On 2026-01-17 Andreas Metzler <[email protected]> wrote: [...] > I am too stupid to understand this. config.log says: > configure:22126: checking for gcry_cipher_checktag in -lgcrypt > configure:22155: gcc -o conftest -W -Wall -Wno-unused-parameter > -Wno-unused-function -g -O2 -Werror=implicit-function-declaration > -ffile-prefix-map=/home/ametzler/NDPI/ndpi-4.2=. -fstack-protector-strong > -fstack-clash-protection -Wformat -Werror=format-security > -mbranch-protection=standard -I/usr/include/json-c -Wdate-time > -D_FORTIFY_SOURCE=2 -Wl,-z,relro -Wl,-z,now -mbranch-protection=standard > conftest.c -lgcrypt -ljson-c -ljson-c >&5 > /usr/lib/gcc/aarch64-linux-gnu/15/../../../aarch64-linux-gnu/libgcrypt.so: > warning: GCS is required by -z gcs, but this shared library lacks the > necessary property note. The dynamic loader might not enable GCS or refuse to > load the program unless all the shared library dependencies have the GCS > marking. > configure:22155: $? = 0 > configure: failed program was: > [...] > configure:22167: result: no
> However, taking the snippped "failed program" and running the quoted > "gcc -o conftest -W ..." on it yields the warning but exits > successfully. (exit code 0). A minimal configure.ac ... AC_PREREQ(2.59) AC_INIT([foonly], [2.0], [[email protected]]) AC_PROG_CC AC_CHECK_LIB(gcrypt, gcry_cipher_checktag) AC_CHECK_LIB(gpg-error, gpg_strerror_r) AC_CONFIG_FILES([Makefile]) AC_OUTPUT ... indeed shows checking for gcry_cipher_checktag in -lgcrypt... yes checking for gpg_strerror_r in -lgpg-error... yes with config.log saying configure:3178: checking for gcry_cipher_checktag in -lgcrypt configure:3207: gcc -o conftest -g -O2 -Werror=implicit-function-declaration -ff ile-prefix-map=/home/ametzler/NDPI/blah=. -fstack-protector-strong -fstack-clash -protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate -time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -Wl,-z,now -mbranch-protection=standard c onftest.c -lgcrypt >&5 /usr/lib/gcc/aarch64-linux-gnu/15/../../../aarch64-linux-gnu/libgcrypt.so: warni ng: GCS is required by -z gcs, but this shared library lacks the necessary prope rty note. The dynamic loader might not enable GCS or refuse to load the program unless all the shared library dependencies have the GCS marking. configure:3207: $? = 0 configure:3219: result: yes cu Andreas -- `What a good friend you are to him, Dr. Maturin. His other friends are so grateful to you.' `I sew his ears on from time to time, sure'
