Compile error with blis

[RustLyu]

hi.
I use this https://github.com/amd/libflame/blob/master/BUILD.md I compiled the libflame tutorial on Linux, and I also compiled the dependent blis and utilities myself
cmake command: cmake -DENABLE_AMD_AOCC_FLAGS=ON -DENABLE_AOCL_BLAS=ON

error message:

In file included from /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/src/lapack/x86/avx2/fla_lapack_avx2_kernels.h:13,
from /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/src/lapack/x86/avx2/fla_dgeqrf_small_avx2.c:10:
/home/rust/dev/MatX/build/cc-Debug/aocl_root/amd-blis/include/blis.h:25743:21: error: conflicting types for ‘ftnlen’; have ‘bla_integer’ {aka ‘int’}
25743 | typedef bla_integer ftnlen;
| ^~~~~~
compilation terminated due to -Wfatal-errors.
make[2]: *** [src/lapack/x86/avx2/CMakeFiles/FLA_LAPACK_AVX2.dir/build.make:79: src/lapack/x86/avx2/CMakeFiles/FLA_LAPACK_AVX2.dir/fla_dgeqrf_small_avx2.c.o] Error 1
make[2]: *** Waiting for unfinished jobs....
[ 0%] Building C object src/lapack/x86/avx512/CMakeFiles/FLA_LAPACK_AVX512.dir/fla_sgetrf_small_avx512.c.o
In file included from /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/src/lapack/x86/avx2/fla_lapack_avx2_kernels.h:13,
from /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/src/lapack/x86/avx2/fla_dgetrf_small_avx2.c:6:
/home/rust/dev/MatX/build/cc-Debug/aocl_root/amd-blis/include/blis.h:25743:21: error: conflicting types for ‘ftnlen’; have ‘bla_integer’ {aka ‘int’}
25743 | typedef bla_integer ftnlen;
| ^~~~~~
compilation terminated due to -Wfatal-errors.
In file included from /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/src/lapack/x86/avx2/fla_lapack_avx2_kernels.h:13,
from /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/src/lapack/x86/avx512/fla_dgetrf_small_avx512.c:6:
/home/rust/dev/MatX/build/cc-Debug/aocl_root/amd-blis/include/blis.h:25743:21: error: conflicting types for ‘ftnlen’; have ‘bla_integer’ {aka ‘int’}
25743 | typedef bla_integer ftnlen;
| ^~~~~~
compilation terminated due to -Wfatal-errors.
make[2]: *** [src/lapack/x86/avx2/CMakeFiles/FLA_LAPACK_AVX2.dir/build.make:93: src/lapack/x86/avx2/CMakeFiles/FLA_LAPACK_AVX2.dir/fla_dgetrf_small_avx2.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:13483: src/lapack/x86/avx2/CMakeFiles/FLA_LAPACK_AVX2.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
make[2]: *** [src/lapack/x86/avx512/CMakeFiles/FLA_LAPACK_AVX512.dir/build.make:79: src/lapack/x86/avx512/CMakeFiles/FLA_LAPACK_AVX512.dir/fla_dgetrf_small_avx512.c.o] Error 1
make[2]: *** Waiting for unfinished jobs....
[ 0%] Building C object src/lapacke/LAPACKE/CMakeFiles/lapacke_obj.dir/src/lapacke_sbbcsd.c.o
[ 0%] Building C object src/lapacke/LAPACKE/CMakeFiles/lapacke_obj.dir/src/lapacke_sbbcsd_work.c.o
[ 0%] Building C object src/lapacke/LAPACKE/CMakeFiles/lapacke_obj.dir/src/lapacke_sbdsdc.c.o
[ 0%] Building C object src/lapacke/LAPACKE/CMakeFiles/lapacke_obj.dir/src/lapacke_sbdsdc_work.c.o
[ 0%] Building C object src/lapacke/LAPACKE/CMakeFiles/lapacke_obj.dir/src/lapacke_sbdsqr.c.o
[ 0%] Building C object src/lapacke/LAPACKE/CMakeFiles/lapacke_obj.dir/src/lapacke_sbdsqr_work.c.o
[ 0%] Building C object src/lapacke/LAPACKE/CMakeFiles/lapacke_obj.dir/src/lapacke_sbdsvdx.c.o
[ 0%] Building C object src/lapacke/LAPACKE/CMakeFiles/lapacke_obj.dir/src/lapacke_sbdsvdx_work.c.o
In file included from /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/src/lapack/x86/avx2/fla_lapack_avx2_kernels.h:13,
from /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/src/lapack/x86/avx512/fla_sgetrf_small_avx512.c:6:
/home/rust/dev/MatX/build/cc-Debug/aocl_root/amd-blis/include/blis.h:25743:21: error: conflicting types for ‘ftnlen’; have ‘bla_integer’ {aka ‘int’}
25743 | typedef bla_integer ftnlen;
| ^~~~~~
compilation terminated due to -Wfatal-errors.

[RustLyu]

extra msg: compile tool: gcc

[varajago]

Hi RustLyu,

Thank you trying out AOCL.
'ftnlen' is of type defined in both libFLAME and BLIS.
Hence the type mismatch error seen in the log could be due to different integer types selected for these two libs during configure/build time. Specifically, we have to select the LP64 vs ILP64 option to be same across the two libs.
Please check the build options that you have used. If possible, post them here and we will cross check and verify.
Thank you.

