Error compiling latest yara-python code

Start with setup.py and the YARA submodule build path, then compare the flags in yara/configure.ac with the gcc invocation shown in the report. Inspect yara/libyara/tlshc/tlsh_impl.h to trace the missing definitions. Done means yara-python builds successfully on the reported Rocky Linux environment with the TLSH configuration flags applied.

Hi,

I'm trying to compile the latest yara-python code (version 4.2.3), and I'm getting a compilation error. I'm doing the build on a system running Rocky Linux 8.5. These are the commands I'm using to build the code:

git clone --recursive https://github.com/VirusTotal/yara-python
cd yara-python
python3 setup.py build

These are the compilation errors I'm getting:

gcc -pthread -Wno-unused-result -Wsign-compare -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fPIC -D_GNU_SOURCE=1 -DUSE_LINUX_PROC=1 -DHAVE_STDBOOL_H=1 -DHAVE_MEMMEM=1 -DHASH_MODULE=1 -DHAVE_LIBCRYPTO=1 -Iyara/libyara/include -Iyara/libyara/ -I. -I/usr/include/python3.6m -c yara/libyara/tlshc/tlsh.c -o build/temp.linux-x86_64-3.6/yara/libyara/tlshc/tlsh.o -std=c99
In file included from yara/libyara/tlshc/tlsh.c:3:
yara/libyara/tlshc/tlsh_impl.h:61:28: error: ‘TLSH_CHECKSUM_LEN’ undeclared here (not in a function)
unsigned char checksum[TLSH_CHECKSUM_LEN];
^~~~~~~~~~~~~~~~~
yara/libyara/tlshc/tlsh_impl.h:72:28: error: ‘CODE_SIZE’ undeclared here (not in a function); did you mean ‘FD_SETSIZE’?
unsigned char tmp_code[CODE_SIZE];
^~~~~~~~~
FD_SETSIZE
error: command 'gcc' failed with exit status 1

I successfully built yara 4.2.3 from source earlier; I'm only getting this error when building yara-python.

While looking into the error, I found the following lines in yara/configure.ac, which appear to set the proper variables in order to define the missing TLSH_CHECKSUM_LEN and CODE_SIZE variables:

Configure TLSH function

CFLAGS="$CFLAGS -DBUCKETS_128=1 -DCHECKSUM_1B=1"

These extra flags don't appear to be passed along to gcc, however.

Any ideas would be greatly appreciated.

Thanks,
-Bill