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List:       openembedded-core
Subject:    Re: [OE-core] [PATCH v5] rpm: Allow setting platform macro settings externally
From:       "Alexandre Belloni via lists.openembedded.org" <alexandre.belloni=bootlin.com () li
Date:       2023-07-31 17:11:11
Message-ID: 2023073117111183e153dc () mail ! local
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Hello,

On 31/07/2023 10:21:38+0200, Zoltan Boszormenyi wrote:
> Feed platform settings to installplatform externally. Based on the patch
> submitted under https://github.com/rpm-software-management/rpm/pull/2585
> 
> Patch against INSTALL was backported for rpm 4.18.1
> 
> Signed-off-by: Zoltán Böszörményi <zboszor@gmail.com>
> ---
> ...atform-macro-settings-externally-258.patch | 118 ++++++++++++++++++
> meta/recipes-devtools/rpm/rpm_4.18.1.bb       |  20 +++
> 2 files changed, 138 insertions(+)
> create mode 100644 \
> meta/recipes-devtools/rpm/files/0001-Allow-setting-platform-macro-settings-externally-258.patch
>  
> diff --git a/meta/recipes-devtools/rpm/files/0001-Allow-setting-platform-macro-settings-externally-258.patch \
> b/meta/recipes-devtools/rpm/files/0001-Allow-setting-platform-macro-settings-externally-258.patch
>  new file mode 100644
> index 0000000000..f4c3630b8c
> --- /dev/null
> +++ b/meta/recipes-devtools/rpm/files/0001-Allow-setting-platform-macro-settings-externally-258.patch
>  @@ -0,0 +1,118 @@
> +From e58c607dcdb303ff3ba1b22fd23eb20e374b6ed3 Mon Sep 17 00:00:00 2001
> +From: =?UTF-8?q?Zoltán Böszörményi?> + <zboszor@gmail.com>
> +Date: Fri, 28 Jul 2023 12:16:56 +0200
> +Subject: [PATCH] Allow setting platform macro settings externally (#2585)
> +MIME-Version: 1.0
> +Content-Type: text/plain; charset=UTF-8
> +Content-Transfer-Encoding: 8bit
> +
> +* Allow setting platform macro settings externally
> +
> +By default, rpm installs a series of default platforms based on
> +the CPU architecture names in subdirectories called
> +
> +    /usr/lib/platform/<arch>-<os>
> +
> +This is enough for regular Linux distributions. However, some
> +distributions may use more specific platform names that refer to
> +particular computer systems, like SBCs or specific CPU tuning when
> +compiling.
> +
> +If the platform subdirectory does not exist in /usr/lib/platform
> +then rpmbuild does not work.
> +
> +Allow creating such custom platform subdirectory with feeding
> +the necessary data using external variables: RPM_CUSTOM_ARCH,
> +RPM_CUSTOM_ISANAME, RPM_CUSTOM_ISABITS, RPM_CUSTOM_CANONARCH
> +and RPM_CUSTOM_CANONCOLOR
> +
> +Signed-off-by: Zoltán Böszörményi <zboszor@gmail.com>
> +
> +---------
> +
> +Signed-off-by: Zoltán Böszörményi <zboszor@gmail.com>
> +Co-authored-by: Florian Festi <ffesti@redhat.com>

This is missing the Upstream-Status tag.