[RustLyu]

Thank you varajago!
blis cmake command:
# =========================================================
# BLIS build dirs
# =========================================================

execute_process(
  COMMAND ${CMAKE_COMMAND}
          -S ${blis_SOURCE_DIR}
          -B ${blis_BINARY_DIR}
          -DENABLE_ILP64=ON
          -DBLIS_CONFIG_FAMILY=auto
          -DBLIS_DISABLE_F77_TYPES=ON
          -DBLIS_ENABLE_NOFORTRAN=ON
          -DCMAKE_INSTALL_PREFIX=${AOCL_ROOT}
)

# =========================================================
# build BLIS
# =========================================================

execute_process(
  COMMAND ${CMAKE_COMMAND}
          --build ${blis_BINARY_DIR}
          --parallel
  RESULT_VARIABLE BLIS_BUILD_RESULT
)

libflame cmake command: execute_process(
COMMAND ${CMAKE_COMMAND}
-S ${libflame_SOURCE_DIR}
-B ${libflame_BINARY_DIR}
-DCMAKE_BUILD_TYPE=RELEASE
-DBLIS_CONFIG_FAMILY=auto
-DAOCL_ROOT=${AOCL_ROOT}
-DENABLE_ILP64=ON
-DCMAKE_C_STANDARD_LIBRARIES="-lm"
-DCMAKE_SHARED_LINKER_FLAGS="-lm"
-DBLAS_LIBRARY=${BLAS_LIBRARY}
-DENABLE_AMD_FLAGS=ON
-DENABLE_AMD_AOCC_FLAGS=ON
-DENABLE_AOCL_BLAS=ON
-DCMAKE_INSTALL_PREFIX=${AOCL_ROOT}
)

  # =========================================================
  # build libflame
  # =========================================================

  execute_process(
    COMMAND ${CMAKE_COMMAND}
            --build ${libflame_BINARY_DIR}
            --parallel
    RESULT_VARIABLE libflame_BUILD_RESULT
  )

Thank you!

[varajago]

AOCL BLIS and libFLAME are following two different flags to set the integer bit-width.
For BLIS, the flag to use is BLAS_INT_SIZE and can be used as below for ILP64:
-DBLAS_INT_SIZE=64
Hope this helps.

[RustLyu]

Thank you.
It's getting better and compiling is fine, but it will look for the main function when linking. But library do't need to find main interface.

This is cc command detail message:
[ 34%] Linking C shared library /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/lib/libflame.so
/usr/bin/cmake -E cmake_link_script CMakeFiles/flame.dir/link.txt --verbose=1
/usr/bin/cc -fPIC -mtune=native -O3 -mavx2 -mfma -fstack-protector-strong -fpie -Wformat -Wformat-security -g0 -Wall -Wno-comment -std=c11 -D_GNU_SOURCE -Wno-unused-function -Wno-parentheses -Wfatal-errors -D_FORTIFY_SOURCE=2 -fopenmp -O3 -DNDEBUG -shared "-lm" -pie -Wl,-z,relro -Wl,-z,now -Wl,--dependency-file=CMakeFiles/flame.dir/link.d -Wl,-soname,libflame.so -o /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/lib/libflame.so @CMakeFiles/flame.dir/objects1.rsp @CMakeFiles/flame.dir/objects2.rsp @CMakeFiles/flame.dir/objects3.rsp @CMakeFiles/flame.dir/objects4.rsp @CMakeFiles/flame.dir/objects5.rsp -Wl,-rpath,/home/rust/dev/MatX/build/cc-Debug/aocl_root/lib: /home/rust/dev/MatX/build/cc-Debug/aocl_root/lib/libblis.so /home/rust/dev/MatX/build/cc-Debug/aocl_root/lib/libaoclutils.so /usr/lib/libgomp.so /usr/lib/libpthread.a "-lm"
/usr/bin/ld: /usr/lib/gcc/x86_64-pc-linux-gnu/15.2.1/../../../../lib/Scrt1.o: in function _start': (.text+0x1b): undefined reference to main'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/flame.dir/build.make:86608: /home/rust/dev/MatX/build/cc-Debug/_deps/libflame-src/lib/libflame.so] Error 1
make[2]: Leaving directory '/home/rust/dev/MatX/build/cc-Debug/libflame-build'
make[1]: *** [CMakeFiles/Makefile2:13451: CMakeFiles/flame.dir/all] Error 2
make[1]: Leaving directory '/home/rust/dev/MatX/build/cc-Debug/libflame-build'
make: *** [Makefile:136: all] Error 2

It seems to be due to cmakelist.txt line219:(set(COMPILE_FLAGS "-fstack-protector-strong -fpie -Wformat -Wformat-security") ).

Best regards!

[RustLyu]

  execute_process(
    COMMAND ${CMAKE_COMMAND}
            -S ${libflame_SOURCE_DIR}
            -B ${libflame_BINARY_DIR}
            -DCMAKE_BUILD_TYPE=RELEASE
            -DBLIS_CONFIG_FAMILY=auto
            -DAOCL_ROOT=${AOCL_ROOT}
            -DENABLE_ILP64=ON
            -DCMAKE_C_STANDARD_LIBRARIES="-lm"
            -DCMAKE_SHARED_LINKER_FLAGS="-lm"
            -DBLAS_LIBRARY=${BLAS_LIBRARY}
            -DENABLE_AMD_FLAGS=ON
            -DENABLE_AOCL_BLAS=ON
            -DCMAKE_INSTALL_PREFIX=${AOCL_ROOT}
            -DBUILD_SHARED_LIBS=ON
  )

This is lastest libflame`s cmake command.

[varajago]

Hi @RustLyu, your analysis could be right. The -fpie could be causing it. You can remove it and try.
Are you using GCC 15.2.1 as your log suggests?
We have so far tried with 15.1. We will try to reproduce with 15.2.1 and get back.

[RustLyu]

After blocking lines 225 and 219 of cmakelist.txt, it worked.
This is my gcc version:
gcc (GCC) 15.2.1 20260209
Copyright (C) 2025 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Perhaps the 15.2.1 gcc version check is more strict.
Thank you very much for your help!