diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index e45564b..78253bf 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -26,9 +26,15 @@ jobs:
     - name: ln Linux
       if: ${{ startsWith(matrix.target, 'ubuntu') }}
       run: ln -s Makefile.Linux Makefile
+    - name: Linux libraries
+      if: ${{ startsWith(matrix.target, 'ubuntu') }}
+      run: sudo apt install libssl-dev libpam-dev
     - name: ln Mac
       if: ${{ startsWith(matrix.target, 'macos') }}
       run: ln -s Makefile.FreeBSD Makefile
+    - name: Mac variables
+      if: ${{ startsWith(matrix.target, 'macos') }}
+      run: echo "LDFLAGS=-L/usr/local/opt/openssl/lib -L/opt/homebrew/opt/openssl/lib" >> $GITHUB_ENV && echo "CFLAGS=-I/usr/local/opt/openssl/include -I/opt/homebrew/opt/openssl/include" >> $GITHUB_ENV
     - name: ln Windows
       if: ${{ startsWith(matrix.target, 'windows') }}
       run: copy Makefile.win Makefile
diff --git a/Makefile.FreeBSD b/Makefile.FreeBSD
index 6431d40..81857ff 100644
--- a/Makefile.FreeBSD
+++ b/Makefile.FreeBSD
@@ -30,12 +30,12 @@ TYPECOMMAND = cat
 COMPATLIBS =
 MAKEFILE = Makefile.FreeBSD
 PLUGINS ?= StringsPlugin TrafficPlugin PCREPlugin TransparentPlugin
-OPENSSL_CHECK = $(shell echo "\#include <openssl/ssl.h>\\n int main(){return 0;}" | cc -x c -l crypto -l ssl -o testssl - 2>/dev/null && rm testssl && echo true||echo false)
+OPENSSL_CHECK = $(shell echo "\#include <openssl/ssl.h>\\n int main(){return 0;}" | cc -x c $(CFLAGS) $(LDFLAGS) -l crypto -l ssl -o testssl - 2>/dev/null && rm testssl && echo true||echo false)
 ifeq ($(OPENSSL_CHECK), true)
     LIBS += -l crypto -l ssl
     PLUGINS += SSLPlugin
 endif
-PAM_CHECK = $(shell echo "\#include <security/pam_appl.h>\\n int main(){return 0;}" | cc -x c -l pam -o testpam - 2>/dev/null && rm testpam && echo true||echo false)
+PAM_CHECK = $(shell echo "\#include <security/pam_appl.h>\\n int main(){return 0;}" | cc -x c $(CFLAGS) $(LDFLAGS) -l pam -o testpam - 2>/dev/null && rm testpam && echo true||echo false)
 ifeq ($(PAM_CHECK), true)
     PLUGINS += PamAuth
 endif
diff --git a/Makefile.Linux b/Makefile.Linux
index ad1d713..21bb004 100644
--- a/Makefile.Linux
+++ b/Makefile.Linux
@@ -36,12 +36,12 @@ MAKEFILE = Makefile.Linux
 LIBS ?= -ldl 
 #PLUGINS = SSLPlugin StringsPlugin TrafficPlugin PCREPlugin TransparentPlugin PamAuth
 PLUGINS ?= StringsPlugin TrafficPlugin PCREPlugin TransparentPlugin
-OPENSSL_CHECK = $(shell echo "\#include <openssl/ssl.h>\\n int main(){return 0;}" | cc -x c -l crypto -l ssl -o testssl - 2>/dev/null && rm testssl && echo true||echo false)
+OPENSSL_CHECK = $(shell echo "#include <openssl/ssl.h>\\n int main(){return 0;}" | cc -x c $(CFLAGS) $(LDFLAGS) -l crypto -l ssl -o testssl - 2>/dev/null && rm testssl && echo true||echo false)
 ifeq ($(OPENSSL_CHECK), true)
     LIBS += -l crypto -l ssl
     PLUGINS += SSLPlugin
 endif
-PAM_CHECK = $(shell echo "\#include <security/pam_appl.h>\\n int main(){return 0;}" | cc -x c -l pam -o testpam - 2>/dev/null && rm testpam && echo true||echo false)
+PAM_CHECK = $(shell echo "#include <security/pam_appl.h>\\n int main(){return 0;}" | cc -x c $(CFLAGS) $(LDFLAGS) -l pam -o testpam - 2>/dev/null && rm testpam && echo true||echo false)
 ifeq ($(PAM_CHECK), true)
     PLUGINS += PamAuth
 endif
diff --git a/Makefile.unix b/Makefile.unix
index 8642b24..f062e93 100644
--- a/Makefile.unix
+++ b/Makefile.unix
@@ -34,12 +34,12 @@ TYPECOMMAND = cat
 COMPATLIBS =
 MAKEFILE = Makefile.unix
 PLUGINS ?= StringsPlugin TrafficPlugin PCREPlugin TransparentPlugin
-OPENSSL_CHECK = $(shell echo "\#include <openssl/ssl.h>\\n int main(){return 0;}" | cc -x c -l crypto -l ssl -o testssl - 2>/dev/null && rm testssl && echo true||echo false)
+OPENSSL_CHECK = $(shell echo "\#include <openssl/ssl.h>\\n int main(){return 0;}" | cc -x c $(CFLAGS) $(LDFLAGS) -l crypto -l ssl -o testssl - 2>/dev/null && rm testssl && echo true||echo false)
 ifeq ($(OPENSSL_CHECK), true)
     LIBS += -l crypto -l ssl
     PLUGINS += SSLPlugin
 endif
-PAM_CHECK = $(shell echo "\#include <security/pam_appl.h>\\n int main(){return 0;}" | cc -x c -l pam -o testpam - 2>/dev/null && rm testpam && echo true||echo false)
+PAM_CHECK = $(shell echo "\#include <security/pam_appl.h>\\n int main(){return 0;}" | cc -x c $(CFLAGS) $(LDFLAGS) -l pam -o testpam - 2>/dev/null && rm testpam && echo true||echo false)
 ifeq ($(PAM_CHECK), true)
     PLUGINS += PamAuth
 endif