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Issues of the latest trunk with LTO merges
- From: "Bingfeng Mei" <bmei at broadcom dot com>
- To: "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
- Date: Mon, 12 Oct 2009 07:31:21 -0700
- Subject: Issues of the latest trunk with LTO merges
Hello,
I ran into an issue with the LTO merges when updating to current trunk.
The problem is that my target calls a few functions/uses some data structures
in the gcc directory: c_language, paragma_lex, c_register_pragma, etc.
gcc -m32 -g -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wc++-compat -fno-common -DHAVE_CONFIG_H -o lto1 \
lto/lto-lang.o lto/lto.o lto/lto-elf.o attribs.o main.o tree-browser.o libbackend.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a -L/projects/firepath/tools/work/bmei/packages/gmp/4.3.0/lib -L/projects/firepath/tools/work/bmei/packages/mpfr/2.4.1/lib -lmpfr -lgmp -rdynamic -ldl -L../zlib -lz -L/projects/firepath/tools/work/bmei/packages/libelf/lib -lelf ../libcpp/libcpp.a ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a -lelf
When compiling for lto1 in above step, I have many linking errors consequently.
I tried to add some extra object files like c-common.o, c-pragma.o, etc into
lto/Make-lang.in. More linking errors are produced. One problem is that lto
code redefines some data exist in the main code: flag_no_builtin, flag_isoc99
lang_hooks, etc, which prevent it from linking with object files in main directory.
What is the clean solution for this? Thanks in advance.
Cheers,
Bingfeng Mei