try to fix CI

Author: CamJN

.github/workflows/actions.yml

@@ -142,6 +142,8 @@ jobs:
       GIT_COMMITTER_EMAIL: 41898282+github-actions[bot]@users.noreply.github.com
       MACOS_VER_NUM: 14
       CERT_IDENTITY: me
+      LDLIBS: -lgetargv
+      CXXFLAGS: -Iinclude
     steps:
     - uses: actions/checkout@v4
       with:

Makefile-variables

@@ -27,23 +27,22 @@ LIB_DIR = lib
 PKG_DIR = pkg
 FAKE_ROOT = fakeroot
 CXX = clang++
-CPPFLAGS += -MMD -MP
+CPPFLAGS := -MMD -MP
 
 COMPILER_VERSION		:= $(shell $(CXX) --version | grep version | grep -o -m 1 "[0-9]\+\.[0-9]\+\.*[0-9]*" | head -n 1)
 COMPILER_VERSION_NUMBER		:= $(shell echo $(COMPILER_VERSION) | sed -e 's/\.\([0-9][0-9]\)/\1/g' -e 's/\.\([0-9]\)/0\1/g' -e 's/^[0-9]\{3,4\}$$/&00/')
 CLANG_13_OR_MORE		:= $(shell expr $(COMPILER_VERSION_NUMBER) \>= 130106)
 ifneq ($(CLANG_13_OR_MORE),0)
 # supported: c++11, c++14, c++17, c++20
 # future: c++2b
-CXXFLAGS := --std=c++20 -O3 -Iinclude
+CXXFLAGS := --std=c++20 -O3 -Iinclude $(shell pkg-config --cflags getargv)
 else
-CXXFLAGS := --std=c++17 -O3 -Iinclude
+CXXFLAGS := --std=c++17 -O3 -Iinclude $(shell pkg-config --cflags getargv)
 endif
-CXXFLAGS += $(shell pkg-config --cflags getargv)
 
 EXTRA_CXXFLAGS := -pedantic-errors -Weverything -Wno-c++98-compat -Wno-pre-c++20-compat-pedantic -Wno-poison-system-directories
-LDFLAGS += -Llib -fvisibility=default -fPIC
-LDLIBS += $(shell pkg-config --libs getargv)
+LDFLAGS := -Llib -fvisibility=default -fPIC
+LDLIBS := $(shell pkg-config --libs getargv)
 
 LIB_SHORT_NAME = getargv++
 LIB_NAME = lib$(LIB_SHORT_NAME)