\n\n\u4e00\u3001 \u95ee\u9898\u5f15\u5165<\/b>\n\n\u5728\u5f53\u4e0b\u7684\u5f00\u53d1\u4e2d,\u5e94\u7528\u7684\u529f\u80fd\u505a\u7684\u8d8a\u6765\u8d8a\u590d\u6742,\u5de5\u7a0b\u4e5f\u8d8a\u6765\u8d8a\u5927,\u6240\u4ee5\u4e3a\u4e86\n\n\u5c3d\u53ef\u80fd\u7f29\u77ed\u5f00\u53d1\u5468\u671f,\u4e0d\u53ef\u907f\u514d\u7684\u4f1a\u7528\u5230\u8bb8\u591a\u7b2c\u4e09\u65b9\u5e93,\u968f\u4e4b\u800c\u6765\u7684\u4e5f\u4f1a\u9047\u5230\u597d\n\n\u591a\u95ee\u9898\u3002\u6bd4\u5982,\u7a0b\u5e8f\u8c03\u7528\u51fd\u6570funa,funa\u51fd\u6570\u4ece\u5728\u4e8e\u4e24\u4e2a\u5e93liba.a,libb.a\u4e2d,\n\n\u5e76\u4e14\u7a0b\u5e8f\u6267\u884c\u9700\u8981\u8fde\u63a5\u8fd9\u4e24\u4e2a\u5e93,\u90a3\u4e48\u7a0b\u5e8f\u6267\u884c\u65f6\u662f\u8c03\u7528liba.a\u4e2dfuna\u8fd8\u662f\u8c03\u7528\n\n\u7684libb.a\u4e2d\u7684funa\u5462?\n\n\u5176\u5b9e\u8fd9\u4e2a\u53d6\u51b3\u4e8e\u94fe\u63a5\u65f6\u7684\u987a\u5e8f,\u6bd4\u5982\u5148\u94fe\u63a5\u7684liba.a,\u8fd9\u4e2a\u65f6\u5019\u901a\u8fc7liba.a\u7684\u5bfc\u51fa\u7b26\u53f7\u8868\u5c31\u53ef\u4ee5\u627e\u5230funa\u5728liba.a\u4e2d\u5b9a\u4e49,\u5e76\u52a0\u5165\u7b26\u53f7\u8868\u4e2d;\u94fe\u63a5libb.a\u7684\n\n\u65f6\u5019\u53d1\u73b0\u7b26\u53f7\u8868\u5df2\u7ecf\u5b58\u5728funa,\u5c31\u4e0d\u4f1a\u518d\u6b21\u66f4\u65b0\u7b26\u53f7\u8868,\u6240\u4ee5\u8c03\u7528\u7684\u59cb\u7ec8\u662fliba.a\u4e2d\u7684funa\u51fd\u6570\u3002\n\n\u8fd9\u91cc\u7684\u8c03\u7528\u4e25\u91cd\u7684\u4f9d\u8d56\u4e8e\u94fe\u63a5\u5e93\u52a0\u8f7d\u7684\u987a\u5e8f,\u5f88\u5927\u7a0b\u5ea6\u4e0a\u4f1a\u5bfc\u81f4\u6df7\u8bba\u3002\u4f5c\u4e3aSDK\u7684\u63d0\u4f9b\u8005,\u6211\u4eec\u5c24\u5176\u8981\u907f\u514d\u8fd9\u70b9\u3002\n\n\u6b63\u5e38\u6211\u4eec\u4f7f\u7528\u7684\u5e93\u4e2d\u5305\u542b\u4e86\u597d\u591a\u7b26\u53f7\u4fe1\u606f,\u5982\u56fe1\u6240\u793a:\n
\n
\n
<\/div>\n
$\"\"$ <\/div>\n<\/div>\n
\u56fe1<\/div>\n<\/div>\n\u8fd9\u4e9b\u7b26\u53f7\u4fe1\u606f\u6709\u4ee5\u4e0b\u51e0\u4e2a\u5f0a\u7aef:<\/b>\n\n1\u3001\u589e\u5927\u4e86\u5e93\u7684\u4f53\u79ef;\n\n2\u3001\u9690\u853d\u6027\u8f83\u5dee;\n\n3\u3001\u5bb9\u6613\u5e26\u6765\u51b2\u7a81\u3002\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u7b2c\u4e09\u70b9\u5e26\u6765\u7684\u95ee\u9898\u5c24\u5176\u4e25\u91cd,\u7279\u522b\u662f\u5f53\u6211\u4eec\u63d0\u4f9b\u7684SDK\u7528\u5230\u7b2c\n\n\u4e09\u65b9\u5e93\u7684\u65f6\u5019(\u56e0\u4e3a\u4f7f\u7528\u6211\u4eecSDK\u7684\u5ba2\u6237\u4e5f\u6709\u53ef\u80fd\u7528\u5230\u8ddf\u6211\u4eec\u4e00\u6837\u7684\u7b2c\u4e09\u65b9\u5e93)\u3002\n\n\u4e8c\u3001 \u89e3\u51b3\u529e\u6cd5<\/b>\n\n1\u3001\u5bf9\u7b2c\u4e09\u65b9\u5e93\u5904\u7406 \u00a0(C\/C++)\n\n\u4e0b\u9762\u7ee7\u7eed\u4ee5x264(\u4e0b\u6587\u4ee5libx264.a\u5e26\u8fc7)\u4e3a\u4f8b\u8bf4\u660e\u5982\u4f55\u7f16\u8bd1\u7b2c\u4e09\u65b9\u7684\u5e93\u3002\n\n\u6ca1\u6709\u9690\u85cf\u7b26\u53f7\u7684\u7b2c\u4e09\u65b9\u5e93\u5982\u201c\u56fe1\u201d\u6240\u793a,\u51fd\u6570\u524d\u9762\u4f1a\u5e26\u6709external\u7684\u6807\u793a\u3002\n\n\u5728\u6700\u7ec8\u5bf9\u5916\u53d1\u5e03\u7684SDK\u4e2d_x264_predict_16x16_dc_c\u8fd8\u662f\u6253\u7740external\u7684\u6807\u7b7e,\n\n\u53ca\u5bf9\u5916\u53ef\u89c1\u3002\u5982\u56fe2\u6240\u793a:\n
\n
\n
<\/div>\n
$\"\"$ <\/div>\n<\/div>\n
\u56fe2<\/div>\n<\/div>\n\u9690\u85cf\u7b26\u53f7\u540e,\u5728libx264.a\u4e2d,\u539f\u5148\u6253\u4e0aexternal\u6807\u7b7e\u7684\u51fd\u6570,\u4f1a\u4ee5private external\u6807\u8bc6\u3002\u5982\u56fe3\u6240\u793a:\n
\n
\n
<\/div>\n
$\"\"$ <\/div>\n<\/div>\n
\u56fe3<\/div>\n<\/div>\n\u90a3\u4e48\u5982\u4f55\u624d\u80fd\u5f97\u5230\u6211\u4eec\u60f3\u8981\u7684\u3001\u6253\u4e0aprivate external\u6807\u7b7e\u7684\u5e93\u5462,\u6709\u4e24\u79cd\u65b9\n\n\u6cd5\u53ef\u4ee5\u505a\u5230\u3002\n\n1)\u5bf9\u6bcf\u4e2a\u51fd\u6570\u52a0\u5c5e\u6027__attribute__((visibility(\u201chidden\u201d))) void funa_hidden()\n\n{\n\nprintf(\u201chidden symbol\\n\u201d);\n\n}\n\nvoid funa_visible()\n\n{\n\nprintf(\u201cexported symbol\u201d);\n\n}\n\n\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5bf9\u6bcf\u4e2a\u51fd\u6570\u505a\u5b9a\u5236\u5904\u7406\u3002\u4f46\u82e5\u6211\u4eec\u7528\u5230\u7684\u4e09\u65b9\u5e93\u4ee3\u7801\u91cf\u5927,\u8fd9\u79cd\u65b9\u6cd5\u5c31\u662f\u8d39\u65f6\u8d39\u529b\u4e86\u3002\n\n2)\u7f16\u8bd1\u5e93\u65f6\u7edf\u4e00\u5904\u7406\n\n\u5229\u7528gcc\u7684\u6269\u5c55\u5c5e\u6027,\u7f16\u8bd1\u5e93\u65f6\u52a0\u4e0a-fvisibility=hidden\u3002\n\na)\u9759\u6001\u5e93\n\ngcc \u2013static \u2013o libtest.a \u2013fvisibility=hidden \u2013c test.c\n\nb)\u52a8\u6001\u5e93\n\ngcc \u2013dynamic \u2013o libtest.so \u2013fvisility=hidden \u2013c test.c,\u5176\u4e2ddynamic\u4e3aclang\u7684\u5199\u6cd5,\u5927\u90e8\u5206gcc\u5199\u6cd5\u4e3ashared\u3002\n\n\u4e0a\u8fb9\u4e24\u79cd\u65b9\u6cd5\u53ea\u5904\u7406\u4e86c\/c++,\u56e0\u4e3a\u8bed\u6cd5\u95ee\u9898,\u6c47\u7f16\u9700\u8981\u505a\u7279\u6b8a\u91cc,\u4f46\u4e5f\u662f\u5728\u51fd\u6570\u5934\u52a0\u5c5e\u6027,\u4f46\u5b83\u7684\u5c5e\u6027\u5199\u6cd5\u4e3a.private_extern\u3002.macro function name, export=0, align=2\n\n.macro endfunc\n\nELF .size \\name, .