Spec: Update gcc-c++ dependency for C++23

Switch project standard from C++20 to C++23, requiring newer GCC.
Updated spec file to reflect correct gcc-c++ version.

Author: Pavel Siska

pkg/rpm/ipfixprobe-msec.spec.in

@@ -16,17 +16,12 @@ Conflicts:     ipfixprobe-nemea, ipfixprobe
 Source0:       %{name}-%{version}.tar.gz
 
 BuildRoot:     %{_tmppath}/%{name}-%{version}-%{release}
-%if 0%{?rhel} == 8
+%if 0%{?rhel} < 10
 BuildRequires: gcc-toolset-14
 BuildRequires: gcc-toolset-14-gcc
 BuildRequires: gcc-toolset-14-gcc-c++
 %endif
 
-%if 0%{?rhel} >= 9
-BuildRequires: gcc >= 10
-BuildRequires: gcc-c++ >= 10
-%endif
-
 BuildRequires: make
 BuildRequires: cmake >= 3.12
 BuildRequires: libunwind-devel
@@ -57,7 +52,7 @@ Export timestamp in milliseconds.
 %autosetup
 
 %build
-%if 0%{?rhel} == 8
+%if 0%{?rhel} < 10
 source /opt/rh/gcc-toolset-14/enable
 %endif
 %cmake -DCMAKE_BUILD_TYPE=Release -DENABLE_MILLISECONDS_TIMESTAMP=ON

pkg/rpm/ipfixprobe-nemea.spec.in

@@ -19,17 +19,12 @@ Conflicts:     ipfixprobe, ipfixprobe-msec, ipfixprobe-process-experimental
 Source0:       %{name}-%{version}.tar.gz
 
 BuildRoot:     %{_tmppath}/%{name}-%{version}-%{release}
-%if 0%{?rhel} == 8
+%if 0%{?rhel} < 10
 BuildRequires: gcc-toolset-14
 BuildRequires: gcc-toolset-14-gcc
 BuildRequires: gcc-toolset-14-gcc-c++
 %endif
 
-%if 0%{?rhel} >= 9
-BuildRequires: gcc >= 10
-BuildRequires: gcc-c++ >= 10
-%endif
-
 BuildRequires: make
 BuildRequires: cmake >= 3.12
 BuildRequires: libunwind-devel
@@ -80,7 +75,7 @@ Experimental process plugins.
 %autosetup
 
 %build
-%if 0%{?rhel} == 8
+%if 0%{?rhel} < 10
 source /opt/rh/gcc-toolset-14/enable
 %endif
 %cmake -DCMAKE_BUILD_TYPE=Release -DENABLE_NEMEA=ON %{?with_output_unirec: -DENABLE_OUTPUT_UNIREC=ON} %{?with_process_experimental: -DENABLE_PROCESS_EXPERIMENTAL=ON}

pkg/rpm/ipfixprobe.spec.in

@@ -21,17 +21,12 @@ Conflicts:     ipfixprobe-nemea, ipfixprobe-msec
 Source0:       %{name}-%{version}.tar.gz
 
 BuildRoot:     %{_tmppath}/%{name}-%{version}-%{release}
-%if 0%{?rhel} == 8
+%if 0%{?rhel} < 10
 BuildRequires: gcc-toolset-14
 BuildRequires: gcc-toolset-14-gcc
 BuildRequires: gcc-toolset-14-gcc-c++
 %endif
 
-%if 0%{?rhel} >= 9
-BuildRequires: gcc >= 10
-BuildRequires: gcc-c++ >= 10
-%endif
-
 BuildRequires: make
 BuildRequires: cmake >= 3.12
 BuildRequires: libunwind-devel
@@ -101,7 +96,7 @@ Experimental process plugins.
 %autosetup
 
 %build
-%if 0%{?rhel} == 8
+%if 0%{?rhel} < 10
 source /opt/rh/gcc-toolset-14/enable
 %endif
 %cmake -DCMAKE_BUILD_TYPE=Release %{?with_input_pcap:-DENABLE_INPUT_PCAP=ON} %{?with_input_dpdk:-DENABLE_INPUT_DPDK=ON} %{?with_input_nfb:-DENABLE_INPUT_NFB=ON} %{?with_process_experimental: -DENABLE_PROCESS_EXPERIMENTAL=ON}