Unable to enable muc_size prosody plugin - configuration

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Getting similar error mentioned in the post.
Error while installing luajwtjitsi
I have enabled the muc_size plugin. Then I restarted the prosody and jicofo server.
systemctl restart prosody && systemctl restart jicofo
I got error module not found . So I did this.
apt install luarocks
luarocks install net-url
I reload the prosody and jicofo again
Then I got basexx not found.
luarocks install basexx
Now , again I got the error ( luajwtjitsi module not found). So I tried to install this with luarocks
luarocks install luajwtjitsi
I got the error saying:
Installing https://luarocks.org/luajwtjitsi-1.3-7.rockspec
Missing dependencies for luajwtjitsi 1.3-7:
luacrypto >= 0.3.2-1 (not installed)
lua-cjson >= 2.1.0 (not installed)
lbase64 >= 20120807-3 (not installed)
luajwtjitsi 1.3-7 depends on luacrypto >= 0.3.2-1 (not installed)
Installing https://luarocks.org/luacrypto-0.3.2-2.src.rock
Error: Failed installing dependency: https://luarocks.org/luacrypto-0.3.2-2.src.rock - Could not find header file for OPENSSL
No file openssl/evp.h in /usr/local/include
No file openssl/evp.h in /usr/include
You may have to install OPENSSL in your system and/or pass OPENSSL_DIR or OPENSSL_INCDIR to the luarocks command.
Example: luarocks install luacrypto OPENSSL_DIR=/usr/local
So I did this:
apt install libssl-dev
So , I got the error saying "lua.h" not found, but lua5.2 was already installed. After following answer on te forum.
apt install liblua5.2-dev
It installs both liblua5.2-dev and liblua5.2-0
Now I am facing below error on install luajwtjitsi.
Installing https://luarocks.org/luajwtjitsi-1.3-7.rockspec
Missing dependencies for luajwtjitsi 1.3-7:
luacrypto >= 0.3.2-1 (not installed)
lua-cjson >= 2.1.0 (not installed)
lbase64 >= 20120807-3 (not installed)
luajwtjitsi 1.3-7 depends on luacrypto >= 0.3.2-1 (not installed)
Installing https://luarocks.org/luacrypto-0.3.2-2.src.rock
gcc -O2 -fPIC -I/usr/include/lua5.2 -c src/lcrypto.c -o src/lcrypto.o -I/usr/include
src/lcrypto.c: In function ‘digest_pnew’:
src/lcrypto.c:81:61: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_MD_CTX’ {aka ‘struct evp_md_ctx_st’}
81 | EVP_MD_CTX *c = (EVP_MD_CTX *)lua_newuserdata(L, sizeof(EVP_MD_CTX));
| ^~~~~~~~~~
src/lcrypto.c: In function ‘digest_reset’:
src/lcrypto.c:120:10: warning: implicit declaration of function ‘EVP_MD_CTX_cleanup’; did you mean ‘EVP_MD_CTX_create’? [-Wimplicit-function-declaration]
120 | if (!EVP_MD_CTX_cleanup(c))
| ^~~~~~~~~~~~~~~~~~
| EVP_MD_CTX_create
src/lcrypto.c: In function ‘encrypt_pnew’:
src/lcrypto.c:331:69: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘struct evp_cipher_ctx_st’}
331 | EVP_CIPHER_CTX *c = (EVP_CIPHER_CTX *)lua_newuserdata(L, sizeof(EVP_CIPHER_CTX));
| ^~~~~~~~~~~~~~
src/lcrypto.c: In function ‘encrypt_fencrypt’:
src/lcrypto.c:425:20: error: storage size of ‘c’ isn’t known
425 | EVP_CIPHER_CTX c;
| ^
src/lcrypto.c: In function ‘decrypt_pnew’:
src/lcrypto.c:470:69: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘struct evp_cipher_ctx_st’}
470 | EVP_CIPHER_CTX *c = (EVP_CIPHER_CTX *)lua_newuserdata(L, sizeof(EVP_CIPHER_CTX));
| ^~~~~~~~~~~~~~
src/lcrypto.c: In function ‘decrypt_fdecrypt’:
src/lcrypto.c:561:20: error: storage size of ‘c’ isn’t known
561 | EVP_CIPHER_CTX c;
| ^
src/lcrypto.c: In function ‘hmac_pnew’:
src/lcrypto.c:604:57: error: invalid application of ‘sizeof’ to incomplete type ‘HMAC_CTX’ {aka ‘struct hmac_ctx_st’}
604 | HMAC_CTX *c = (HMAC_CTX *)lua_newuserdata(L, sizeof(HMAC_CTX));
| ^~~~~~~~
src/lcrypto.c: In function ‘hmac_fnew’:
src/lcrypto.c:621:5: warning: implicit declaration of function ‘HMAC_CTX_init’; did you mean ‘HMAC_CTX_new’? [-Wimplicit-function-declaration]
621 | HMAC_CTX_init(c);
| ^~~~~~~~~~~~~
| HMAC_CTX_new
src/lcrypto.c: In function ‘hmac_clone’:
src/lcrypto.c:631:5: error: dereferencing pointer to incomplete type ‘HMAC_CTX’ {aka ‘struct hmac_ctx_st’}
631 | *d = *c;
| ^~
src/lcrypto.c: In function ‘hmac_gc’:
