o daemon/zytouch_usb.c
arm-angstrom-linux-gnueabi-gcc -std=gnu99 -g -O2 -Wall -Wextra -Werror -Wstrict-prototypes -Wmissing-prototypes   -c -o daemon/zytouchd.o daemon/zytouchd.c
arm-angstrom-linux-gnueabi-gcc daemon/config.o daemon/util.o daemon/debug.o daemon/zytouch_usb.o daemon/zytouchd.o -lX11 -lXtst -lusb -lm -o zytouch-daemon
ocamlopt -cc arm-angstrom-linux-gnueabi-gcc -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A -c -I +lablgtk2 -I +cairo -I +extlib -I calibrate calibrate/version.ml -o calibrate/version.cmx
ocamlopt -cc arm-angstrom-linux-gnueabi-gcc -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A -c -I +lablgtk2 -I +cairo -I +extlib -I calibrate calibrate/util.ml -o calibrate/util.cmx
ocamlopt -cc arm-angstrom-linux-gnueabi-gcc -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A -c -I +lablgtk2 -I +cairo -I +extlib -I calibrate calibrate/config.ml -o calibrate/config.cmx
ocamlopt -cc arm-angstrom-linux-gnueabi-gcc -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A -c -I +lablgtk2 -I +cairo -I +extlib -I calibrate calibrate/orientation.ml -o calibrate/orientation.cmx
ocamlopt -cc arm-angstrom-linux-gnueabi-gcc -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A -c -I +lablgtk2 -I +cairo -I +extlib -I calibrate calibrate/tscalibrate.ml -o calibrate/tscalibrate.cmx
ocamlopt -cc arm-angstrom-linux-gnueabi-gcc -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A -cc arm-angstrom-linux-gnueabi-gcc -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A -I +lablgtk2 -I +cairo -I +extlib -I calibrate extLib.cmxa str.cmxa unix.cmxa lablgtk.cmxa cairo_lablgtk.cmxa cairo.cmxa gtkInit.cmx calibrate/version.cmx calibrate/util.cmx calibrate/config.cmx calibrate/orientation.cmx calibrate/tscalibrate.cmx -o zytouch-calibrate
/usr/local/angstrom/arm/lib/gcc/arm-angstrom-linux-gnueabi/4.3.3/../../../../arm-angstrom-linux-gnueabi/bin/ld: /tmp/camlstartup71ef32.o: Relocations in generic ELF (EM: 3)
/usr/local/angstrom/arm/lib/gcc/arm-angstrom-linux-gnueabi/4.3.3/../../../../arm-angstrom-linux-gnueabi/bin/ld: /tmp/camlstartup71ef32.o: Relocations in generic ELF (EM: 3)
/tmp/camlstartup71ef32.o: could not read symbols: File in wrong format
collect2: ld returned 1 exit status
File "caml_startup", line 1, characters 0-1:
Error: Error during linking
make: *** [zytouch-calibrate] Error 2

我被困在一般ELF的重定位。（EM：3）错误

在Makefile文件看起来是这样的：

The Makefile looks like this:

(...)
OFLAGS = -cc ${CC} -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A
OCAMLOPT = ocamlopt $(OFLAGS)

OCAML_INC =  -I +lablgtk2 -I +cairo -I +extlib -I calibrate
OCAML_LIBS = $(OCAML_INC) extLib.cmxa str.cmxa unix.cmxa lablgtk.cmxa cairo_lablgtk.cmxa cairo.cmxa gtkInit.cmx

(...)    
config.cmx: util.cmx
orientation.cmx: config.cmx
tscalibrate.cmx: version.cmx util.cmx orientation.cmx config.cmx

