minifi-cpp: Remove the buildpath issue

Don't override CFLAGS and just append the "-fPIC" to CFLAGS to make
sure -fdebug-prefix-map option passed to compiler to fix the below
issue:
  WARNING: minifi-cpp-0.7.0-r0 do_package_qa: QA Issue: File /usr/bin/.debug/minificontroller in package minifi-cpp-dbg contains reference to TMPDIR
  File /usr/bin/.debug/minifi in package minifi-cpp-dbg contains reference to TMPDIR [buildpaths]

Pass the OPENSSLDIR to avoid introducing the build path to fix the
below issue:
  WARNING: minifi-cpp-0.7.0-r0 do_package_qa: QA Issue: File /usr/bin/minificontroller in package minifi-cpp contains reference to TMPDIR
  File /usr/bin/minifi in package minifi-cpp contains reference to TMPDIR [buildpaths]

Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-extended/minifi-cpp/minifi-cpp_0.7.0.bb

@@ -35,6 +35,8 @@ SRC_URI = "git://github.com/apache/nifi-minifi-cpp.git;branch=master;protocol=ht
             file://0001-Do-not-use-LFS64-functions-on-linux-musl.patch \
             file://0001-Fix-the-constness-issues-around-autovector-iterator_.patch \
             file://0002-Fix-build-with-clang-17.patch \
+            file://0001-CMakeLists.txt-Pass-the-OPENSSLDIR.patch \
+            file://0001-BundledOSSPUUID.cmake-Pass-CFLAGS-to-compiler.patch \
             file://minifi.service \
             file://systemd-volatile.conf \
             file://sysvinit-volatile.conf \
@@ -65,7 +67,10 @@ EXTRA_OECMAKE += " \
     -DDISABLE_PYTHON_SCRIPTING=ON \
     -DFLEX_TARGET_ARG_COMPILE_FLAGS='--noline' \
     -DBISON_TARGET_ARG_COMPILE_FLAGS='--no-lines --file-prefix-map=${S}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR}' \
+    -DOPENSSLDIR=${sysconfdir}/libressl \
     "
+
+CFLAGS:append = " -fPIC"
 EXTRA_OECMAKE:append:toolchain-clang = " -DCMAKE_RANLIB=${STAGING_BINDIR_TOOLCHAIN}/${TARGET_PREFIX}llvm-ranlib"
 LDFLAGS:append:toolchain-clang = " -fuse-ld=lld"