gdb/head build, --with-python=<path to working python> FAILs @ "no usable python found " ?

PGNet Dev pgnet.dev@gmail.com
Wed Mar 25 22:51:06 GMT 2020


On 3/25/20 3:24 PM, Christian Biesinger wrote:
> GDB uses basically this commandline to find the linker flags:
> python3.8 ./gdb/python-config.py --ldflags

just checking, that's just a typo right? not expected in config/source at that path?

this

	./gdb/python-config.py

does not exist.

rather

	find . | Grep python-config
		./gdb/python/python-config.py

that, from shell in the env that the build occurs,

	cd src/binutils-gdb
	python3.8 ./gdb/python/python-config.py --ldflags

correctly returns

	-lpython3.8 -lcrypt -lpthread -ldl -lutil -lm -lm -Xlinker -export-dynamic

which should be fine for LDFLAGS

> or pass LDFLAGS=/usr/local/pyenv/versions/3.8-dev/lib/ to configure.

using usual '-L/path' var

	export LDFLAGS="-L/usr/local/pyenv/versions/3.8-dev/lib"
(does this^ need to be rpath'd?  need to poke around in here ...)

	./configure \
	 --prefix=/usr/local/gdb-test \
	 --with-python=/usr/local/pyenv/versions/3.8-dev
	make V=1

_does_ seem to get past the 'python unfound' problem, dropping me into the next issue ... which seems unrelated

	...
	/usr/bin/g++-10  -O3 -Wall -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fmessage-length=0 -grecord-gcc-switches -march=native -mtune=native -std=c++17    -I. -I. -I./../gdb/regformats -I./.. -I./../include -I./../gdb -I./../gnulib/import -I../gnulib/import -I./.. -I..  -O3 -Wall -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fmessage-length=0 -grecord-gcc-switches -march=native -mtune=native -D_FORTIFY_SOURCE=2 -pthread -Wall -Wpointer-arith -Wno-unused -Wunused-value -Wunused-variable -Wunused-function -Wno-switch -Wno-char-subscripts -Wempty-body -Wunused-but-set-parameter -Wunused-but-set-variable -Wno-sign-compare -Wno-error=maybe-uninitialized -Wno-mismatched-tags -Wsuggest-override -Wimplicit-fallthrough=3 -Wduplicated-cond -Wshadow=local -Wdeprecated-copy -Wdeprecated-copy-dtor -Wredundant-move -Wmissing-declarations -Wstrict-null-sentinel -Wformat -Wformat-nonliteral -Werror -DGDBSERVER -c -o linux-low.o -MT linux-low.o -MMD -MP -MF ./.deps/linux-low.Tpo linux-low.cc
	In file included from gdb_proc_service.h:22,
	                 from linux-low.h:27,
	                 from linux-low.cc:20:
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:179:1: note: in expansion of macro ‘PS_EXPORT’
	  179 | PS_EXPORT (ps_get_thread_area);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:180:1: note: in expansion of macro ‘PS_EXPORT’
	  180 | PS_EXPORT (ps_getpid);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:181:1: note: in expansion of macro ‘PS_EXPORT’
	  181 | PS_EXPORT (ps_lcontinue);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:182:1: note: in expansion of macro ‘PS_EXPORT’
	  182 | PS_EXPORT (ps_lgetfpregs);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:183:1: note: in expansion of macro ‘PS_EXPORT’
	  183 | PS_EXPORT (ps_lgetregs);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:184:1: note: in expansion of macro ‘PS_EXPORT’
	  184 | PS_EXPORT (ps_lsetfpregs);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:185:1: note: in expansion of macro ‘PS_EXPORT’
	  185 | PS_EXPORT (ps_lsetregs);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:186:1: note: in expansion of macro ‘PS_EXPORT’
	  186 | PS_EXPORT (ps_lstop);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:187:1: note: in expansion of macro ‘PS_EXPORT’
	  187 | PS_EXPORT (ps_pcontinue);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:188:1: note: in expansion of macro ‘PS_EXPORT’
	  188 | PS_EXPORT (ps_pdread);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:189:1: note: in expansion of macro ‘PS_EXPORT’
	  189 | PS_EXPORT (ps_pdwrite);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:190:1: note: in expansion of macro ‘PS_EXPORT’
	  190 | PS_EXPORT (ps_pglobal_lookup);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:191:1: note: in expansion of macro ‘PS_EXPORT’
	  191 | PS_EXPORT (ps_pstop);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:192:1: note: in expansion of macro ‘PS_EXPORT’
	  192 | PS_EXPORT (ps_ptread);
	      | ^~~~~~~~~
	./../gdbsupport/gdb_proc_service.h:177:50: error: expected constructor, destructor, or type conversion before ‘(’ token
	  177 |   __attribute__((visibility ("default"))) typeof (SYM) SYM
	      |                                                  ^
	./../gdbsupport/gdb_proc_service.h:193:1: note: in expansion of macro ‘PS_EXPORT’
	  193 | PS_EXPORT (ps_ptwrite);
	      | ^~~~~~~~~
	make[2]: *** [Makefile:545: linux-low.o] Error 1
	make[2]: Leaving directory '/usr/local/src/binutils-gdb/gdbserver'
	make[1]: *** [Makefile:11295: all-gdbserver] Error 2
	make[1]: Leaving directory '/usr/local/src/binutils-gdb'
	make: *** [Makefile:854: all] Error 2


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