build: add GCC 10 version detection

Lets add GCC 10 detection to the build system as distributions like Fedora 32 have started shipping with it.
Some tools like mtd-utils need work to compile under GCC10, but that will be next step.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
(cherry picked from commit 835d1c68a0f036c8b0d837a48b5a05fdfb2e8218)

diff --git a/include/prereq-build.mk b/include/prereq-build.mk
index 03f6d31d9c672622cb69cb8732d550434072866e..fe62a2bbf54330c67c8a5cf7706b9c301d27d6a2 100644 (file)
--- a/include/prereq-build.mk
+++ b/include/prereq-build.mk
@@ -28,8 +28,8 @@ $(eval $(call TestHostCommand,proper-umask, \
 
 $(eval $(call SetupHostCommand,gcc, \
        Please install the GNU C Compiler (gcc) 4.8 or later, \
-       $(CC) -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?)', \
-       gcc -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?)', \
+       $(CC) -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
+       gcc -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
        gcc48 --version | grep gcc, \
        gcc49 --version | grep gcc, \
        gcc5 --version | grep gcc, \
@@ -37,6 +37,7 @@ $(eval $(call SetupHostCommand,gcc, \
        gcc7 --version | grep gcc, \
        gcc8 --version | grep gcc, \
        gcc9 --version | grep gcc, \
+       gcc10 --version | grep gcc, \
        gcc --version | grep -E 'Apple.(LLVM|clang)' ))
 
 $(eval $(call TestHostCommand,working-gcc, \
@@ -47,8 +48,8 @@ $(eval $(call TestHostCommand,working-gcc, \
 
 $(eval $(call SetupHostCommand,g++, \
        Please install the GNU C++ Compiler (g++) 4.8 or later, \
-       $(CXX) -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?)', \
-       g++ -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?)', \
+       $(CXX) -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
+       g++ -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
        g++48 --version | grep g++, \
        g++49 --version | grep g++, \
        g++5 --version | grep g++, \
@@ -56,6 +57,7 @@ $(eval $(call SetupHostCommand,g++, \
        g++7 --version | grep g++, \
        g++8 --version | grep g++, \
        g++9 --version | grep g++, \
+       g++10 --version | grep g++, \
        g++ --version | grep -E 'Apple.(LLVM|clang)' ))
 
 $(eval $(call TestHostCommand,working-g++, \