running `./build.sh` on Ubuntu 24.04 gives warnings: "warning: wildcard utils/*.h: non-POSIX variable name"

[Danrancan]

Describe the bug

When running ./build.sh I get the following warnings:

./build.sh
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'build'.
libtoolize: copying file 'build/libtool.m4'
libtoolize: copying file 'build/ltoptions.m4'
libtoolize: copying file 'build/ltsugar.m4'
libtoolize: copying file 'build/ltversion.m4'
libtoolize: copying file 'build/lt~obsolete.m4'
configure.ac:50: installing './compile'
configure.ac:45: installing './missing'
examples/multiprocess_c/Makefile.am: installing './depcomp'
src/Makefile.am:70: warning: wildcard actions/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/ctl/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/data/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/disruptive/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/transformations/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard debug_log/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard audit_log/writer/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard collection/backend/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard operators/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard parser/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard request_body_processor/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard utils/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard variables/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard engine/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard *.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/ctl/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/data/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/disruptive/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard actions/transformations/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard debug_log/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard audit_log/writer/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard collection/backend/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard operators/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard parser/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard request_body_processor/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard utils/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard variables/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard engine/*.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)
src/Makefile.am:70: warning: wildcard *.h: non-POSIX variable name
src/Makefile.am:70: (probably a GNU make extension)

Logs and dumps

Output of:

1. DebugLogs (level 9)
2. AuditLogs
3. Error logs
4. If there is a crash, the core dump file.

Notice: Be careful to not leak any confidential information.

To Reproduce

danran@myserver:/usr/local/src/ModSecurity/.build.sh

Expected behavior

No warnings

Server (please complete the following information):

• ModSecurity version (and connector): Cloned the Master i.e. git clone https://github.com/owasp-modsecurity/ModSecurity.git
• WebServer: [e.g. nginx-1.18.0] nginx v1.29.1
• OS (and distro): [e.g. Linux, archlinux] Ubuntu 24.04 for raspberry Pi 5 (aarch64)

[airween]

Hi @Danrancan,

thanks for letting us know this. Just to be sure: these are "only" warnings, right? And despite these warnings, you're able to build the engine, right?

We know about this issue - on some architectures we faced on this issue. The "problem" is that wildcard is a GNU Make extension, but automake tries to follow POSIX standards.

We should try to solve this (eg. if someone uses BSD Make, may be they will failed with build process)