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Diffstat (limited to 'Documentation/kbuild/makefiles.txt')
| -rw-r--r-- | Documentation/kbuild/makefiles.txt | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 71e9feefb63c..750aea9edd35 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -153,8 +153,14 @@ more details, with real examples. configuration. Kbuild compiles all the $(obj-y) files. It then calls - "$(LD) -r" to merge these files into one built-in.o file. - built-in.o is later linked into vmlinux by the parent Makefile. + "$(AR) rcSTP" to merge these files into one built-in.o file. + This is a thin archive without a symbol table, which makes it + unsuitable as a linker input. + + The scripts/link-vmlinux.sh script later makes an aggregate + built-in.o with "${AR} rcsTP", which creates the thin archive + with a symbol table and an index, making it a valid input for + the final vmlinux link passes. The order of files in $(obj-y) is significant. Duplicates in the lists are allowed: the first instance will be linked into |