implicit declaration of function ‘str[n]casecmp’ [-Werror=implicit-function-declaration]
11,104
Solution 1
These functions are declared in strings.h
, not string.h
.
Solution 2
include the header strings.h instead of string.h..
Author by
Homunculus Reticulli
Updated on June 04, 2022Comments
-
Homunculus Reticulli about 2 years
I am compiling a C library, using C99. I am including string.h to my translation unit (and I can navigate to the definitions of the str?casecmp functions in my netbeans IDE.
The source looks something like this:
#include <string.h> int foo(char* c1, char* c2) { return strcasecmp(c1, c2); } int foobar(char* c1, char* c2, int n) { return strncasecmp(c1, c2, n); }
However, when I attempt to compile, I get the error shown in the title.
I am using gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5).
This is what my gcc command looks like:
gcc -c -g -Werror -DE4C_THREADSAFE -DLINUX_BUILD -I../include -I../genutils -std=c99 -fPIC -MMD -MP -MF build/Debug/GNU-Linux-x86/btypes.o.d -o build/Debug/GNU-Linux-x86/btypes.o btypes.c
What is causing this, and how do I fix it?