Compiling pgBackRest 2.35 on Red Hat 8 is slightly different, than compiling pgBackRest 2.34 on Red Hat 8. The main difference is that pgBackRest 2.35 requires now the libyaml-devel package as a pre-requisite before the software can be compiled. For more information about the pre-requisites take a look at the following page https://pgbackrest.org/user-guide-rhel.html#build
Without the libyaml-devel you will run into the following error:
$ cd pgbackrest/pgbackrest-release-2.35/src/ $ ./configure 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 gcc option to accept ISO C99... none needed checking build system type... x86_64-pc-linux-gnu checking host system type... x86_64-pc-linux-gnu checking whether C compiler accepts -Wno-clobbered... yes checking for pg_config... yes checking for PQconnectdb in -lpq... yes checking how to run the C preprocessor... gcc -E checking for grep that handles long lines and -e... /usr/bin/grep checking for egrep... /usr/bin/grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking libpq-fe.h usability... yes checking libpq-fe.h presence... yes checking for libpq-fe.h... yes checking for EVP_get_digestbyname in -lcrypto... yes checking for SSL_new in -lssl... yes checking for pkg-config... yes checking for xmlSaveToBuffer in -lxml2... yes checking libxml/parser.h usability... yes checking libxml/parser.h presence... yes checking for libxml/parser.h... yes checking for yaml_parser_initialize in -lyaml... no configure: error: library 'yaml' is required
Now you might think, ok that’s easy, I simply run “sudo dnf install libyaml-devel” and you are ready to go.
I thought the same, however, starting with Red Hat 8, the libyaml-devel is not part of the standard repositories streams which are:
$ sudo dnf repolist Updating Subscription Management repositories. repo id repo name rhel-8-for-x86_64-appstream-rpms Red Hat Enterprise Linux 8 for x86_64 - AppStream (RPMs) rhel-8-for-x86_64-baseos-rpms Red Hat Enterprise Linux 8 for x86_64 - BaseOS (RPMs) rhel-8-for-x86_64-supplementary-rpms Red Hat Enterprise Linux 8 for x86_64 - Supplementary (RPMs)
For installing the libyaml-devel on Red Hat 8, you need the CodeReady repository.
If you want to know how to add the CodeReady repository, please take a look at the following Red Hat articles.
Chapter 3. The CodeReady Linux Builder repository
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/package_manifest/index#CodeReadyLinuxBuilder-repository
How to enable and make use of content within CodeReady Linux Builder
https://access.redhat.com/articles/4348511
After you did it, your repository list looks like the following:
$ sudo dnf repolist Updating Subscription Management repositories. repo id repo name codeready-builder-for-rhel-8-x86_64-rpms Red Hat CodeReady Linux Builder for RHEL 8 x86_64 (RPMs) rhel-8-for-x86_64-appstream-rpms Red Hat Enterprise Linux 8 for x86_64 - AppStream (RPMs) rhel-8-for-x86_64-baseos-rpms Red Hat Enterprise Linux 8 for x86_64 - BaseOS (RPMs) rhel-8-for-x86_64-supplementary-rpms Red Hat Enterprise Linux 8 for x86_64 - Supplementary (RPMs)
Now you can easily install the missing package.
$ sudo dnf install libyaml-devel ... ... $ rpm -qa | grep libyaml-devel libyaml-devel-0.1.7-5.el8.x86_64
And compile the pgBackRest software.
$ cd pgbackrest/pgbackrest-release-2.35/src/ $ ./configure 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 gcc option to accept ISO C99... none needed checking build system type... x86_64-pc-linux-gnu checking host system type... x86_64-pc-linux-gnu checking whether C compiler accepts -Wno-clobbered... yes checking for pg_config... yes checking for PQconnectdb in -lpq... yes checking how to run the C preprocessor... gcc -E checking for grep that handles long lines and -e... /usr/bin/grep checking for egrep... /usr/bin/grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking libpq-fe.h usability... yes checking libpq-fe.h presence... yes checking for libpq-fe.h... yes checking for EVP_get_digestbyname in -lcrypto... yes checking for SSL_new in -lssl... yes checking for pkg-config... yes checking for xmlSaveToBuffer in -lxml2... yes checking libxml/parser.h usability... yes checking libxml/parser.h presence... yes checking for libxml/parser.h... yes checking for yaml_parser_initialize in -lyaml... yes <= This is working now checking zlib.h usability... yes checking zlib.h presence... yes checking for zlib.h... yes checking for deflate in -lz... yes checking for zlib.h... (cached) yes checking for BZ2_bzCompress in -lbz2... yes checking bzlib.h usability... yes checking bzlib.h presence... yes checking for bzlib.h... yes checking for LZ4F_isError in -llz4... yes checking lz4frame.h usability... yes checking lz4frame.h presence... yes checking for lz4frame.h... yes checking for ZSTD_isError in -lzstd... yes checking zstd.h usability... yes checking zstd.h presence... yes checking for zstd.h... yes configure: creating ./config.status config.status: creating Makefile config.status: creating build.auto.h
Conclusion
I don’t know why Red Hat moved some packages to the CodeReady repository and make it more complicated for installing the libyaml-devel package. The good thing is that the libyaml-devel package needs only to be installed on the Build System.