[Bug 277229] lang/gnu-cobol: ld: error: undefined reference due to --no-allow-shlib-undefined: __isfinite with clang-17

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277229

            Bug ID: 277229
           Summary: lang/gnu-cobol: ld: error: undefined reference due to
                    --no-allow-shlib-undefined: __isfinite with clang-17
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: wen@FreeBSD.org
          Reporter: saper@saper.info
             Flags: maintainer-feedback?(wen@FreeBSD.org)
          Assignee: wen@FreeBSD.org

This is FreeBSD 15.0-CURRENT #10 main-n267042-488e8a7faca5: Sun Dec 24 04:00:42
CET 2023 on amd64 with

# clang --version
FreeBSD clang version 17.0.6 (https://github.com/llvm/llvm-project.git
llvmorg-17.0.6-0-g6009708b4367)
Target: x86_64-unknown-freebsd15.0
Thread model: posix
InstalledDir: /usr/bin

Linking of the cobcrun executable fails with:

/bin/sh ../libtool  --tag=CC   --mode=link cc  -O2 -pipe  -fstack-protector
-fno-strict-aliasing  -pipe -finline-functions -fsigned-char -Wall
-Wwrite-strings -Wmissing-prototypes -Wno-format-y2k  -L/usr/local/lib
-fstack-protector  -Wl,-z,relro,-z,now,-O1 -o cobcrun cobcrun.o
../libcob/libcob.la ../lib/libsupport.la -L/usr/local/lib -lintl
-Wl,-rpath,/usr/local/lib  
libtool: link: cc -O2 -pipe -fstack-protector -fno-strict-aliasing -pipe
-finline-functions -fsigned-char -Wall -Wwrite-strings -Wmissing-prototypes
-Wno-format-y2k -fstack-protector -Wl,-z -Wl,relro -Wl,-z -Wl,now -Wl,-O1 -o
.libs/cobcrun cobcrun.o -Wl,-rpath -Wl,/usr/local/lib  -L/usr/local/lib
../libcob/.libs/libcob.so ../lib/.libs/libsupport.a -lgmp -lxml2 -lcjson
-lncursesw -ldb-5.3 -lintl -Wl,-rpath -Wl,/usr/local/lib
ld: error: undefined reference due to --no-allow-shlib-undefined: __isfinite
>>> referenced by ../libcob/.libs/libcob.so
cc: error: linker command failed with exit code 1 (use -v to see invocation)

(Please note, that autoconf code to detect if -lm should be linked in is
commented out
 in
https://sourceforge.net/p/gnucobol/code/HEAD/tree/tags/gnucobol-3.2/configure.ac)

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