Re: gdb/head build, --with-python= FAILs @ "no usable python found " ?

PGNet Dev
2020-03-25T22:51:09Z

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