why source build bigger library?

[QUAN-Zhao]

I modified DOBBY_GENERATE_SHARED to OFF to build static libraries, the result is much bigger...

(base) quanzhao@quanzhao-MS-7C37:~/git-space/Dobby$ find build -type f -name libdobby.a | while read file; do ll $file; done
-rw-r--r-- 1 quanzhao quanzhao 1185284 11月 17 18:55 build/android/x86_64/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 1450746 11月 17 18:55 build/android/arm64-v8a/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 905162 11月 17 18:55 build/android/x86/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 1022746 11月 17 18:55 build/android/armeabi/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 1026734 11月 17 18:55 build/android/armeabi-v7a/libdobby.a

while the downloaded libraries are much smaller:

-rw-r--r-- 1 quanzhao quanzhao 324824 6月  16 19:23 ../3rd-party/dobby/lib/android/x86_64/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 260076 6月  16 19:23 ../3rd-party/dobby/lib/android/x86/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 283322 6月  16 19:23 ../3rd-party/dobby/lib/android/armv7/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 366194 6月  16 19:23 ../3rd-party/dobby/lib/android/arm64/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 168720 6月  16 19:22 ../3rd-party/dobby/lib/darwin/x86_64/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 206984 6月  16 19:22 ../3rd-party/dobby/lib/darwin/arm64e/libdobby.a
-rw-r--r-- 1 quanzhao quanzhao 194504 6月  16 19:22 ../3rd-party/dobby/lib/darwin/arm64/libdobby.a

I wrote a script to build all arch I needed:

#!/bin/bash
CMAKE_DIR=$(cd $(dirname $0) && pwd)
source "${CMAKE_DIR}/common.sh"
for arch in "${archs[@]}"
do
    # Run CMake.
    cmake ${ANDROID_CMAKE_OPTS} \
        -S $CMAKE_DIR \
        -B $CMAKE_DIR/build/android/${arch} \
        -D ANDROID_ABI=${arch} \
        -D CMAKE_ANDROID_ARCH_ABI=${arch}
    cd "$CMAKE_DIR/build/android/${arch}" && make -j4
done

while the common.sh is:

#! /bin/bash
set -ue
CUR_DIR="$(cd "$(dirname "$0")";pwd)"
ANDROID_NDK_HOME=$(cd $(dirname $(which ndk-build)) && pwd)

declare -a archs=("armeabi" "armeabi-v7a" "arm64-v8a" "x86" "x86_64")
# declare -a archs=("arm64-v8a")

ANDROID_CMAKE_OPTS=""
ANDROID_CMAKE_OPTS+=" -D CMAKE_BUILD_TYPE=Release"
#ANDROID_CMAKE_OPTS+=" -D CMAKE_SYSTEM_NAME=Android"
ANDROID_CMAKE_OPTS+=" -D CMAKE_TOOLCHAIN_FILE=${ANDROID_NDK_HOME}/build/cmake/android.toolchain.cmake"
ANDROID_CMAKE_OPTS+=" -D ANDROID_NATIVE_API_LEVEL=15"
ANDROID_CMAKE_OPTS+=" -D ANDROID_NDK=${ANDROID_NDK_HOME}/ndk-build"
#ANDROID_CMAKE_OPTS+=" -D CMAKE_ANDROID_NDK=${ANDROID_NDK_HOME}/ndk-build"
#ANDROID_CMAKE_OPTS+=" -D CMAKE_SYSTEM_VERSION=16"
ANDROID_CMAKE_OPTS+=" -D ANDROID_TOOLCHAIN=clang"
#ANDROID_CMAKE_OPTS+=" -D ANDROID_STL=c++_shared"

I tried the noted script also but with the same result. How could I make a smaller static library?