%.cmx : %.ml
        $(OCAMLOPT) -c $(OCAML_INC) $< -o $@

%.mli : %.ml
        $(OCAMLC) -i $(OCAML_INC) $+

由于的/ usr /本地/埃/ ARM /环境设置叶的/ usr /本地/埃/ ARM /斌我的PATH的第一个元素，我试图取代与ARM版本的一些程序

As /usr/local/angstrom/arm/environment-setup leaves /usr/local/angstrom/arm/bin as the first element of my PATH, I tried to replace some programs with the ARM versions

sudo ln -s /usr/local/angstrom/arm/bin/arm-angstrom-linux-gnueabi-ar /usr/local/angstrom/arm/bin/ar
sudo ln -s /usr/local/angstrom/arm/bin/arm-angstrom-linux-gnueabi-as /usr/local/angstrom/arm/bin/as
sudo ln -s /usr/local/angstrom/arm/bin/arm-angstrom-linux-gnueabi-ld /usr/local/angstrom/arm/bin/ld

但是，更换为之后，这些模块甚至不编译

However, after replacing as, the modules don't even compile

ocamlopt -cc arm-angstrom-linux-gnueabi-gcc -cclib -lcairo -cclib -lextlib -cclib -llablgtk2 -warn-error A -c -I +lablgtk2 -I +cairo -I +extlib -I calibrate calibrate/version.ml -o calibrate/version.cmx
/tmp/camlasm41bb77.s: Assembler messages:
/tmp/camlasm41bb77.s:31: Error: alignment too large: 15 assumed
/tmp/camlasm41bb77.s:35: Error: bad instruction `movl $camlVersion__3,%eax'
/tmp/camlasm41bb77.s:36: Error: bad instruction `movl %eax,camlVersion'
/tmp/camlasm41bb77.s:37: Error: bad instruction `movl $camlVersion__2,%eax'
/tmp/camlasm41bb77.s:38: Error: bad instruction `movl %eax,camlVersion+4'
/tmp/camlasm41bb77.s:39: Error: bad instruction `movl $camlVersion__1,%eax'
/tmp/camlasm41bb77.s:40: Error: bad instruction `movl %eax,camlVersion+8'
/tmp/camlasm41bb77.s:41: Error: bad instruction `movl $1,%eax'
/tmp/camlasm41bb77.s:42: Error: bad instruction `ret'
/tmp/camlasm41bb77.s:43: Error: unrecognized symbol type ""
File "calibrate/version.ml", line 1, characters 0-1:
Error: Assembler error, input left in file /tmp/camlasm41bb77.s
make: *** [calibrate/version.cmx] Error 2

我是pretty相信这一定是一个非常愚蠢的错误，但我无法找到如何做到这一点适当的文档。有谁知道什么可以失败？

I'm pretty sure it must be a very stupid error, but I can't find documentation on how to do this properly. Does anyone know what could be failing?

我试图构建驱动程序的源$ C ​​$ C，可以发现这里 。

The source code of the driver I'm trying to build can be found here.

推荐答案

ocaml的目前不支持交叉编译，并通过-cc选项不会让它神奇交叉编译武装。有一些补丁左右浮动，使得它有可能，但没有官员。我记得使用修补ocamlopt和它简单的程序工作正常。但在这种情况下，你还需要交叉编译所有依赖库，这可以是相当多的一个任务。

ocaml currently doesn't support cross-compilation, and passing -cc option will not make it magically cross-compile to arm. There are some patches floating around that make it possible, but nothing official. I remember using patched ocamlopt and it worked ok for simple programs. But in this case you will also need to cross-compile all dependent libraries and this can be quite a bit of a task.

我觉得你最好的解决方法是：

I think your best solution is to either :

• 在手臂QEMU本身建立（这是很容易的，也有prebuilt debian的图像可用）

建立校准应用程序（字节code是架构之间移植，但需要安装在目标OCaml中的版本相同）的字节code二进制和安装所需的存根库（包含C中的那些code为绑定到手臂上的GTK，开罗等）（内置原生或包）

build a bytecode binary of calibration application (bytecode is portable between architectures but requires the same version of ocaml installed on the target) and install required stub libraries (the ones that contain C code for bindings to gtk,cairo,etc) on arm (built natively or from packages)

这篇关于交叉编译为ARM ocaml的应用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！