这里有一个简单的hello world sha1哈希器,它使用openssl库。
#include <openssl/sha.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
system("printf '%s' 'hello world' | sha1sum");
unsigned char digest[SHA_DIGEST_LENGTH];
char digest_pr[(SHA_DIGEST_LENGTH)*2+1];
SHA_CTX ctx;
if(!SHA1_Init(&ctx)) return 1;
#define STR_STRLEN(A) A, (sizeof(A)/sizeof(*(A))-1)
if(!SHA1_Update(&ctx,STR_STRLEN("hello"))) return EXIT_FAILURE;
if(!SHA1_Update(&ctx,STR_STRLEN(" world"))) return EXIT_FAILURE;
if(!SHA1_Final(digest,&ctx)) return EXIT_FAILURE;
#define DIGITS "0123456789abcdef"
for(size_t i=0;i<sizeof(digest);i++){
digest_pr[i*2+0]=DIGITS[digest[i]/16];
digest_pr[i*2+1]=DIGITS[digest[i]%16];
}
digest_pr[(SHA_DIGEST_LENGTH)*2]='\0';
puts(digest_pr);
}
在安装了libssl dev的Mint/Ubuntu上,我可以编译并链接它
$CC sha.c
(CC是gcc、tcc或clang中的一个)然后成功地运行它,但是这不适用于musl,所以我获取了openssl源代码(
git clone https://github.com/openssl/openssl
),配置为
./config --prefix=/usr/local/musl
,构建并安装它,现在
musl-gcc sha.c -lcrypto works
但是跑步
LD_LIBRARY_PATH=/usr/local/musl/lib a.out
让我明白:
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __fprintf_chk: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: makecontext: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: setcontext: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __register_atfork: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __memcpy_chk: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __strcat_chk: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: secure_getenv: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __vfprintf_chk: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __syslog_chk: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __memset_chk: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __fread_chk: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: getcontext: symbol not found
Error relocating /usr/local/musl/lib/libcrypto.so.1.1: __sprintf_chk: symbol not found
是什么引起的?我该怎么解决?
