diff --git a/configure b/configure
index 3243e23021..6d3f31fc95 100755
@@ -6630,7 +6630,7 @@ fi
 
 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
                    check_lib zlib   zlib.h      zlibVersion    -lz; }
-enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
+enabled bzlib && require_pkg_config bzlib bzip2 bzlib.h BZ2_bzlibVersion
 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
 
 enabled zlib && test_exec $zlib_extralibs <<EOF && enable zlib_gzip
@@ -6757,7 +6757,8 @@ if enabled libmfx; then
 fi
 
 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
-enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
+enabled libmp3lame        && { check_lib libmp3lame lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs || 
+                               require libmp3lame lame/lame.h lame_set_VBR_quality -llibmp3lame-static -llibmpghip-static $libm_extralibs; }
 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei -lnppif ||
@@ -6793,8 +6794,8 @@ enabled libshaderc        && require_pkg_config spirv_compiler "shaderc >= 2019.
 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
-enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
-enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
+enabled libsnappy         && require_pkg_config libsnappy snappy snappy-c.h snappy_compress
+enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr $libm_extralibs
 enabled libssh            && require_pkg_config libssh "libssh >= 0.6.0" libssh/sftp.h sftp_init
 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
@@ -6884,6 +6885,8 @@ enabled openal            && { check_pkg_config openal "openal >= 1.1" "AL/al.h"
 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
+                               check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL -lAdvapi32 -lOle32 -lCfgmgr32||
+                               check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL -pthread -ldl ||
                                die "ERROR: opencl not found"; } &&
                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
@@ -7208,10 +7211,10 @@ enabled amf &&
         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x00010004001d0000"
 
 # Funny iconv installations are not unusual, so check it after all flags have been set
-if enabled libc_iconv; then
+if enabled libc_iconv && disabled iconv; then
     check_func_headers iconv.h iconv
 elif enabled iconv; then
-    check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
+    check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv || check_lib iconv iconv.h iconv -liconv -lcharset
 fi
 
 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"