# 将ffmpeg-4.2.1目录中configure 文件中的：
	SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)' 
	LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"' 
	SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)' 
	SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'

	#替换为：
	SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
	LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
	SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
	SLIB_INSTALL_LINKS='$(SLIBNAME)'

	dlopen failed: "has text relocations"
	解决方案：--disable-asm 
	在低版本手机中就会遇到这个问题：dlopen failed: cannot locate symbol "iconv_open"，”iconv_close“ ，只能降低API 版本

	1. In file included from libswscale/x86/rgb2rgb.c:102: 
	libswscale/x86/rgb2rgb_template.c:1666:13: error: inline assembly requires more 
	      registers than available 
	            "mov                        %4, %%"FF_REG_a"\n\t" 
	            ^ 
	In file included from libswscale/x86/rgb2rgb.c:136: 
	libswscale/x86/rgb2rgb_template.c:1666:13: error: inline assembly requires more 
	      registers than available 
	            "mov                        %4, %%"FF_REG_a"\n\t" 
	            ^ 
	In file included from libswscale/x86/rgb2rgb.c:109: 
	libswscale/x86/rgb2rgb_template.c:1666:13: error: inline assembly requires more 
	      registers than available 
	            "mov                        %4, %%"FF_REG_a"\n\t" 
        ^ 
解决方案：--disable-iconv 才可以解决