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Listing all build-time dependencies
If you carefully read a build output, you can discover lines which mention `sed` command:
+ /usr/bin/make -O -j4 V=1 VERBOSE=1
rm -f lib/arg-nonnull.h-t lib/arg-nonnull.h && \
sed -n -e '/GL_ARG_NONNULL/,$p' \
Therefore you need to add this line close to other BuildRequires lines:
BuildRequires: sed
Similarly, studying `configure` script in the unpackaged sources, which is executed by `%configure` macro, reveals it's a `/bin/sh` script:
$ head configure
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.69 for GNU Hello 2.10.
Thus you also should record this dependency on `bash`:
BuildRequires: bash
Why on `bash`? Because `/bin/sh` program is provided by `bash` package:
$ rpm --queryformat '%{name}\n' --query --file /bin/sh
bash
Specifying all used dependencies helps to make the `.spec` file resilient against changes in the build environment. If e.g. `sed` package were removed from the environment, this GNU Hello package would fail to build.
Listing all build options
The GNU Hello build script, `configure` has many build options which enable or disable optional features. Their nondefault forms can be listed with `--help` option:
$ ./configure --help
`configure' configures GNU Hello 2.10 to adapt to many kinds of systems.
Usage: ./configure [OPTION]... [VAR=VALUE]...
⋮
Optional Features:
--disable-option-checking ignore unrecognized --enable/--with options
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--enable-silent-rules less verbose build output (undo: "make V=1")
--disable-silent-rules verbose build output (undo: "make V=0")
--enable-dependency-tracking
do not reject slow dependency extractors
--disable-dependency-tracking
speeds up one-time build
--disable-nls do not use Native Language Support
--disable-rpath do not hardcode runtime library paths
Some of them are already specified within `%configure` and `%make_build` macros. The rest of the options, if they are important for the built package, should be explicitly written in the `.spec` file to prevent from their sudden and unnoticed changes. Either because a new Hello version changes the default, or because a package which they depend on appears of disappears from the build environment.
Therefore modify `%configure` invocation in `%build` section like this:
%configure --enable-nls --disable-rpath
Checking the result with rpmlint
Check with `fedpkg lint` reveals a problem:
$ fedpkg --release f{MAJOROSVER} lint
hello.x86_64: W: file-not-utf8 /usr/share/doc/hello/THANKS
In order to ensure a pure utf-8 installation, the file needs to be converted in `%prep`. This can be done with the `iconv` utility which is provided by `glibc-common` package, and `mv` tool from `coreutils`:
BuildRequires: coreutils
BuildRequires: glibc-common
⋮
%prep
⋮
mv THANKS THANKS.old
iconv --from-code=ISO-8859-1 --to-code=UTF-8 --output=THANKS THANKS.old
Run `fedpkg lint` again and observe that the warning is fixed.
A Complete hello.spec File
Here is the final version of `hello.spec`:
Name: hello
Version: 2.10
Release: %autorelease
Summary: Produces a familiar, friendly greeting
License: GPL-3.0-or-later
URL: https://ftp.gnu.org/gnu/%{name}
Source: https://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.gz
BuildRequires: bash
BuildRequires: coreutils
BuildRequires: gcc
BuildRequires: gettext
BuildRequires: glibc-common
BuildRequires: make
BuildRequires: sed
BuildRequires: texinfo
%prep
%autosetup
mv THANKS THANKS.old
iconv --from-code=ISO-8859-1 --to-code=UTF-8 --output=THANKS THANKS.old

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Usage: ./configure [OPTION]... [VAR=VALUE]...
⋮
Optional Features:
--disable-option-checking ignore unrecognized --enable/--with options
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--enable-silent-rules less verbose build output (undo: "make V=1")
--disable-silent-rules verbose build output (undo: "make V=0")
--enable-dependency-tracking
do not reject slow dependency extractors
--disable-dependency-tracking
speeds up one-time build
--disable-nls do not use Native Language Support
--disable-rpath do not hardcode runtime library paths
Usage: ./configure [OPTION]... [VAR=VALUE]...
⋮
Optional Features:
--disable-option-checking ignore unrecognized --enable/--with options
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--enable-silent-rules less verbose build output (undo: "make V=1")
--disable-silent-rules verbose build output (undo: "make V=0")
--enable-dependency-tracking
do not reject slow dependency extractors
--disable-dependency-tracking
speeds up one-time build
--disable-nls do not use Native Language Support
--disable-rpath do not hardcode runtime library paths
6 months ago
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Source string description
type: delimited block -
Flags
no-wrap, placeholders:r"`[\w\d -_<>(){}\[\]@$;.\*+=]*`":r"(link:)?https?://[\w\d\-_#?&%=\./@]*":r"xref:[\w\d\-_/]*\.adoc(#[\w\d\-_/]*)?", read-only
Source string location
./pages/Packaging_Tutorial_2_GNU_Hello.adoc:290
String age
6 months ago
Last updated
5 months ago
Source string age
6 months ago
Translation file
pot/master/pages/Packaging_Tutorial_2_GNU_Hello.pot, string 65