Re: [PATCH] tools build: Link crypto lib for libopenssl feature

[Namhyung Kim]

Hi Leo,

On Sat, Mar 07, 2026 at 02:05:53PM +0000, Leo Yan wrote:
> The perf static build reports that the BPF skeleton is disabled due to
> the missing libopenssl feature.
> 
> Linking the crypto library fixes the static build failure.

I'm not sure if it's enough.  My build still doesn't have BPF skeleton
support even with this change.  It seems to want zlib and zstd as well.

Here's my tools/build/feature/test-libopenssl.make.output.

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-dso_dlfcn.o): in function `dlfcn_globallookup':
(.text+0x18): warning: Using 'dlopen' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-bio_addr.o): in function `BIO_lookup_ex':
(.text+0xe77): warning: Using 'getaddrinfo' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-bio_sock.o): in function `BIO_gethostbyname':
(.text+0x85): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `zlib_stateful_expand_block':
(.text+0x83): undefined reference to `inflate'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `zlib_stateful_compress_block':
(.text+0x157): undefined reference to `deflate'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `zlib_stateful_finish':
(.text+0x1bd): undefined reference to `inflateEnd'
/usr/bin/ld: (.text+0x1c6): undefined reference to `deflateEnd'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `zlib_stateful_init':
(.text+0x293): undefined reference to `inflateInit_'
/usr/bin/ld: (.text+0x308): undefined reference to `deflateInit_'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `bio_zlib_ctrl':
(.text+0x506): undefined reference to `zError'
/usr/bin/ld: (.text+0x5f8): undefined reference to `deflate'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `bio_zlib_write':
(.text+0x8c9): undefined reference to `deflate'
/usr/bin/ld: (.text+0x946): undefined reference to `zError'
/usr/bin/ld: (.text+0x9e7): undefined reference to `deflateInit_'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `bio_zlib_read':
(.text+0xad9): undefined reference to `inflate'
/usr/bin/ld: (.text+0xb56): undefined reference to `zError'
/usr/bin/ld: (.text+0xbcb): undefined reference to `inflateInit_'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `zlib_oneshot_expand_block':
(.text+0xc64): undefined reference to `uncompress'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `zlib_oneshot_compress_block':
(.text+0xce4): undefined reference to `compress'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zlib.o): in function `bio_zlib_free':
(.text+0xd39): undefined reference to `inflateEnd'
/usr/bin/ld: (.text+0xd64): undefined reference to `deflateEnd'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `zstd_stateful_expand_block':
(.text+0x9e): undefined reference to `ZSTD_decompressStream'
/usr/bin/ld: (.text+0xa9): undefined reference to `ZSTD_isError'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `zstd_stateful_compress_block':
(.text+0x178): undefined reference to `ZSTD_compressStream2'
/usr/bin/ld: (.text+0x180): undefined reference to `ZSTD_isError'
/usr/bin/ld: (.text+0x1bf): undefined reference to `ZSTD_endStream'
/usr/bin/ld: (.text+0x1c7): undefined reference to `ZSTD_isError'
/usr/bin/ld: (.text+0x1ef): undefined reference to `ZSTD_flushStream'
/usr/bin/ld: (.text+0x1f7): undefined reference to `ZSTD_isError'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `zstd_stateful_finish':
(.text+0x22b): undefined reference to `ZSTD_freeCStream'
/usr/bin/ld: (.text+0x234): undefined reference to `ZSTD_freeDStream'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `zstd_stateful_init':
(.text+0x2fd): undefined reference to `ZSTD_createCStream_advanced'
/usr/bin/ld: (.text+0x316): undefined reference to `ZSTD_initCStream'
/usr/bin/ld: (.text+0x337): undefined reference to `ZSTD_createDStream_advanced'
/usr/bin/ld: (.text+0x34c): undefined reference to `ZSTD_initDStream'
/usr/bin/ld: (.text+0x374): undefined reference to `ZSTD_freeCStream'
/usr/bin/ld: (.text+0x37d): undefined reference to `ZSTD_freeDStream'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `bio_zstd_new':
(.text+0x42c): undefined reference to `ZSTD_createDStream_advanced'
/usr/bin/ld: (.text+0x444): undefined reference to `ZSTD_initDStream'
/usr/bin/ld: (.text+0x449): undefined reference to `ZSTD_DStreamInSize'
/usr/bin/ld: (.text+0x46e): undefined reference to `ZSTD_createCStream_advanced'
/usr/bin/ld: (.text+0x488): undefined reference to `ZSTD_initCStream'
/usr/bin/ld: (.text+0x48d): undefined reference to `ZSTD_CStreamInSize'
/usr/bin/ld: (.text+0x4f4): undefined reference to `ZSTD_freeDStream'
/usr/bin/ld: (.text+0x4fd): undefined reference to `ZSTD_freeCStream'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `bio_zstd_ctrl':
(.text+0x6dc): undefined reference to `ZSTD_getErrorName'
/usr/bin/ld: (.text+0x78d): undefined reference to `ZSTD_flushStream'
/usr/bin/ld: (.text+0x798): undefined reference to `ZSTD_isError'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `bio_zstd_write':
(.text+0x9a2): undefined reference to `ZSTD_compressStream2'
/usr/bin/ld: (.text+0x9ad): undefined reference to `ZSTD_isError'
/usr/bin/ld: (.text+0xa24): undefined reference to `ZSTD_getErrorName'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `bio_zstd_read':
(.text+0xbcd): undefined reference to `ZSTD_decompressStream'
/usr/bin/ld: (.text+0xbd8): undefined reference to `ZSTD_isError'
/usr/bin/ld: (.text+0xc14): undefined reference to `ZSTD_getErrorName'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `zstd_oneshot_expand_block':
(.text+0xd87): undefined reference to `ZSTD_decompress'
/usr/bin/ld: (.text+0xd94): undefined reference to `ZSTD_isError'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `zstd_oneshot_compress_block':
(.text+0xe0a): undefined reference to `ZSTD_compress'
/usr/bin/ld: (.text+0xe17): undefined reference to `ZSTD_isError'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/libcrypto.a(libcrypto-lib-c_zstd.o): in function `bio_zstd_free':
(.text+0xe77): undefined reference to `ZSTD_freeDStream'
/usr/bin/ld: (.text+0xe95): undefined reference to `ZSTD_freeCStream'
collect2: error: ld returned 1 exit status

Thanks,
Namhyung