src/lcrypto.c:697:5: warning: implicit declaration of function ‘HMAC_CTX_cleanup’ [-Wimplicit-function-declaration]
697 | HMAC_CTX_cleanup(c);
| ^~~~~~~~~~~~~~~~
src/lcrypto.c: In function ‘hmac_fdigest’:
src/lcrypto.c:711:14: error: storage size of ‘c’ isn’t known
711 | HMAC_CTX c;
| ^
src/lcrypto.c: In function ‘sign_pnew’:
src/lcrypto.c:747:61: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_MD_CTX’ {aka ‘struct evp_md_ctx_st’}
747 | EVP_MD_CTX *c = (EVP_MD_CTX *)lua_newuserdata(L, sizeof(EVP_MD_CTX));
| ^~~~~~~~~~
src/lcrypto.c: In function ‘sign_fsign’:
src/lcrypto.c:828:20: error: storage size of ‘c’ isn’t known
828 | EVP_MD_CTX c;
| ^
src/lcrypto.c: In function ‘verify_pnew’:
src/lcrypto.c:857:61: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_MD_CTX’ {aka ‘struct evp_md_ctx_st’}
857 | EVP_MD_CTX *c = (EVP_MD_CTX *)lua_newuserdata(L, sizeof(EVP_MD_CTX));
| ^~~~~~~~~~
src/lcrypto.c: In function ‘verify_fverify’:
src/lcrypto.c:940:20: error: storage size of ‘c’ isn’t known
940 | EVP_MD_CTX c;
| ^
src/lcrypto.c: In function ‘rand_pseudo_bytes’:
src/lcrypto.c:992:5: warning: ‘RAND_pseudo_bytes’ is deprecated [-Wdeprecated-declarations]
992 | return rand_do_bytes(L, RAND_pseudo_bytes);
| ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
from /usr/include/openssl/err.h:13,
from src/lcrypto.c:7:
/usr/include/openssl/rand.h:44:1: note: declared here
44 | DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num))
| ^~~~~~~~~~~~~~~~~~
src/lcrypto.c: In function ‘pkey_generate’:
src/lcrypto.c:1064:9: warning: ‘RSA_generate_key’ is deprecated [-Wdeprecated-declarations]
1064 | RSA *rsa = RSA_generate_key(key_len, RSA_F4, NULL, NULL);
| ^~~
In file included from /usr/include/openssl/e_os2.h:13,
from /usr/include/openssl/err.h:13,
from src/lcrypto.c:7:
/usr/include/openssl/rsa.h:235:1: note: declared here
235 | DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
| ^~~~~~~~~~~~~~~~~~
src/lcrypto.c:1074:9: warning: ‘DSA_generate_parameters’ is deprecated [-Wdeprecated-declarations]
1074 | DSA *dsa = DSA_generate_parameters(key_len, NULL, 0, NULL, NULL, NULL, NULL);
| ^~~
In file included from /usr/include/openssl/e_os2.h:13,
from /usr/include/openssl/err.h:13,
from src/lcrypto.c:7:
/usr/include/openssl/dsa.h:117:1: note: declared here
117 | DEPRECATEDIN_0_9_8(DSA *DSA_generate_parameters(int bits,
| ^~~~~~~~~~~~~~~~~~
src/lcrypto.c: In function ‘pkey_to_pem’:
src/lcrypto.c:1164:27: error: dereferencing pointer to incomplete type ‘struct evp_pkey_st’
1164 | if (private && pkey_st->type == EVP_PKEY_DSA)
| ^~
src/lcrypto.c: In function ‘pkey_tostring’:
src/lcrypto.c:1277:60: error: dereferencing pointer to incomplete type ‘EVP_PKEY’ {aka ‘struct evp_pkey_st’}
1277 | sprintf(buf, "%s %s %d %p", LUACRYPTO_PKEYNAME, (*pkey)->type == EVP_PKEY_DSA ? "DSA" : "RSA", EVP_PKEY_bits(*pkey), pkey);
| ^~
src/lcrypto.c: In function ‘seal_pnew’:
src/lcrypto.c:1299:46: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘struct evp_cipher_ctx_st’}
1299 | c->ctx = (EVP_CIPHER_CTX *)malloc(sizeof(EVP_CIPHER_CTX));
| ^~~~~~~~~~~~~~
In file included from src/lcrypto.c:8:
src/lcrypto.c: In function ‘seal_tostring’:
src/lcrypto.c:1320:81: error: dereferencing pointer to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘struct evp_cipher_ctx_st’}
1320 | sprintf(s, "%s %p %s", LUACRYPTO_SEALNAME, (void *)c, EVP_CIPHER_name(c->ctx->cipher));
| ^~
src/lcrypto.c: In function ‘seal_fseal’:
src/lcrypto.c:1400:20: error: storage size of ‘ctx’ isn’t known
1400 | EVP_CIPHER_CTX ctx;
| ^~~
src/lcrypto.c: In function ‘open_pnew’:
src/lcrypto.c:1483:46: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘struct evp_cipher_ctx_st’}
1483 | c->ctx = (EVP_CIPHER_CTX *)malloc(sizeof(EVP_CIPHER_CTX));
| ^~~~~~~~~~~~~~
src/lcrypto.c: In function ‘open_fopen’:
src/lcrypto.c:1602:20: error: storage size of ‘ctx’ isn’t known
1602 | EVP_CIPHER_CTX ctx;
| ^~~
Error: Failed installing dependency: https://luarocks.org/luacrypto-0.3.2-2.src.rock - Build error: Failed compiling object src/lcrypto.o
Now, how to proceed further to make it work.

Answer 1

The following solution worked for me:
sudo apt-get install libssl1.0-dev
Reference