Error = hcxpcapngtool.c:27:10: fatal error: openssl/core.h: No such file or directory due to missing dependency (openssl >= 3.0) about hcxtools

[ZerBea]

You need Openssl >= 3.0
https://www.openssl.org/docs/manmaster/man7/openssl-core.h.html

From README.md sections Requirements:
* libopenssl (>= 3.0) and openssl-dev installed

Looks like an old version is installed or your installation is broken.

If the requirements are satisfied (e.g. openssl 3.1.1),

$ pacman -Q | grep openssl
openssl 3.1.1-1

$ locate openssl/core.h
/usr/include/openssl/core.h

everything compiles fine:

$ make
mkdir -p .deps
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99    -MMD -MF .deps/hcxpcapngtool.d -o hcxpcapngtool hcxpcapngtool.c -lssl -lcrypto  -lz   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99    -MMD -MF .deps/hcxhashtool.d -o hcxhashtool hcxhashtool.c -lssl -lcrypto  -lcurl   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99   -MMD -MF .deps/hcxpsktool.d -o hcxpsktool hcxpsktool.c -lssl -lcrypto   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99   -MMD -MF .deps/hcxpmktool.d -o hcxpmktool hcxpmktool.c -lssl -lcrypto   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99   -MMD -MF .deps/hcxeiutool.d -o hcxeiutool hcxeiutool.c   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99   -MMD -MF .deps/hcxwltool.d -o hcxwltool hcxwltool.c   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99   -MMD -MF .deps/hcxhash2cap.d -o hcxhash2cap hcxhash2cap.c   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99    -MMD -MF .deps/wlancap2wpasec.d -o wlancap2wpasec wlancap2wpasec.c -lssl -lcrypto  -lcurl   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB
cc -O3 -Wall -Wextra -Wpedantic -std=gnu99    -MMD -MF .deps/whoismac.d -o whoismac whoismac.c -lssl -lcrypto  -lcurl   -DVERSION_TAG=\"6.3.1-45-gd763d1f\" -DVERSION_YEAR=\"2023\" -DWANTZLIB

installs fine:

$ sudo make install
install -D -m 0755 hcxpcapngtool /usr/bin/hcxpcapngtool
install -D -m 0755 hcxhashtool /usr/bin/hcxhashtool
install -D -m 0755 hcxpsktool /usr/bin/hcxpsktool
install -D -m 0755 hcxpmktool /usr/bin/hcxpmktool
install -D -m 0755 hcxeiutool /usr/bin/hcxeiutool
install -D -m 0755 hcxwltool /usr/bin/hcxwltool
install -D -m 0755 hcxhash2cap /usr/bin/hcxhash2cap
install -D -m 0755 wlancap2wpasec /usr/bin/wlancap2wpasec
install -D -m 0755 whoismac /usr/bin/whoismac

and works fine:

$ hcxpcapngtool -v
hcxpcapngtool 6.3.1-45-gd763d1f (C) 2023 ZeroBeat

Openssl v3.0 is available since Ubuntu Jammy. If you are still on Ubuntu Focal (Openssl 1.1), hcxtools v6.2.9 is the last working version.
An overview is here:
https://packages.ubuntu.com/search?suite=all&arch=any&searchon=names&keywords=openssl

[ZerBea]

Solution:

1. use hcxtools v 6.2.9 on Ubuntu <= Focal
2. install openssl >= 3.0 and openssl-dev >= 3.0
3. update to Ubuntu >= Jammy

Closed, because missing dependencies are not an issue, but you can still ask your questions here.