Build failed.

[zhaowq32]

Hi.I want to build a json-c static lib for android.But i have some errors.

error: implicit declaration of function 'uselocale' is invalid in C99 [-Werror,-Wimplicit-function-declaration]

And this is my command:

C:\Users\TT\AppData\Local\Android\Sdk\ndk-bundle\toolchains\llvm\prebuilt\windows-x86_64\bin\clang.exe   
-D HAVE_SETLOCALE --target=armv7-none-linux-androideabi 
--gcc-toolchain=C:/Users/TT/AppData/Local/Android/Sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64 
--sysroot=C:/Users/TT/AppData/Local/Android/Sdk/ndk-bundle/sysroot  
-I../../../../src/main/cpp/cstring/include -Isrc/main/cpp/json_c/src/include 
-isystem C:/Users/TT/AppData/Local/Android/Sdk/ndk-bundle/sysroot/usr/include/arm-linux-androideabi -D__ANDROID_API__=15 
-g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong 
-no-canonical-prefixes -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 
-fno-integrated-as -mthumb -Wa,--noexecstack -Wformat -Werror=format-security  
-Werror -D_GNU_SOURCE -O0 -fno-limit-debug-info  -std=gnu99 -MD 
-MT src/main/cpp/json_c/src/CMakeFiles/json-c.dir/json_tokener.c.o 
-MF src\main\cpp\json_c\src\CMakeFiles\json-c.dir\json_tokener.c.o.d 
-o src/main/cpp/json_c/src/CMakeFiles/json-c.dir/json_tokener.c.o   
-c D:\Develope\Android_Projects\SecurePart\app\src\main\cpp\json_c\src\json_tokener.c

This is the error code:

#ifdef HAVE_USELOCALE
  locale_t oldlocale = uselocale(NULL);
  locale_t newloc;
#elif defined(HAVE_SETLOCALE)
  char *oldlocale = NULL;
#endif

BTW I have defined "HAVE_SETLOCALE".

[hawicz]

Variables like HAVE_USELOCALE and HAVE_SETLOCALE are intended to be set or unset in config.h, created by running the configure script. If you've decided to manually populate config.h (not recommended), then it sounds like you should undefine HAVE_USELOCALE.

[zhaowq32]

THX.It's worked.