Fix missing libpcre2 dependency on macOS GitHub runner

Identified an issue where the macOS GitHub runner no longer includes the libpcre2 library by default. Updated the workflow configuration to explicitly add libpcre2 as a dependency, ensuring successful builds and compatibility with the updated build system.

This change prevents build failures on macOS environments and aligns the runner's setup with project requirements.

Author: Gabor Berkes

.github/workflows/ci.yml

@@ -105,6 +105,7 @@ jobs:
                        geoip \
                        ssdeep \
                        pcre \
+                       pcre2 \
                        bison \
                        flex
       - uses: actions/checkout@v4

build/pcre2.m4

@@ -29,10 +29,12 @@ if test "x${with_pcre2}" == "xno"; then
     AC_MSG_NOTICE([Support for PCRE2 was disabled by the utilization of --without-pcre2 or --with-pcre2=no])
     PCRE2_DISABLED=yes
 else
-    if test "x${with_pcre2}" == "xyes"; then
-        PCRE2_MANDATORY=yes
-        AC_MSG_NOTICE([PCRE2 support was marked as mandatory by the utilization of --with-pcre2=yes])
-    fi
+     # pcre2 is the default
+     PCRE2_MANDATORY=yes
+#    if test "x${with_pcre2}" == "xyes"; then
+#        PCRE2_MANDATORY=yes
+#        AC_MSG_NOTICE([PCRE2 support was marked as mandatory by the utilization of --with-pcre2=yes])
+#    fi
 #        for x in ${PCRE2_POSSIBLE_LIB_NAMES}; do
 #            CHECK_FOR_PCRE2_AT(${x})
 #            if test -n "${PCRE2_VERSION}"; then
@@ -91,16 +93,21 @@ if test -z "${PCRE2_LDADD}"; then
         PCRE2_FOUND=-1
     fi
 else
-    PCRE2_FOUND=1
-    AC_MSG_NOTICE([using PCRE2 v${PCRE2_VERSION}])
-    PCRE2_CFLAGS="${PCRE2_CFLAGS}"
-    PCRE2_DISPLAY="${PCRE2_LDADD}, ${PCRE2_CFLAGS}"
-    AC_SUBST(PCRE2_VERSION)
-    AC_SUBST(PCRE2_LDADD)
-    AC_SUBST(PCRE2_LIBS)
-    AC_SUBST(PCRE2_LDFLAGS)
-    AC_SUBST(PCRE2_CFLAGS)
-    AC_SUBST(PCRE2_DISPLAY)
+    if test -z "${PCRE2_MANDATORY}"; then
+        PCRE2_FOUND=2
+        AC_MSG_NOTICE([PCRE2 is disabled by default.])
+    else
+        PCRE2_FOUND=1
+        AC_MSG_NOTICE([using PCRE2 v${PCRE2_VERSION}])
+        PCRE2_CFLAGS="${PCRE2_CFLAGS}"
+        PCRE2_DISPLAY="${PCRE2_LDADD}, ${PCRE2_CFLAGS}"
+        AC_SUBST(PCRE2_VERSION)
+        AC_SUBST(PCRE2_LDADD)
+        AC_SUBST(PCRE2_LIBS)
+        AC_SUBST(PCRE2_LDFLAGS)
+        AC_SUBST(PCRE2_CFLAGS)
+        AC_SUBST(PCRE2_DISPLAY)
+    fi
 fi