remove post-installations script from khiops packages

Java configuration is in khiops-env in the package khiops-core. It is not updated by khiops package anymore.
The trick is that this configuration is triggered by the presence of khiops.jar

On the docker files, We pin the jdk version to the smallest one on each distro (it matches most of the time the default-jdk package)
The idea is to build norm.jar with the oldest jdk to have a jar compatible with all jre. Ideally we should build with jdk 1.8 on all
distros but this package is not available everywhere.

cherry pick from dev PR #245

CMakeLists.txt

@@ -81,15 +81,15 @@ if(IS_FEDORA_LIKE)
   else()
     message(
       FATAL_ERROR
-        "MPI_BIN is not defined, you have to load the mpi module (e.g. source /etc/profile.d/modules.sh && module load mpi/mpich-x86_64)"
+        "MPI_BIN is not defined, you have to load the mpi module e.g.:\n source /etc/profile.d/modules.sh && module load mpi/mpich-x86_64"
     )
   endif(DEFINED ENV{MPI_BIN})
   if(DEFINED ENV{MPI_SUFFIX})
     set(MPI_SUFFIX $ENV{MPI_SUFFIX})
   else()
     message(
       FATAL_ERROR
-        "MPI_SUFFIX is not defined, you have to load the mpi module (e.g. source /etc/profile.d/modules.sh && module load mpi/mpich-x86_64)"
+        "MPI_SUFFIX is not defined, you have to load the mpi module e.g.:\n source /etc/profile.d/modules.sh && module load mpi/mpich-x86_64"
     )
   endif(DEFINED ENV{MPI_SUFFIX})
 endif(IS_FEDORA_LIKE)

packaging/dockerfiles/Dockerfile.debian10

@@ -10,7 +10,7 @@ RUN true \
   build-essential \
   coreutils \
   debhelper \
-  default-jdk \
+  openjdk-11-jdk \
   devscripts \
   fakeroot \
   libmpich-dev \

packaging/dockerfiles/Dockerfile.debian11

@@ -10,7 +10,7 @@ RUN true \
   build-essential \
   coreutils \
   debhelper \
-  default-jdk \
+  openjdk-11-jdk \
   devscripts \
   fakeroot \
   libmpich-dev \

packaging/dockerfiles/Dockerfile.debian12

@@ -11,7 +11,7 @@ RUN true \
   cmake \
   coreutils \
   debhelper \
-  default-jdk \
+  openjdk-17-jdk\
   devscripts \
   fakeroot \
   libmpich-dev \

packaging/dockerfiles/Dockerfile.rocky8

@@ -11,7 +11,7 @@ RUN true \
   && dnf install -y \
   cmake \
   gcc-c++ \
-  java-17-openjdk-devel \
+  java-1.8.0-openjdk-devel \
   mpich-devel \
   openmpi \
   openmpi-devel \

packaging/dockerfiles/Dockerfile.rocky9

@@ -10,7 +10,7 @@ RUN true \
   && dnf upgrade -y \
   && dnf install -y \
   gcc-c++ \
-  java-17-openjdk-devel \
+  java-1.8.0-openjdk-devel \
   mpich-devel \
   openmpi \
   openmpi-devel \
@@ -25,4 +25,4 @@ RUN true \
   && sh cmake-3.26.5-linux-x86_64.sh --prefix=/usr/local/ --exclude-subdir \
   && rm -f cmake-3.26.5-linux-x86_64.sh \
   && dnf remove -y "dnf-command(config-manager)"\
-  && true
+  && true

packaging/dockerfiles/Dockerfile.ubuntu18.04

@@ -11,7 +11,7 @@ RUN true \
   cmake \
   coreutils \
   debhelper \
-  default-jdk \
+  openjdk-8-jdk \
   devscripts \
   fakeroot \
   libmpich-dev \

