This is a doc issue at most, but worth noting because it may confuse some users.

Apps that use stb_image.h inside a shared library fail with Ubuntu 16.04 beta 2 (with gcc-5.3).
Symptom is the main executable fails to link to that shared library, with error
/usr/bin/ld: a.out: hidden symbol `__cpu_model' in /usr/lib/gcc/x86_64-linux-gnu/5/libgcc.a(cpuinfo.o) is referenced by DSO

A workaround is to link the shared library with -lgcc_s -lgcc.

To reproduce:

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bug.sh
::::::::::::::

!/bin/sh

echo Demonstrate gotcha in __builtin_cpu_supports on Ubuntu 16.04 and rawhide / f24
echo See https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/ZM2L65WIZEEQHHLFERZYD5FAG7QY2OGB/
echo Maybe caused by https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61309

echo Linking with gcc works:
gcc -fPIC -shared buglib.c -lm -o buglib.so
gcc bugapp.c buglib.so

echo Linking with g++ fails:
g++ -fPIC -shared buglib.c -lm -o buglib.so
g++ bugapp.c buglib.so

echo Rescue by linking libgcc explicitly into shared library:
g++ -fPIC -shared buglib.c -lm -lgcc_s -lgcc -o buglib.so
g++ bugapp.c buglib.so

::::::::::::::
buglib.c
::::::::::::::

define STB_IMAGE_IMPLEMENTATION

include "stb_image.h"

::::::::::::::
bugapp.c
::::::::::::::

include <stdio.h>

include "stb_image.h"

int main(int argc, char **argv) {
int width, height, n;
stbi_load("foo.jpg", &width, &height, &n, 4);
}