It is detected as a part of the libdl check.
---
configure | 2 --
libavcodec/nvenc.c | 10 ++++------
2 files changed, 4 insertions(+), 8 deletions(-)
diff --git a/configure b/configure
index 48fdbce6e1..7e012b43e2 100755
--- a/configure
+++ b/configure
@@ -1563,7 +1563,6 @@ HEADERS_LIST="
dev_video_bktr_ioctl_bt848_h
dev_video_meteor_ioctl_meteor_h
direct_h
- dlfcn_h
dxgidebug_h
dxva_h
gsm_h
@@ -4643,7 +4642,6 @@ check_struct windows.h "CONDITION_VARIABLE" Ptr
check_header d3d11.h
check_header direct.h
-check_header dlfcn.h
check_header dxgidebug.h
check_header dxva.h
check_header dxva2api.h
diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index 884b344b96..a7171e4b17 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -28,12 +28,7 @@
#define CUDA_LIBNAME "libcuda.so"
-#if HAVE_DLFCN_H
-#include <dlfcn.h>
-
-#define NVENC_LIBNAME "libnvidia-encode.so"
-
-#elif HAVE_WINDOWS_H
+#if HAVE_WINDOWS_H
#include <windows.h>
#if ARCH_X86_64
@@ -45,6 +40,9 @@
#define dlopen(filename, flags) LoadLibrary((filename))
#define dlsym(handle, symbol) GetProcAddress(handle, symbol)
#define dlclose(handle) FreeLibrary(handle)
+#else
+#include <dlfcn.h>
+#define NVENC_LIBNAME "libnvidia-encode.so"
#endif
#include "libavutil/common.h"
--
2.11.0
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