如何为Android构建Mupdf

Question

jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:5977: error: undefined reference to 'opj_has_thread_support'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:5980: error: undefined reference to 'opj_get_num_cpus'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:5957: error: undefined reference to 'opj_has_thread_support'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:5959: error: undefined reference to 'opj_thread_pool_destroy'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:5962: error: undefined reference to 'opj_thread_pool_create'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:5966: error: undefined reference to 'opj_thread_pool_create'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:7618: error: undefined reference to 'opj_thread_pool_destroy'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:6021: error: undefined reference to 'opj_thread_pool_create'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/j2k.c:6024: error: undefined reference to 'opj_thread_pool_create'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/tcd.c:1606: error: undefined reference to 'opj_thread_pool_wait_completion'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/dwt.c:647: error: undefined reference to 'opj_thread_pool_get_thread_count'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/dwt.c:706: error: undefined reference to 'opj_thread_pool_wait_completion'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/dwt.c:724: error: undefined reference to 'opj_thread_pool_wait_completion'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/dwt.c:729: error: undefined reference to 'opj_thread_pool_submit_job'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/dwt.c:731: error: undefined reference to 'opj_thread_pool_wait_completion'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/dwt.c:793: error: undefined reference to 'opj_thread_pool_submit_job'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/t1.c:1656: error: undefined reference to 'opj_tls_get'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/t1.c:1660: error: undefined reference to 'opj_tls_set'
jni/../../../../thirdparty/openjpeg/src/lib/openjp2/t1.c:1772: error: undefined reference to 'opj_thread_pool_submit_job'
collect2: error: ld returned 1 exit status

我尝试在Windows和ubuntu上使用ndk-build 64位进行编译时，在两台计算机上仍然出现相同的错误，我无法理解为什么存在此错误。

遵循此官方步骤

http://mupdf.com/docs/how-to-build-mupdf-for-android

Answer 1

更改APP_PLATFORM解决了我的问题。

我使用了本教程来为Android构建mupdf

确保在platform / android / viewer / jni / Application.mk中具有以下内容

对于android 5. *之前的版本* APP_PLATFORM=android-9

对于Android版本5. *及更高版本

APP_PLATFORM=android-16
APP_ABI := armeabi-v7a

CFLAGS += -fvisibility=default -fPIE
LDFLAGS += -rdynamic -fPIE -pie

这将解决您的问题

Answer 2

更新

您可以使用我的编译库：

https://github.com/itzharDev/MuPDF

如果要自己编译，请尝试使用Docker编译源代码

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我构建了Linux docker映像来编译MuPDF源码，我希望尽快发布该映像