[cfe-users] C/C++ system include dirs when cross-compiling
Patrick Boettcher via cfe-users
cfe-users at lists.llvm.org
Thu Mar 24 08:22:11 PDT 2016
I'm using clang to cross-compile for a sparc-target.
Except for the compiler I (seem to) rely entirely on gcc-tools (ld,
asm). I doing this by passing the -B
<path-to-gcc-toolchain> - flag to clang.
I'm now facing an issue where I would like to have clang use the
c++-system-includes of my gcc-installation.
When I dump the considered include-dirs with
echo | sparc-elf-gcc -nostdlib -xc++ -E -Wp,-v - -fsyntax-only
I'm getting a list of all the paths I'm looking for. Doing the same
with clang (even with the -B-flag) having the -target-flag set, the
list is empty.
What is the proper way to let clang now where to find the
system-includes in cross-compilation scenarios?
I'm now using a script which generates -isystem-arguments which based
on a list generated with a call as shown above.
Should the list be derived from the -B-argument?
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