Zabbix

# Be bourne shell compliant.

​

test -z "$CC" && CC=clang

​

# -Wall and -Wextra enable groups of other warning flags.

# Do not repeat them. See the Clang Diagnostic's Reference

# for details[1].

#

# Warning flags go first, followed by code generation convention

# flags (i.e. -f..)[2].

# DO NOT list machine-specific flags (i.e. -m..)[3] here.

#

# --

# [_]: https://clang.llvm.org/docs/UsersManual.html

# [1]: https://clang.llvm.org/docs/DiagnosticsReference.html

# [2]: [_]#controlling-code-generation

# [3]: [_]#target-specific-features-and-limitations

test -z "$CFLAGS"                                                            \

    && CFLAGS="-O2 -g"                                                       \

    && CFLAGS="$CFLAGS -Wall -Wextra"                                        \

    && CFLAGS="$CFLAGS -Wincompatible-pointer-types"                         \

    && CFLAGS="$CFLAGS -Wnull-dereference -Wpointer-arith"                   \

    && CFLAGS="$CFLAGS -Wwrite-strings"                                      \

    && CFLAGS="$CFLAGS -Woverlength-strings"