http://llvm.org/bugs/show_bug.cgi?id=22490
Bug ID: 22490
Summary: clang 3.6: inconsistent claiming of options -nostdlib
vs. -nostartfiles
Product: clang
Version: 3.6
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Driver
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
When compiling, -nostdlib seems to get claimed while -nostartfiles and
-nodefaultlibs are not.
When linking, -isystem seems to get claimed while -nostdinc and -nostdinc++ are
not.
I think it would be nice to claim all these options as it makes it easier to
write clang-XXX wrapper scripts.
$ echo 'int x = 1;' > test.c
#
# compiling
#
$ clang-3.6.0rc2 -target i386-linux -c test.c
$ clang-3.6.0rc2 -target i386-linux -nostdlib -c test.c
$ clang-3.6.0rc2 -target i386-linux -nostartfiles -c test.c
clang: warning: argument unused during compilation: '-nostartfiles'
$ clang-3.6.0rc2 -target i386-linux -nodefaultlibs -c test.c
clang: warning: argument unused during compilation: '-nodefaultlibs'
#
# linking
#
$ clang-3.6.0rc2 -target i386-linux -shared -o test.so test.o
$ clang-3.6.0rc2 -target i386-linux -isystem /usr/include -shared -o test.so
test.o
$ clang-3.6.0rc2 -target i386-linux -nostdinc -shared -o test.so test.o
clang: warning: argument unused during compilation: '-nostdinc'
$ clang-3.6.0rc2 -target i386-linux -nostdinc++ -shared -o test.so test.o
clang: warning: argument unused during compilation: '-nostdinc++'
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