rpmbuild for auto-create buildroot

README.mkd

rpmbuild

Check how to build the rpm package from existing packages

$ tar -zcvf ~/wget.tar.gz /usr/bin/wget
$ rpm -bb wget.spec

I got message like below, my questions is why line mkdir /home/larry/rpmbuild/BUILDROOT/wget-1.12-1.x86_64 is executed automatically

Since in the redhat 6.4 docker container, the folder will not be created automatically

+ rpmbuild -bb wget.spec
Executing(%prep): /bin/sh -e /var/tmp/rpm-tmp.VNDZg4
+ umask 022
+ cd /home/larry/rpmbuild/BUILD
+ LANG=C
+ export LANG
+ unset DISPLAY
+ exit 0
Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.S8koPW
+ umask 022
+ cd /home/larry/rpmbuild/BUILD
+ '[' /home/larry/rpmbuild/BUILDROOT/wget-1.12-1.x86_64 '!=' / ']'
+ rm -rf /home/larry/rpmbuild/BUILDROOT/wget-1.12-1.x86_64
++ dirname /home/larry/rpmbuild/BUILDROOT/wget-1.12-1.x86_64
+ mkdir -p /home/larry/rpmbuild/BUILDROOT
+ mkdir /home/larry/rpmbuild/BUILDROOT/wget-1.12-1.x86_64
+ LANG=C
+ export LANG
+ unset DISPLAY
+ tar xf /home/larry/wget.tar.gz -C /home/larry/rpmbuild/BUILDROOT/wget-1.12-1.x86_64/
+ /usr/lib/rpm/check-buildroot
... (it is successful)

wget.spec

# This is a sample spec file for wget

%define name            wget
%define release         1
%define version         1.12

Summary:                GNU wget
License:                GPL
Name:                   %{name}
Version:                %{version}
Release:                %{release}
Group:                  Development/Tools

%description
The GNU wget program downloads files from the Internet using the command-line.

%prep

%install
tar xf ~/wget.tar.gz -C %{buildroot}/

%files
%defattr(-,root,root)
/usr/bin/wget