Identifying which Linux system library contains a function

Question

I am using a dev system where I have to specify the lib name when accessing a function inside it.

I\'ve used functions like open() before, and somehow found out that

Answer 1

When I cross-compile Windows applications on Linux, if I have an issue with linking I tend to use this script that I named mingw-findin. A similar script could be used for regular Linux compilation, just instead of using the mingw alternative, use regular nm and instead of looking in the cross-compile prefixed directory, look in /usr/lib. To use this script, I run

./mingw-findin NameOfFunction

Here's the code:

#!/bin/sh
liblist=` ls /usr/x86_64-w64-mingw32/lib `

for i in $liblist
do

if x86_64-w64-mingw32-nm /usr/x86_64-w64-mingw32/lib/$i | grep -q $1; then
        echo $i
        x86_64-w64-mingw32-nm /usr/x86_64-w64-mingw32/lib/$i | grep $1
fi

done