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[OT] lighttpd 1.4.71 cross-build issue. Error: ./conftest: cannot execute binary file: exec format error

Added by bharatb 3 months ago

Hello,
We have working code with lighttpd 1.4.64. However we required to update version to 1.4.71. While updating lighttpd 1.4.71, code building start breaking with following config.log message. I have tried lot to fix/search but not able to do so. For you ready reference I have written message by compiler as below.

configure:6298: checking whether we are cross compiling
configure:6306: gcc -std=gnu11 -o conftest -g -O2 conftest.c >&5
configure:6310: $? = 0
configure:6317: ./conftest
./configure: line 6319: ./conftest: cannot execute binary file: Exec format error
configure:6321: $? = 126
configure:6328: error: in `/home_dir/ltib-mpcxxxxerdb_revx-xxxxxxxx/rpm/BUILD/lighttpd-1.4.71':
configure:6330: error: cannot run C compiled programs.
If you meant to cross compile, use `--build'.
See `config.log' for more details

Can you help me out please.
Note: I have tried with lighttpd 1.4.70 also but same result.


Replies (5)

RE: lighttpd 1.4.71 build issue. Error: ./conftest: cannot execute binary file: exec format error - Added by gstrauss 3 months ago

Latest stable lighttpd release is lighttpd 1.4.73. If you are updating, you should update to lighttpd 1.4.73

git diff lighttpd-1.4.64..lighttpd-1.4.71 configure.ac does not show a lot of changes, nor anything remotely relevant to your error.

./configure: line 6319: ./conftest: cannot execute binary file: Exec format error
Fix your build environment.
If you haven't yet, perform a build in a clean build environment.
If you haven't yet, make sure to run ./autogen.sh for autoreconf -fi

Make sure you've actually configured your cross compilation environment correctly.

Sorry, none of that is a lighttpd build issue. You need to fix your cross compilation environment.

RE: [OT] lighttpd 1.4.71 cross-build issue. Error: ./conftest: cannot execute binary file: exec format error - Added by gstrauss 3 months ago

If you're building an RPM, then see InstallFromSource and look at the Fedora build and .spec file

RE: [OT] lighttpd 1.4.71 cross-build issue. Error: ./conftest: cannot execute binary file: exec format error - Added by bharatb 3 months ago

Hello,
Thank you for sharing information. My build environment is perfectly work with lighttpd 1.4.64 but not with lighttpd 1.4.73 (initially I was using 1.4.71 but now as per your suggestion I am using lighttpd 1.4.73). Do I need to change build environment according to lighttpd 1.4.73? Please can you help me that how I can know that what parameter need to change in build environment?
Meanwhile, I want to share one obervation. I have found difference between lighttpd1.4.64 and lightpd1.4.73 in serial messages during build. lighttpd 1.4.64 compiled with -std=gnu99 while lighttpd 1.4.73 compiled with -std=gnu11. So, should I compile with gnu99? How I can change this setting?

RE: [OT] lighttpd 1.4.71 cross-build issue. Error: ./conftest: cannot execute binary file: exec format error - Added by gstrauss 3 months ago

lighttpd configure.ac stopped specifying --std=gnu99 in lighttpd 1.4.46 back in 2017
https://git.lighttpd.net/lighttpd/lighttpd1.4/commit/6f75cddddaa8848b729569daab4059e180ce0eb1

lighttpd cross-compiles just fine and builds on many different OS and versions.
lighttpd builds using autotools, CMake, SCONS, and meson.

Sorry, this web site is a lighttpd forum, not free support for your company's custom build environment or how to configure your compiler.

RE: [OT] lighttpd 1.4.71 cross-build issue. Error: ./conftest: cannot execute binary file: exec format error - Added by bharatb 3 months ago

Hi Sir,
I checked my cross compilation environment but not able to find any abnormality. I also agreed that this is not lighttpd issue but any how I can not able to resolved issue. My issue is only related to conftest.c compilation as specified in above post. I can resolve issue by disabling conftest from configuration file. I have looked into lighttpd configuration file and tried to understand it. Now, I want to disable conftest option so that this file not compiled and I will not get error message. So, can you please help me that how can I disable conftest feature so that it will not compile. I believe that this will resolve my issue.

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