Bug#1100111: suitesparse-graphblas: Please add extra cflags for loong64

[zhangdandan]

Source: suitesparse-graphblas
Version: 7.4.0+dfsg-1
Severity: normal
Tags: patch
User: debian-loongarch at lists.debian.org
Usertags: loong64

Dear maintainers,

Compiling the suitesparse-graphblas failed for loong64 in the Debian 
Package Auto-Building environment.
The error log is as follows,
```
......
[100%] Linking C shared library libgraphblas.so
/usr/bin/ld: 
CMakeFiles/graphblas.dir/Source/Generated2/GB_binop__div_fc32.c.o: 
relocation R_LARCH_B26 overflow 0xfffffffff7ffe73c
Dump relocate record:
stack top        relocation name        symbol
at 
CMakeFiles/graphblas.dir/Source/Generated2/GB_binop__div_fc32.c.o(.text+0xb80):
...
0x0000000000000000 R_LARCH_B26    `.L115'
......
```
The full build log can be found at 
https://buildd.debian.org/status/logs.php?pkg=suitesparse-graphblas&ver=7.4.0%2Bdfsg-1%2Bb1&arch=loong64.

Please consider the patch I attached (Add extra build cflags to fix 
relocation R_LARCH_B26 overflow).
Based on attached patch, I have built suitesparse-graphblas_7.4.0+dfsg-1 
successfully on locally.
```
......
     dh_builddeb
dpkg-deb: building package 'libgraphblas7-dbgsym' in 
'../libgraphblas7-dbgsym_7.4.0+dfsg-1_loong64.deb'.
dpkg-deb: building package 'libgraphblas-doc' in 
'../libgraphblas-doc_7.4.0+dfsg-1_all.deb'.
dpkg-deb: building package 'libgraphblas-dev' in 
'../libgraphblas-dev_7.4.0+dfsg-1_loong64.deb'.
dpkg-deb: building package 'libgraphblas7' in 
'../libgraphblas7_7.4.0+dfsg-1_loong64.deb'.
  dpkg-genbuildinfo --build=binary 
-O../suitesparse-graphblas_7.4.0+dfsg-1_loong64.buildinfo
  dpkg-genchanges --build=binary 
-O../suitesparse-graphblas_7.4.0+dfsg-1_loong64.changes
```

Your opinions are welcome.

Best regards,
Dandan Zhang

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