Building with glibc-1.31+

[harpreetsc1992]

Hello,
I'm using a system with glibc-1.35. It seems that crypt.h has been deprecated from 1.31. Has anyone compiled dropbear with the newer glibc versions?
For context, these are the errors I'm getting:
_
In file included from src/options.h:29,
from src/includes.h:28,
from src/buffer.c:27:
src/sysoptions.h:297:36: warning: "HAVE_CRYPT" is not defined, evaluates to 0 [-Wundef]

297 | #if DROPBEAR_SVR_PASSWORD_AUTH && !HAVE_CRYPT
src/sysoptions.h:298:10: error: #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."

298 | #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."

In file included from src/options.h:29,
from src/includes.h:28,
from src/dbhelpers.c:2:
src/sysoptions.h:297:36: warning: "HAVE_CRYPT" is not defined, evaluates to 0 [-Wundef]
297 | #if DROPBEAR_SVR_PASSWORD_AUTH && !HAVE_CRYPT

src/sysoptions.h:298:10: error: #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."
298 | #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."

In file included from src/options.h:29,
from src/includes.h:28,
from src/dss.c:25:
src/sysoptions.h:297:36: warning: "HAVE_CRYPT" is not defined, evaluates to 0 [-Wundef]
297 | #if DROPBEAR_SVR_PASSWORD_AUTH && !HAVE_CRYPT

src/sysoptions.h:298:10: error: #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."
298 | #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."

In file included from src/options.h:29,
from src/includes.h:28,
from src/dbutil.c:64:
src/sysoptions.h:297:36: warning: "HAVE_CRYPT" is not defined, evaluates to 0 [-Wundef]
297 | #if DROPBEAR_SVR_PASSWORD_AUTH && !HAVE_CRYPT

src/sysoptions.h:298:10: error: #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."
298 | #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."

In file included from ./../src/options.h:29,
from src/headers/tomcrypt_dropbear.h:2,
from src/headers/tomcrypt_custom.h:13,
from src/headers/tomcrypt.h:22,
from src/ciphers/aes/aes.c:31:
./../src/sysoptions.h:297:36: warning: "HAVE_CRYPT" is not defined, evaluates to 0 [-Wundef]
297 | #if DROPBEAR_SVR_PASSWORD_AUTH && !HAVE_CRYPT

./../src/sysoptions.h:298:10: error: #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."
298 | #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."

In file included from ./../src/options.h:29,
from ./../src/dbmalloc.h:4,
from tommath_class.h:1322,
from tommath_class.h:1305,
from tommath_class.h:1305,
from tommath_class.h:1305,
from tommath_private.h:8,
from bn_cutoffs.c:1:
./../src/sysoptions.h:297:36: warning: "HAVE_CRYPT" is not defined, evaluates to 0 [-Wundef]
297 | #if DROPBEAR_SVR_PASSWORD_AUTH && !HAVE_CRYPT

./../src/sysoptions.h:298:10: error: #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."
298 | #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."
make[2]: *** [Makefile:246: src/ciphers/aes/aes.o] Error 1
make[2]: Leaving directory '/home/grads/h/harpreetsc/Documents/busybear-linux/build/dropbear-2024.84/libtomcrypt'
make[1]: *** [Makefile:255: libtomcrypt/libtomcrypt.a] Error 2
make[1]: *** Waiting for unfinished jobs....
riscv64-unknown-linux-gnu-gcc -c -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fPIE -Wundef -fno-strict-overflow -Wno-pointer-sign -Os -W -Wall -I. -I../libtomcrypt/src/headers/ -I./../libtomcrypt/src/headers/ -I../ -I./../src -Wno-deprecated -I./src/../libtomcrypt/src/headers/ -I. -I./src -DDROPBEAR_SERVER -DDROPBEAR_CLIENT -I./ -Wall -Wsign-compare -Wextra -Wshadow -Wdeclaration-after-statement -Wbad-function-cast -Wcast-align -Wstrict-prototypes -Wpointer-arith -Wsystem-headers -O3 -funroll-loops -fomit-frame-pointer bn_deprecated.c -o bn_deprecated.o
make[2]: *** [Makefile:40: bn_cutoffs.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [Makefile:169: obj/dss.o] Error 1
make[1]: *** [Makefile:169: obj/buffer.o] Error 1
In file included from ./../src/options.h:29,
from ./../src/dbmalloc.h:4,
from tommath_class.h:1322,
from tommath_class.h:1305,
from tommath_class.h:1305,
from tommath_class.h:1305,
from tommath_private.h:8,
from bn_deprecated.c:1:
./../src/sysoptions.h:297:36: warning: "HAVE_CRYPT" is not defined, evaluates to 0 [-Wundef]
297 | #if DROPBEAR_SVR_PASSWORD_AUTH && !HAVE_CRYPT

./../src/sysoptions.h:298:10: error: #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."
298 | #error "DROPBEAR_SVR_PASSWORD_AUTH requires 'crypt()'."

make[2]: *** [Makefile:40: bn_deprecated.o] Error 1
make[2]: Leaving directory '/home/grads/h/harpreetsc/Documents/busybear-linux/build/dropbear-2024.84/libtommath'
make[1]: *** [Makefile:258: libtommath/libtommath.a] Error 2
make[1]: *** [Makefile:169: obj/dbutil.o] Error 1
make[1]: *** [Makefile:169: obj/dbhelpers.o] Error 1
make[1]: Leaving directory '/home/grads/h/harpreetsc/Documents/busybear-linux/build/dropbear-2024.84'
make: *** [Makefile:10: busybear.bin] Error 2
_

Or am I just interpreting the error wrong?

[mkj]

This sounds the same as #143 , does that help?

[mkj]

What platform are you building on?
Building against libxcrypt should have worked. Can you look in config.log what is recorded when it looks for crypt?

[harpreetsc1992]

@mkj Thanks for the quick replies.
My system is Linux 5.15.0-100-generic (Ubuntu Jammy) on an x86_64 system, gcc-11.4.0.

There seems to be checks at multiple places for crypt (along with other errors - which can again be version mismatch), and the message can get really long. I am attaching the config.log file with the message. Will it be okay to do so?
config.log

I am not sure where exactly I'm messing up.

[mkj]

configure:5346: checking for crypt in -lcrypt
configure:5369: riscv64-unknown-linux-gnu-gcc -o conftest -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fPIE -Wundef -fno-strict-overflow -Wno-pointer-sign -Os -W -Wall  -Wl,-z,now -Wl,-z,relro -pie  conftest.c -lcrypt   >&5
/home/grads/h/harpreetsc/Documents/keystone/riscv/lib/gcc/riscv64-unknown-linux-gnu/13.2.0/../../../../riscv64-unknown-linux-gnu/bin/ld: cannot find -lcrypt: No such file or directory

It can't find libcrypt. Did libxcrypt get built for riscv64 and installed to a path that the riscv toolchain will find?