packaging/dockerfiles/Dockerfile.ubuntu20.04

@@ -11,7 +11,7 @@ RUN true \
   cmake \
   coreutils \
   debhelper \
-  default-jdk \
+  openjdk-8-jdk \
   devscripts \
   fakeroot \
   libmpich-dev \

packaging/dockerfiles/Dockerfile.ubuntu22.04

@@ -11,7 +11,7 @@ RUN true \
   cmake \
   coreutils \
   debhelper \
-  default-jdk \
+  openjdk-8-jdk \
   devscripts \
   fakeroot \
   libmpich-dev \

packaging/linux/common/khiops-env.in

@@ -58,13 +58,21 @@ then
     fi
 fi
 
-# Java configuration
-# JAVA_HOME automatic setting
-
-# Set java environment for GUI if Khiops GUI is installed
-if [[ -f "/usr/share/khiops/khiops.jar" && -n "$JAVA_HOME" ]]; then
-   KHIOPS_CLASSPATH=/usr/share/khiops/norm.jar:/usr/share/khiops/khiops.jar
-   KHIOPS_JAVA_PATH=$(find -L "$JAVA_HOME" -name libjvm.so | xargs dirname)
+# Set java environment if Khiops GUI is installed
+if [ -f "/usr/share/khiops/khiops.jar" ]; then
+    if [ -z "$JAVA_HOME" ] && [ -f /usr/bin/java ]; then 
+        JAVA_HOME=$(readlink -f /usr/bin/java | sed "s:bin/java::" )
+    fi
+    if [ ! -d "$JAVA_HOME" ]; then
+        echo "The JAVA_HOME directory doesn't exist (${JAVA_HOME})."
+        unset JAVA_HOME
+    fi
+    if [ -n "$JAVA_HOME" ]; then
+        KHIOPS_JAVA_PATH=$(find -L "$JAVA_HOME" -name libjvm.so | xargs dirname)
+        KHIOPS_CLASSPATH=/usr/share/khiops/norm.jar:/usr/share/khiops/khiops.jar
+    else
+        echo "Java not found. Khiops cannot launch a graphical interface. Please install a Java Runtime Environment (>= 1.8)." 
+    fi
 fi
 
 # Number of processes in use (must be set according to the physical cores number)

packaging/packaging.cmake

@@ -122,8 +122,6 @@ set(CPACK_DEBIAN_KHIOPS_CORE_PACKAGE_RECOMMENDS "khiops, khiops-visualization")
 set(CPACK_DEBIAN_KHIOPS_KNI_RECOMMENDS kni-doc)
 
 # packages posinst and triggers
-
-set(CPACK_DEBIAN_KHIOPS_PACKAGE_CONTROL_EXTRA "${PROJECT_SOURCE_DIR}/packaging/linux/debian/khiops/postinst")
 set(CPACK_DEBIAN_KHIOPS_CORE_PACKAGE_CONTROL_EXTRA "${TMP_DIR}/postinst")
 set(CPACK_DEBIAN_KNI_PACKAGE_CONTROL_EXTRA "${PROJECT_SOURCE_DIR}/packaging/linux/debian/kni/triggers")
 
@@ -166,8 +164,6 @@ set(CPACK_RPM_KHIOPS_PACKAGE_REQUIRES "java >= 1.8")
 set(CPACK_RPM_KHIOPS_CORE_PACKAGE_REQUIRES "util-linux")
 
 # packages post/postun install scripts
-
-set(CPACK_RPM_KHIOPS_POST_INSTALL_SCRIPT_FILE "${PROJECT_SOURCE_DIR}/packaging/linux/redhat/khiops.post")
 set(CPACK_RPM_KNI_POST_INSTALL_SCRIPT_FILE "${PROJECT_SOURCE_DIR}/packaging/linux/redhat/kni.post")
 set(CPACK_RPM_KNI_POSTUN_INSTALL_SCRIPT_FILE "${PROJECT_SOURCE_DIR}/packaging/linux/redhat/kni.postun")