[Bug modula2/108480] New: gm2 fails to find SYSTEM module after relocation

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108480

            Bug ID: 108480
           Summary: gm2 fails to find SYSTEM module after relocation
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: modula2
          Assignee: gaius at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
  Target Milestone: ---

When you relocate the installed GCC tree (or install with DESTDIR=/some/path)
then gm2 will not find the SYSTEM module since all -I and -L arguments are
not relative to the install location:

> /space/rguenther/install/trunk-r13-5267/usr/local/bin/gm2 -o a.out -fiso coroutine.mod -v
Driving: /space/rguenther/install/trunk-r13-5267/usr/local/bin/gm2 -o a.out
-fiso coroutine.mod -v -fgen-module-list=- -I
/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2iso -I
/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2pim -fplugin=m2rte -L
/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2iso -l m2iso -L
/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2pim -l m2pim -l stdc++ -l
m -l pthread -shared-libgcc
new argc = 17, added_libraries = 3
Using built-in specs.
COLLECT_GCC=/space/rguenther/install/trunk-r13-5267/usr/local/bin/gm2
COLLECT_LTO_WRAPPER=/home/space/rguenther/install/trunk-r13-5267/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /space/rguenther/src/gcc/configure
--enable-languages=c,c++,fortran,m2 --disable-libstdcxx-pch --disable-bootstrap
--enable-checking=release
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.1 20230120 (experimental) (GCC) 
COLLECT_GCC_OPTIONS='-o' 'a.out' '-fiso' '-v' '-fgen-module-list=-' '-I'
'/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2iso' '-I'
'/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2pim' '-fplugin=m2rte'
'-L/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2iso'
'-L/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2pim' '-shared-libgcc'
'-mtune=generic' '-march=x86-64' '-dumpdir' 'a-'

/home/space/rguenther/install/trunk-r13-5267/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/cc1gm2
-iplugindir=/home/space/rguenther/install/trunk-r13-5267/usr/local/bin/../lib64/gcc/x86_64-pc-linux-gnu/13.0.1/plugin
-quiet -dumpdir a- -dumpbase coroutine.mod -dumpbase-ext .mod -mtune=generic
-march=x86-64 -version -fiso -fgen-module-list=- -fplugin=m2rte -fiso
-fgen-module-list=- -fplugin=m2rte -I
/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2iso -I
/usr/local/lib64/gcc/x86_64-pc-linux-gnu/13.0.1/m2/m2pim -v coroutine.mod -o
/tmp/ccR3avKM.s
GNU Modula-2 (GCC) version 13.0.1 20230120 (experimental) (x86_64-pc-linux-gnu)
        compiled by GNU C version 7.5.0, GMP version 6.1.2, MPFR version
4.0.2-p6, MPC version 1.1.0, isl version isl-0.22.1-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Versions of loaded plugins:
 m2rte: Unknown version.
GNU Modula-2 (GCC) version 13.0.1 20230120 (experimental) (x86_64-pc-linux-gnu)
        compiled by GNU C version 7.5.0, GMP version 6.1.2, MPFR version
4.0.2-p6, MPC version 1.1.0, isl version isl-0.22.1-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Versions of loaded plugins:
 m2rte: Unknown version.
<built-in>: error: the file containing the definition module ‘SYSTEM’ cannot be
found

that's different from GCC:

> /space/rguenther/install/trunk-r13-5267/usr/local/bin/gcc t.c -v
Using built-in specs.
COLLECT_GCC=/space/rguenther/install/trunk-r13-5267/usr/local/bin/gcc
COLLECT_LTO_WRAPPER=/home/space/rguenther/install/trunk-r13-5267/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /space/rguenther/src/gcc/configure
--enable-languages=c,c++,fortran,m2 --disable-libstdcxx-pch --disable-bootstrap
--enable-checking=release
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.1 20230120 (experimental) (GCC) 
COLLECT_GCC_OPTIONS='-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'a-'

/home/space/rguenther/install/trunk-r13-5267/usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/cc1
-quiet -v -iprefix
/home/space/rguenther/install/trunk-r13-5267/usr/local/bin/../lib64/gcc/x86_64-pc-linux-gnu/13.0.1/
t.c -quiet -dumpdir a- -dumpbase t.c -dumpbase-ext .c -mtune=generic
-march=x86-64 -version -o /tmp/ccRkTB0l.s
...