From 08bdbcd9f3a3553b810b8bd758e4a022f52c3ae3 Mon Sep 17 00:00:00 2001
From: Artur Sharafutdinov <artur.sharafutdinov@meshinspector.com>
Date: Tue, 1 Sep 2026 16:33:42 +0200
Subject: [PATCH 1/4] CI: Introduce a separate dependency list for Ubuntu
 packages

Ubuntu 26.04 has a kind of a issue: installing build-essential and
libopenmpi-dev (an indirect dependency of libocct-data-exchange-dev)
results in installing two versions of libstdc++, 15 and 16, which
in turn causes building errors. The most simple solution (explicit
installation of gfortran-15) can be applied to CI but is not suitable
for end users. This change overcomes the libopenmpi-dev installation
by replacing some development packages with runtime ones for end-user
.deb packages.
---
 requirements/ubuntu-package.txt | 30 ++++++++++++++++++++++++++++++
 scripts/distribution.sh         |  2 +-
 2 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 requirements/ubuntu-package.txt

diff --git a/requirements/ubuntu-package.txt b/requirements/ubuntu-package.txt
new file mode 100644
index 000000000000..ef27cbd09b14
--- /dev/null
+++ b/requirements/ubuntu-package.txt
@@ -0,0 +1,30 @@
+build-essential
+cmake
+libblosc1
+libboost-dev
+libboost-locale-dev
+libboost-program-options-dev
+libcurl4
+libeigen3-dev
+libexpected-dev
+libfmt-dev
+libfreetype6
+libgdcm3.0
+libglfw3-dev
+libgtk-3-0
+libhidapi-dev
+libhpdf-2.3.0
+libjsoncpp-dev
+libocct-data-exchange-7.5 | libocct-data-exchange-7.6 | libocct-data-exchange-7.9
+libpython3-dev
+libspdlog-dev
+libssl3
+libtbb-dev
+libtiff5 | libtiff6
+libtinyxml2-9 | libtinyxml2-10 | libtinyxml2-11
+libturbojpeg | libturbojpeg0
+libzip4 | libzip5
+libzstd1
+occt-misc
+pkg-config
+python3-venv
diff --git a/scripts/distribution.sh b/scripts/distribution.sh
index ebd7755a9f03..24dff57f48e4 100755
--- a/scripts/distribution.sh
+++ b/scripts/distribution.sh
@@ -54,7 +54,7 @@ fi
 echo ${MR_VERSION} > distr/meshlib-dev${MR_INSTALL_RES_DIR}/mr.version
 
 BASE_DIR=$(realpath $(dirname "$0")/..)
-REQUIREMENTS_FILE="${BASE_DIR}/requirements/ubuntu.txt"
+REQUIREMENTS_FILE="${BASE_DIR}/requirements/ubuntu-package.txt"
 # convert multi-line file to comma-separated string
 DEPENDS_LINE=$(cat ${REQUIREMENTS_FILE} | tr '\n' ',' | sed -e "s/,\s*$//" -e "s/,/, /g")
 

From 7361520ad9f7f68f55827ad1a1fe000aeb690071 Mon Sep 17 00:00:00 2001
From: Artur Sharafutdinov <artur.sharafutdinov@meshinspector.com>
Date: Tue, 1 Sep 2026 17:19:26 +0200
Subject: [PATCH 2/4] Fix package list

---
 requirements/ubuntu-package.txt | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/requirements/ubuntu-package.txt b/requirements/ubuntu-package.txt
index ef27cbd09b14..a8e30fef1614 100644
--- a/requirements/ubuntu-package.txt
+++ b/requirements/ubuntu-package.txt
@@ -1,9 +1,14 @@
 build-essential
 cmake
 libblosc1
+libboost-atomic-dev
+libboost-chrono-dev
 libboost-dev
+libboost-iostreams-dev
 libboost-locale-dev
 libboost-program-options-dev
+libboost-system-dev
+libboost-thread-dev
 libcurl4
 libeigen3-dev
 libexpected-dev
@@ -11,11 +16,13 @@ libfmt-dev
 libfreetype6
 libgdcm3.0
 libglfw3-dev
+libglib2.0-0
 libgtk-3-0
 libhidapi-dev
 libhpdf-2.3.0
 libjsoncpp-dev
 libocct-data-exchange-7.5 | libocct-data-exchange-7.6 | libocct-data-exchange-7.9
+libpng16-16
 libpython3-dev
 libspdlog-dev
 libssl3
@@ -23,8 +30,9 @@ libtbb-dev
 libtiff5 | libtiff6
 libtinyxml2-9 | libtinyxml2-10 | libtinyxml2-11
 libturbojpeg | libturbojpeg0
+libxcb1
 libzip4 | libzip5
-libzstd1
 occt-misc
 pkg-config
 python3-venv
+zlib1g

From 9366c5e4ba9792eb662c0210075c0826c4bf08c2 Mon Sep 17 00:00:00 2001
From: Artur Sharafutdinov <artur.sharafutdinov@meshinspector.com>
Date: Tue, 1 Sep 2026 18:05:04 +0200
Subject: [PATCH 3/4] Fix package list

---
 requirements/ubuntu-package.txt | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/requirements/ubuntu-package.txt b/requirements/ubuntu-package.txt
index a8e30fef1614..6759d42371e7 100644
--- a/requirements/ubuntu-package.txt
+++ b/requirements/ubuntu-package.txt
@@ -1,6 +1,6 @@
 build-essential
 cmake
-libblosc1
+libblosc-dev
 libboost-atomic-dev
 libboost-chrono-dev
 libboost-dev
@@ -13,7 +13,7 @@ libcurl4
 libeigen3-dev
 libexpected-dev
 libfmt-dev
-libfreetype6
+libfreetype-dev
 libgdcm3.0
 libglfw3-dev
 libglib2.0-0
@@ -35,4 +35,4 @@ libzip4 | libzip5
 occt-misc
 pkg-config
 python3-venv
-zlib1g
+zlib1g-dev

From 52e88f5dfb2160ec2ce6483a73a3336fb4f5a059 Mon Sep 17 00:00:00 2001
From: Artur Sharafutdinov <artur.sharafutdinov@meshinspector.com>
Date: Tue, 1 Sep 2026 18:43:37 +0200
Subject: [PATCH 4/4] Trigger rebuild