\n\n– \\name\n\nFUNC .endfunc\n\n.purgem endfunc\n\n.endm\n\n.text\n\n.align \\align\n\n.if \\export\n\n.global EXTERN_ASM\\name\n\nELF .type EXTERN_ASM\\name, %function\n\nFUNC .func EXTERN_ASM\\name\n\nEXTERN_ASM\\name:\n\n.private_extern\n\nEXTERN_ASM\\name\n\n.else\n\nELF .type\n\nFUNC .func \u00a0 \u00a0\\name: \u00a0 .endif\n\n.endm\n\n\\name, %function\n\n\\name\n\n\u56e0\u4e3a\u9700\u8981\u5904\u7406\u7684\u6c47\u7f16\u6587\u4ef6\u8f83\u5c11,\u6240\u4ee5\u5bf9\u6c47\u7f16\u91c7\u7528\u4e86\u76f4\u63a5\u7f16\u8f91\u6e90\u6587\u4ef6\u7684\u65b9\u6cd5\u3002\n\n\u5176\u5b9e\u4e2a\u4eba\u89c9\u5f97\u4e5f\u5e94\u8be5\u80fd\u5728\u7f16\u8bd1\u65f6\u505a\u7edf\u4e00\u5904\u7406,\u6709\u5174\u8da3\u7684\u53ef\u4ee5\u81ea\u5df1\u627e\u4e00\u4e0b\u65b9\u6cd5\u3002\n\n2\u3001\u5bf9xcode\u5de5\u7a0b\u7684\u5904\u7406 (iOS)<\/b>\n\n\u5bf9xcode\u5de5\u7a0b\u5904\u7406\u76f8\u5bf9\u76f4\u89c2\u3001\u7b80\u5355\u4e86\u8bb8\u591a\u3002\u53ea\u9700\u5728\u5de5\u7a0b\u7684\u8bbe\u7f6e\u91cc\u505a\u5982\u4e0b\u5904\u7406\u3002\n\n1)\u6253\u5f00\u5de5\u7a0b\u8bbe\u7f6e,\u8df3\u8f6c\u5230build setting\u9875\u9762;\n\n2)\u641c\u7d22hidden;\n\n3)\u5c06Symbols Hidden by Default\u8bbe\u7f6eYes;\n
\n
\n
<\/div>\n
$\"\"$ <\/div>\n<\/div>\n
\u56fe4<\/div>\n<\/div>\n\u5176\u5b9e\u901a\u8fc7\u89c2\u5bdf\u7f16\u8bd1\u7684\u8fc7\u7a0b\u53ef\u4ee5\u53d1\u73b0,\u901a\u8fc7\u4e0a\u8ff0\u8bbe\u7f6e,\u82f9\u679c\u6700\u7ec8\u5c06\u5176\u8f6c\u5316\u4e3a\u6b65\n\n\u9aa41\u7684\u547d\u4ee4\u8fdb\u884c\u7f16\u8bd1\u3002\u7f16\u8bd1\u7684\u7ed3\u679c\u4e5f\u662f\u5728\u5e93\u91cc\u52a0\u4e86private external\u800c\u5df2\u3002\n\n3\u3001\u7b26\u53f7\u5265\u79bb<\/b>\n\n\u6700\u540e\u4e00\u6b65,\u4e5f\u662f\u6700\u5173\u952e\u7684\u4e00\u6b65,\u5c31\u662f\u771f\u6b63\u5c06\u6b65\u9aa41\u6216\u6b65\u9aa42\u4e2d\u6253\u4e0aprivate\n\nexternal\u6807\u7b7e\u7684\u51fd\u6570\u505a\u6700\u7ec8\u7684\u5904\u7406,\u628a\u5b83\u4eec\u4ece\u8981\u53d1\u5e03\u7684\u5e93\u91cc\u5265\u79bb\u3002\n\n1)\u9996\u5148\u8bbe\u7f6eprelink\n\n\u5728target\u7684build setting\u91cc\u641c\u7d22prelink,\u5c06Perform Single-Object Prelink\u7f6e\u4e3a\n\nYes,\u7136\u540e\u628a\u8be5\u5de5\u7a0b\u9700\u8981\u7684\u5e93\u90fd\u76f4\u63a5\u62d6\u5230Prelink libraries\u4e2d\u3002\u5982\u56fe5\u6240\u793a:\n
\n
\n
<\/div>\n
$\"\"$ <\/div>\n<\/div>\n
\u56fe5<\/div>\n<\/div>\n2)\u8bbe\u7f6e post process\n\n\u5c06Deployment Postprocessing\u7f6e\u4e3aYes\u3002\u5982\u56fe6\u6240\u793a:\n
\n
\n
<\/div>\n
$\"\"$ <\/div>\n<\/div>\n
