icx -shared option adding unncessary libraries

[ye-luo]

Point of Contact

Ye Luo

Contact Details

No response

Vendor/ALCF/other tickets/IDs

CMPLRLLVM-76266

Reproducer Path

N/A

Status

Open

Details

Using an empty main function

int main() {}

See ldd output

yeluo@sunspot-uan-0001:~> icx -v
Intel(R) oneAPI DPC++/C++ Compiler 2025.3.2 (2025.3.2.20260112)
yeluo@sunspot-uan-0001:~> icx main.c && ldd ./a.out
	linux-vdso.so.1 (0x00007ffc6351e000)
	libm.so.6 => /lib64/libm.so.6 (0x00007fe1dbb62000)
	libc.so.6 => /lib64/libc.so.6 (0x00007fe1db94d000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fe1dbc5d000)
yeluo@sunspot-uan-0001:~> icx -shared main.c && ldd ./a.out
	linux-vdso.so.1 (0x00007ffe40bfb000)
	libsvml.so => /opt/aurora/26.26.0/oneapi/compiler/latest/lib/libsvml.so (0x00007f41b5ddc000)
	libirng.so => /opt/aurora/26.26.0/oneapi/compiler/latest/lib/libirng.so (0x00007f41b5ce3000)
	libimf.so => /opt/aurora/26.26.0/oneapi/compiler/latest/lib/libimf.so (0x00007f41b58be000)
	libm.so.6 => /lib64/libm.so.6 (0x00007f41b57c7000)
	libintlc.so.5 => /opt/aurora/26.26.0/oneapi/compiler/latest/lib/libintlc.so.5 (0x00007f41b5764000)
	libc.so.6 => /lib64/libc.so.6 (0x00007f41b554f000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f41b7303000)

Unnecessary libsvml, libirng, imf, libintlc all got pull in bloating the dependency when adding -shared option.

Is this a priority/blocking bug?

• Priority

ETA

No response

[brianwhitney59]

Compiling with the -#x option, you can see those libraries are being statically linked

     -Bstatic \
     -lsvml \
     -Bdynamic \
     -Bstatic \
     -lirng \
     -Bdynamic \
     -Bstatic \
     -limf \
     -Bdynamic \
     -lm \
     -lgcc \
     --as-needed \
     -lgcc_s \
     --no-as-needed \
     -Bstatic \
     -lirc \

Adding the -shared flag changes to use the dynamic version.

     -lsvml \
     -lirng \
     -limf \
     -lm \
     -lgcc \
     --as-needed \
     -lgcc_s \
     --no-as-needed \
     -lintlc \

Furthermore, if you know that the libraries are not required, or there is no desire to take advantage of what these libraries provide, the -no-intel-lib option can be used to prevent these libraries from being pulled in. Also, using this option disables any code that would need to pull in these libraries.

     -lm \ 
     -lgcc \
     --as-needed \
     -lgcc_s \
     --no-as-needed \
     -ldl \
     -lgcc \
     --as-needed \
     -lgcc_s \
     --no-as-needed \
     -lc \
     -lgcc \
     --as-needed \
     -lgcc_s \
     --no-as-needed \

[ye-luo]

It seems that icpx is missing all the "--as-needed"