Dear c.o.l.embedded I downloaded source of lrzsz and want to cross compile it. How do i make gnu build system understand this? ./configure CROSS_COMPILE=arm-unknown-linux-gnu- doesn't work. Do i need to find a way to handle everything by hand? Source tree doesn't seem complicated.
f there was a CROSS_COMPILE option, it would be preceded with --, for example: --host=HOST cross-compile to build programs to run on HOST [BUILD]
Typically you can use the following environmental variables CC C compiler command CFLAGS C compiler flags LDFLAGS linker flags, e.g. -L if you have libraries in a nonstandard directory LIBS libraries to pass to the linker, e.g. -l CPPFLAGS C/C++/Objective C preprocessor flags, e.g. -I if you have headers in a nonstandard directory CPP C preprocessor CXX C++ compiler command CXXFLAGS C++ compiler flags CXXCPP C++ preprocessor
--host=HOST cross-compile to build programs to run on HOST [BUILD]
$./configure CC=arm-unknown-linux-gnu-gcc configure: warning: CC=arm-unknown-linux-gnu-gcc: invalid host type
$ CROSS_COMPILE=arm-unknown-linux-gnu- $ ./configure --host=i686-linux --target=arm-linux (script runs but make terminates with error)
$ CC=arm-unknown-linux-gnu- $ ./configure
... checking for gcc... (cached) gcc checking whether the C compiler (gcc ) works... yes checking whether the C compiler (gcc ) is a cross-compiler... no ...
So, each of these tries resulted in non working settings. My cross toolchain is installed and in my PATH.
That setting of a variable won't be seen by teh configure script. Either export it as an environmental variable to be exported to spawned processes, or include it in the ./configure line thus:
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