sudo ./configure
--> Shows me like
sudo ./configure
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking whether make sets $(MAKE)... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for cpp... cpp
checking for ld... ld
checking whether gcc -m32 works... no
configure: error: Cannot build a 32-bit program, you need to install 32-bit development libraries.
-->sudo ./configure --enable-win64 [For 64-bit platform]
sudo ./configure --enable-win64
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking whether make sets $(MAKE)... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for cpp... cpp
checking for ld... ld
checking whether gcc supports __builtin_ms_va_list... yes
checking for the directory containing the Wine tools...
checking for flex... no
configure: error: no suitable flex found. Please install the 'flex' package.
sudo make && sudo make install
make: *** No targets specified and no makefile found. Stop.