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Asked: 2026-05-29T16:25:43+00:00

How do i link up or use multiple .c files in the Android.mk file?

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How do i link up or “use” multiple .c files in the Android.mk file?

It currently looks like this 

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE    := ndk_demo
LOCAL_SRC_FILES := gnutls-3.0.12/lib/debug.c
include $(BUILD_SHARED_LIBRARY)

However, when i try and ndk-build it, it always throws this error

Compile thumb  : ndk_demo <= debug.c
In file included from jni/gnutls-3.0.12/lib/debug.c:25:
jni/gnutls-3.0.12/lib/gnutls_int.h:52:43: error: u64.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:57:24: error: gl/memxor.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:84:27: error: gnutls/gnutls.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:85:29: error: gnutls/abstract.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:86:20: error: system.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:202:24: error: gnutls_mem.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:219:24: error: gnutls_mpi.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:230:24: error: gnutls_str.h: No such file or directory
In file included from jni/gnutls-3.0.12/lib/debug.c:25:
jni/gnutls-3.0.12/lib/gnutls_int.h:276: error: expected specifier-qualifier-list before 'gnutls_handshake_description_t'
jni/gnutls-3.0.12/lib/gnutls_int.h:307: error: expected specifier-qualifier-list before 'gnutls_datum_t'
jni/gnutls-3.0.12/lib/gnutls_int.h:350: error: expected specifier-qualifier-list before 'gnutls_credentials_type_t'
jni/gnutls-3.0.12/lib/gnutls_int.h:361: error: expected specifier-qualifier-list before 'gnutls_pk_params_st'
jni/gnutls-3.0.12/lib/gnutls_int.h:418:29: error: gnutls_hash_int.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:419:31: error: gnutls_cipher_int.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:420:29: error: gnutls_compress.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_int.h:459: error: expected specifier-qualifier-list before 'gnutls_kx_algorithm_t'
jni/gnutls-3.0.12/lib/gnutls_int.h:506: error: expected specifier-qualifier-list before 'gnutls_datum_t'
jni/gnutls-3.0.12/lib/gnutls_int.h:527: error: expected specifier-qualifier-list before 'gnutls_cipher_algorithm_t'
jni/gnutls-3.0.12/lib/gnutls_int.h:543: error: 'GNUTLS_MAX_ALGORITHM_NUM' undeclared here (not in a function)
jni/gnutls-3.0.12/lib/gnutls_int.h:584: error: expected specifier-qualifier-list before 'bigint_t'
jni/gnutls-3.0.12/lib/gnutls_int.h:591: error: expected specifier-qualifier-list before 'gnutls_dh_params_t'
jni/gnutls-3.0.12/lib/gnutls_int.h:657: error: expected specifier-qualifier-list before 'gnutls_buffer_st'
jni/gnutls-3.0.12/lib/gnutls_int.h:882: error: expected ')' before 'session'
jni/gnutls-3.0.12/lib/gnutls_int.h:897: warning: parameter names (without types) in function declaration
jni/gnutls-3.0.12/lib/gnutls_int.h:898: error: expected '=', ',', ';', 'asm' or '__attribute__' before '_gnutls_get_adv_version'
jni/gnutls-3.0.12/lib/gnutls_int.h:903: error: expected '=', ',', ';', 'asm' or '__attribute__' before '_gnutls_protocol_get_version'
jni/gnutls-3.0.12/lib/gnutls_int.h:911: error: expected ')' before 'session'
In file included from jni/gnutls-3.0.12/lib/debug.c:26:
jni/gnutls-3.0.12/lib/gnutls_errors.h:26:24: error: gnutls_int.h: No such file or directory
jni/gnutls-3.0.12/lib/gnutls_errors.h:27:27: error: gnutls_global.h: No such file or directory
In file included from jni/gnutls-3.0.12/lib/debug.c:26:
jni/gnutls-3.0.12/lib/gnutls_errors.h:51: error: expected ')' before 'const'
jni/gnutls-3.0.12/lib/gnutls_errors.h:58: error: expected declaration specifiers or '...' before 'bigint_t'
In file included from jni/gnutls-3.0.12/lib/debug.c:29:
jni/gnutls-3.0.12/lib/debug.h:24: error: expected ')' before 'handshake'
jni/gnutls-3.0.12/lib/debug.h:25: error: expected declaration specifiers or '...' before 'bigint_t'
jni/gnutls-3.0.12/lib/debug.c:67: error: expected ')' before 'handshake'
make: *** [obj/local/armeabi/objs/ndk_demo/gnutls-3.0.12/lib/debug.o] Error 1

How do i include files like u64.h into the Android.mk so that it won’t throw a No such file or directory error? Or am i going about this the wrong way?

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1 Answer

  1. Editorial Team

    If you want to specify several c files, the syntax is like this:

    LOCAL_SRC_FILES := \
    my_c_file1.c \
    my_c_file1.c \
    my_c_file2.c \
    my_last_c_file.c

    Add the path to your header files into the make file with this directive:

    LOCAL_C_INCLUDES := \
    /my_path1_to_h_files/ \
    /my_path2_to_h_files/ \
    /my_pathN_to_h_files/

    And if your module uses some shared libraries to link then you can add this:

    LOCAL_SHARED_LIBRARIES := \
    lib1 \
    lib2 \
    lib3
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