diff --git a/configure b/configure
index 4eb116b2bb..fc256b1953 100755
--- a/configure
+++ b/configure
@@ -1216,14 +1216,6 @@ EOF
 
 check_lib(){
     log check_lib "$@"
-    header="$1"
-    func="$2"
-    shift 2
-    check_header $header && check_func $func "$@" && add_extralibs "$@"
-}
-
-check_lib2(){
-    log check_lib2 "$@"
     headers="$1"
     funcs="$2"
     shift 2
@@ -1328,19 +1320,11 @@ check_compile_assert(){
 }
 
 require(){
-    name="$1"
-    header="$2"
-    func="$3"
-    shift 3
-    check_lib $header $func "$@" || die "ERROR: $name not found"
-}
-
-require2(){
     name="$1"
     headers="$2"
     func="$3"
     shift 3
-    check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
+    check_lib "$headers" $func "$@" || die "ERROR: $name not found"
 }
 
 require_cpp(){
@@ -5581,7 +5565,7 @@ check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
 check_func  access
 check_func_headers stdlib.h arc4random
 check_func_headers time.h clock_gettime ||
-    { check_lib2 time.h clock_gettime -lrt && LIBRT="-lrt"; }
+    { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
 check_func  fcntl
 check_func  fork
 check_func  gethrtime
@@ -5595,7 +5579,7 @@ check_func  mmap
 check_func  mprotect
 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
 check_func_headers time.h nanosleep ||
-    { check_lib2 time.h nanosleep -lrt && LIBRT="-lrt"; }
+    { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
 check_func  sched_getaffinity
 check_func  setrlimit
 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
@@ -5663,9 +5647,10 @@ check_header asm/types.h
 # so we also check that atomics actually work here
 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
 
-check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
-check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
-check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
+check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
+check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
+check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
+
 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
 
 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
@@ -5729,9 +5714,9 @@ fi
 enabled pthreads &&
     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
 
-disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
-disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
-disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
+disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
+disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
+disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
 
 check_lib math.h sin -lm && LIBM="-lm"
 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
@@ -5752,8 +5737,8 @@ done
 
 # these are off by default, so fail if requested and not available
 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
-enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
-                                check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
+enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
+                                check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
 enabled cuda              && check_header cuda.h # this is not a dependency
 enabled cuvid             && { enabled cuda ||
                                die "ERROR: CUVID requires CUDA"; }
@@ -5763,10 +5748,10 @@ enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || di
 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
-enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
+enabled gmp               && require gmp gmp.h mpz_export -lgmp
 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
-                               check_lib2 "dlfcn.h" dlopen -ldl; }
+                               check_lib "dlfcn.h" dlopen -ldl; }
 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
@@ -5780,7 +5765,7 @@ enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aac
                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
                                  warn "using libfdk without pkg-config"; } }
 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
-enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
+enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
 enabled fontconfig        && enable libfontconfig
 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
 enabled libfreetype       && require_libfreetype
@@ -5803,11 +5788,11 @@ enabled libopencv         && { check_header opencv2/core/core_c.h &&
                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
-enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
-                               check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
-                               { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
-                               { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
-                               { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
+enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
+                               check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
+                               { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
+                               { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
+                               { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
                                die "ERROR: libopenjpeg not found"; }
 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
@@ -5835,22 +5820,22 @@ enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_in
 enabled libvpx            && {
     enabled libvpx_vp8_decoder && {
         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
-            check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
+            check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
                 die "ERROR: libvpx decoder version must be >=0.9.1";
     }
     enabled libvpx_vp8_encoder && {
         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
-            check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
+            check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
                 die "ERROR: libvpx encoder version must be >=0.9.7";
     }
     enabled libvpx_vp9_decoder && {
         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
-            check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
+            check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
                 disable libvpx_vp9_decoder;
     }
     enabled libvpx_vp9_encoder && {
         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
-            check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
+            check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
                 disable libvpx_vp9_encoder;
     }
     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
@@ -5895,16 +5880,16 @@ enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lO
                                die "ERROR: openal not found"; } &&
                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
-enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
-                               check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
+enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
+                               check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
                                die "ERROR: opencl not found"; } &&
                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
-                               check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
-                               check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
-                               check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
+                               check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
+                               check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
+                               check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
                                die "ERROR: opengl not found."
                              }
 enabled omx_rpi && enable omx
@@ -5939,7 +5924,7 @@ if enabled gcrypt; then
             die "ERROR: gcrypt not found"
         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
     else
-        require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
+        require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
     fi
 fi
 
@@ -5966,7 +5951,7 @@ fi
 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
 
 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
-    check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
+    check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
     enable securetransport; }
 
 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
@@ -6017,16 +6002,16 @@ fi
 check_header soundcard.h
 
 enabled_any alsa_indev alsa_outdev &&
-    check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
+    check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
 
-enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
+enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
     check_func jack_port_get_latency_range -ljack
 
-enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
+enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
 
 if enabled libcdio; then
-    check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
-    check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
     die "ERROR: No usable libcdio/cdparanoia found"
 fi
 
@@ -6081,10 +6066,10 @@ enabled vaapi &&
 
 if enabled vaapi ; then
     enabled xlib &&
-    check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
+    check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
     enable vaapi_x11
 
-    check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
+    check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
     enable vaapi_drm
 fi
 
@@ -6093,7 +6078,7 @@ enabled vdpau &&
     disable vdpau
 
 enabled vdpau && enabled xlib &&
-    check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
+    check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
     enable vdpau_x11
 
 if enabled x86; then
@@ -6117,7 +6102,7 @@ int main(void) { return 0; }
 EOF
 
 # Funny iconv installations are not unusual, so check it after all flags have been set
-disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
+disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
 
 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"