> +---
> + INSTALL         | 37 +++++++++++++++++++++++++++++++++++++
> + installplatform |  9 ++++++++-
> + 2 files changed, 45 insertions(+), 1 deletion(-)
> +
> +diff --git a/INSTALL b/INSTALL
> +index 13d0d8a83..5e035cf6a 100644
> +--- a/INSTALL
> ++++ b/INSTALL
> +@@ -148,6 +148,43 @@ and then install with:
> +
> +     make install
> +
> ++
> ++By default, rpm installs a series of default platforms based on the CPU
> ++architecture names in subdirectories called
> ++
> ++    /usr/lib/platform/<arch>-<os>
> ++
> ++This is enough for many distributions. However, some distributions
> ++may use more specific platform names that refer to particular computer
> ++systems, like SBCs or specific CPU tuning when compiling. Examples of such
> ++platform names are: "genericx86_64", "intel_skylake_64", "raspberrypi_armv7",
> ++"raspberrypi_armv8", etc.
> ++
> ++If the platform name is put into /etc/rpm/platform, then rpmbuild uses it
> ++and the only macros file rpmbuild looks for is
> ++
> ++    /usr/lib/platform/`cat /etc/rpm/platform`-<os>/macros
> ++
> ++If this file does not exist, many rpm macros will not have their expected
> ++values set and e.g. %configure will fail when trying to run rpmbuild.
> ++
> ++To allow creating the macros file for such a custom platform, the shell
> ++variables listed below must be set. If RPM_CUSTOM_ARCH is not set, the rest
> ++is ignored.
> ++
> ++    export RPM_CUSTOM_ARCH=genericx86_64
> ++    export RPM_CUSTOM_ISANAME=x86
> ++    export RPM_CUSTOM_ISABITSd
> ++    export RPM_CUSTOM_CANONARCH=x86_64
> ++    export RPM_CUSTOM_CANONCOLOR=0 # to use /usr/lib for %_libdir
> ++    export RPM_CUSTOM_CANONCOLOR=3 # to use /usr/lib64 for %_libdir
> ++
> ++    make install
> ++
> ++This also creates and installs the new platform file e.g.
> ++/usr/lib/platform/genericx86_64-linux/macros
> ++
> ++
> + Rpm comes with an automated self-test suite. The test-suite relies heavily
> + on fakechroot (https://github.com/dex4er/fakechroot/) and cannot be executed
> + without it. Provided that fakechroot was found during configure,
> +diff --git a/installplatform b/installplatform
> +index a5ad7c5b8..59f57697b 100755
> +--- a/installplatform
> ++++ b/installplatform
> +@@ -11,7 +11,7 @@ VENDOR="${4}"
> + OS="${5}"
> + RPMRC_GNU="${6}"
> +
> +-for ARCH in noarch `grep ^arch_canon $RPMRC | cut -d: -f2`; do
> ++for ARCH in noarch `grep ^arch_canon $RPMRC | cut -d: -f2` \
> ${RPM_CUSTOM_ARCH:+custom}; do +   RPMRC_OPTFLAGS="`sed -n 's/^optflags: '$ARCH' \
> //p' $RPMRC`" +   RPMRC_OPTFLAGS="`echo $RPMRC_OPTFLAGS | sed -e 's, ,\ ,g'`"
> +   case $RPMRC_OPTFLAGS in
> +@@ -30,6 +30,13 @@ for ARCH in noarch `grep ^arch_canon $RPMRC | cut -d: -f2`; do
> +   CANONCOLOR> +   FILTERĘt
> +   case "${ARCH}" in
> ++    custom)
> ++	ARCH=$RPM_CUSTOM_ARCH
> ++	ISANAME=$RPM_CUSTOM_ISANAME
> ++	ISABITS=$RPM_CUSTOM_ISABITS
> ++	CANONARCH=$RPM_CUSTOM_CANONARCH
> ++	CANONCOLOR=$RPM_CUSTOM_CANONCOLOR
> ++    ;;
> +     sparc64*)
> + 	ISANAME=sparc
> + 	ISABITSd
> +--
> +2.41.0
> +
> diff --git a/meta/recipes-devtools/rpm/rpm_4.18.1.bb \
> b/meta/recipes-devtools/rpm/rpm_4.18.1.bb index 95a9e92f96..0b8ebebb51 100644
> --- a/meta/recipes-devtools/rpm/rpm_4.18.1.bb
> +++ b/meta/recipes-devtools/rpm/rpm_4.18.1.bb
> @@ -40,6 +40,7 @@ SRC_URI = \
> "git://github.com/rpm-software-management/rpm;branch=rpm-4.18.x;protoc \
> file://0001-python-Use-Py_hash_t-instead-of-long-in-hdr_hash.patch \ \
> file://fix-declaration.patch \ \
> file://ea3187cfcf9cac87e5bc5e7db79b0338da9e355e.patch \ +           \
> file://0001-Allow-setting-platform-macro-settings-externally-258.patch \ "
> 
> PE = "1"
> @@ -128,10 +129,29 @@ do_install:append:class-nativesdk() {
> 	EOF
> }
> 
> +def rpm_isaname(d):
> +    import re
> +    arch = d.getVar('TARGET_ARCH')
> +    if re.match("^i.86$", arch) or re.match("^x86.*64$", arch):
> +        return "x86"
> +    # Add more platform tweaks for ISANAME as needed
> +    return arch
> +
> +# Add the custom BSP platform "macros" file
> +do_install:prepend:class-target() {
> +    export RPM_CUSTOM_ARCH="${MACHINE_ARCH}"
> +    export RPM_CUSTOM_ISANAME="${@rpm_isaname(d)}"
> +    export RPM_CUSTOM_ISABITS="${SITEINFO_BITS}"
> +    export RPM_CUSTOM_CANONARCH="${TARGET_ARCH}"
> +    # CANONCOLOR determines whether /usr/lib or /usr/lib64 is used for a 64-bit \
> platform +    export RPM_CUSTOM_CANONCOLOR="${@bb.utils.contains('DISTRO_FEATURES', \
> 'multilib', '3', '0', d)}" +}
> +
> # Rpm's make install creates var/tmp which clashes with base-files packaging
> do_install:append:class-target() {
> rm -rf ${D}/var
> }
> +
> do_install:append:class-nativesdk() {
> rm -rf ${D}${SDKPATHNATIVE}/var
> # Ensure find-debuginfo is located correctly inside SDK
> --
> 2.41.0
> 

> 
> 
> 


--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com



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