build error missing math flag -lm

[bakeromso]

I'm building on Debian 13, and following the instructions from https://pip-assets.raspberrypi.com/categories/610-raspberry-pi-pico/documents/RP-008276-DS-1-getting-started-with-pico.pdf?disposition=inline

$ git clone https://github.com/raspberrypi/openocd.git
$ cd openocd
$ ./bootstrap
$ ./configure --disable-werror
$ make -j4

I think it should recursively clone so it pulls in jimtcl as well. I couldn't get that package using APT and default repos in Debian Trixie anyways.
Building jimtcl goes without any problems, but then I get the following error (due to a missing -lm flag in libtool)

 $/bin/bash ./libtool  --tag=CC   --mode=link gcc -Wall -Wstrict-prototypes -Wformat-security -Wshadow -Wextra -Wno-unused-parameter -Wbad-function-cast -Wcast-align -Wredundant-decls -Wpointer-arith -Wundef -Werror  -g -O2   -o src/openocd src/main.o src/libopenocd.la   -L/usr/local/lib -ljim -lssl -lcrypto -lz
libtool: link: gcc -Wall -Wstrict-prototypes -Wformat-security -Wshadow -Wextra -Wno-unused-parameter -Wbad-function-cast -Wcast-align -Wredundant-decls -Wpointer-arith -Wundef -Werror -g -O2 -o src/openocd src/main.o  src/.libs/libopenocd.a -lm -L/usr/local/lib -ljim -lssl -lcrypto -lz
/usr/bin/ld: /usr/local/lib/libjim.a(jim.o): in function `JimExprOpDoubleUnary':
jim.c:(.text+0x1430f): undefined reference to `sin'
/usr/bin/ld: jim.c:(.text+0x14327): undefined reference to `cos'
/usr/bin/ld: jim.c:(.text+0x1433f): undefined reference to `tan'
/usr/bin/ld: jim.c:(.text+0x14357): undefined reference to `asin'
/usr/bin/ld: jim.c:(.text+0x1436f): undefined reference to `acos'
/usr/bin/ld: jim.c:(.text+0x14387): undefined reference to `atan'
/usr/bin/ld: jim.c:(.text+0x1439f): undefined reference to `sinh'
/usr/bin/ld: jim.c:(.text+0x143b7): undefined reference to `cosh'
/usr/bin/ld: jim.c:(.text+0x143cf): undefined reference to `tanh'
/usr/bin/ld: jim.c:(.text+0x144a7): undefined reference to `exp'
/usr/bin/ld: jim.c:(.text+0x144bf): undefined reference to `log'
/usr/bin/ld: jim.c:(.text+0x144d7): undefined reference to `log10'
/usr/bin/ld: jim.c:(.text+0x144f6): undefined reference to `sqrt'
/usr/bin/ld: /usr/local/lib/libjim.a(jim.o): in function `JimExprOpBin':
jim.c:(.text+0x15109): undefined reference to `pow'
/usr/bin/ld: jim.c:(.text+0x151f5): undefined reference to `atan2'
/usr/bin/ld: jim.c:(.text+0x153ac): undefined reference to `fmod'
/usr/bin/ld: jim.c:(.text+0x153c5): undefined reference to `hypot'
collect2: error: ld returned 1 exit status

Manually adding the -lm flag quick fixes the issue

$/bin/bash ./libtool  --tag=CC   --mode=link gcc -Wall -Wstrict-prototypes -Wformat-security -Wshadow -Wextra -Wno-unused-parameter -Wbad-function-cast -Wcast-align -Wredundant-decls -Wpointer-arith -Wundef -Werror  -g -O2   -o src/openocd src/main.o src/libopenocd.la   -L/usr/local/lib -ljim -lssl -lcrypto -lz -lm

now continuing with make is successful.

I don't have the proposed fix. I think it may all be related to jimctl not being installed on my system. Since it's linked as a submodule in this repo, I think this is something expected, so the Makefile I think should handle this case correctly.

[tom-van]

libjim-dev is available in Debian trixie