\u56fe6<\/div>\n<\/div>\n3)\u8bbe\u7f6e\u5265\u79bb\u65b9\u5f0f\n\n\u5c06Strip Style\u8bbe\u7f6e\u4e3aNon-Global Symbols\u3002\u5982\u56fe7\u6240\u793a:\n
\n
\n
<\/div>\n
$\"\"$ <\/div>\n<\/div>\n
\u56fe7<\/div>\n<\/div>\n\u5230\u76ee\u524d\u4e3a\u6b62,\u6240\u6709\u7684\u8bbe\u7f6e\u90fd\u5df2\u7ecf\u5b8c\u6210,\u63a5\u4e0b\u6765\u7f16\u8bd1\u3002\u6709\u5174\u8da3\u7684\u540c\u5b66\u53ef\u4ee5\u89c2\u5bdf\n\n\u4e00\u4e0b\u7f16\u8bd1\u7684\u8fc7\u7a0b,\u4f1a\u53d1\u73b0\u901a\u8fc7\u8bbe\u7f6eprelink,xcode\u4f1a\u5c06\u5e93\u91cc\u6240\u6709\u7684\u76ee\u6807\u6587\u4ef6\u6839\u636e\n\n\u4f60\u652f\u6301\u7684architecture\u5206\u7c7b\u6253\u5305,\u5982libxxx-armv7-master.o\/libxxx-arm64-master.o,\n\n\u6700\u540e\u4e00\u6b65\u6267\u884cStrip\u547d\u4ee4\u5c06\u6240\u6709\u9700\u8981\u9690\u85cf\u7684\u7b26\u53f7\u5265\u79bb\u3002\n\n<\/div>\n\u4f5c\u8005\uff1aatme\n\u94fe\u63a5\uff1ahttps:\/\/www.jianshu.com\/p\/761fca990325\n\u4f86\u6e90\uff1a\u7b80\u4e66\n\u7b80\u4e66\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\uff0c\u4efb\u4f55\u5f62\u5f0f\u7684\u8f6c\u8f7d\u90fd\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\u5e76\u6ce8\u660e\u51fa\u5904\u3002<\/div>","protected":false},"excerpt":{"rendered":"
\u4e00\u3001 \u95ee\u9898\u5f15\u5165 \u5728\u5f53\u4e0b\u7684\u5f00\u53d1\u4e2d,\u5e94\u7528\u7684\u529f\u80fd\u505a\u7684\u8d8a\u6765\u8d8a\u590d\u6742,\u5de5\u7a0b\u4e5f\u8d8a\u6765\u8d8a\u5927,\u6240\u4ee5\u4e3a\u4e86 \u5c3d\u53ef\u80fd\u7f29\u77ed\u5f00\u53d1\u5468\u671f,\u4e0d\u53ef\u907f\u514d\u7684\u4f1a\u7528\u5230\u8bb8\u591a\u7b2c\u4e09\u65b9\u5e93,\u968f\u4e4b\u800c\u6765\u7684\u4e5f\u4f1a\u9047\u5230\u597d \u591a\u95ee\u9898\u3002\u6bd4\u5982,\u7a0b\u5e8f\u8c03\u7528\u51fd\u6570funa,funa...<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[340],"tags":[],"class_list":["post-1768","post","type-post","status-publish","format-standard","hentry","category-mac-os"],"_links":{"self":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1768","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/comments?post=1768"}],"version-history":[{"count":1,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1768\/revisions"}],"predecessor-version":[{"id":1769,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1768\/revisions\/1769"}],"wp:attachment":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/media?parent=1768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/categories?post=1768"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/tags?post=1768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}