[openwrt/openwrt] prereq-build: g++ formatting and consistency fixes

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/81d0ddc806e1f088328ca29eb56db9285b2a4f7b

commit 81d0ddc806e1f088328ca29eb56db9285b2a4f7b
Author: Karl Palsson <karlp at tweak.net.au>
AuthorDate: Mon May 17 00:38:03 2021 +0000

    prereq-build: g++ formatting and consistency fixes
    
    Remove \n that mangles output, and fix inconsistent version name check.
    
    Example before:
    
    Build dependency: Please install the GNU C++ Compiler (g++) 6 or later
    Build dependency: \nPlease reinstall the GNU C++ Compiler (4.8 or later) - it appears to be broken
    Build dependency: Please install ncurses. (Missing libncurses.so or ncurses.h)
    
    Signed-off-by: Karl Palsson <karlp at tweak.net.au>
---
 include/prereq-build.mk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/prereq-build.mk b/include/prereq-build.mk
index 8adf0d03dd..639d1ad0fa 100644
--- a/include/prereq-build.mk
+++ b/include/prereq-build.mk
@@ -31,7 +31,7 @@ $(eval $(call SetupHostCommand,gcc, \
 	gcc --version | grep -E 'Apple.(LLVM|clang)' ))
 
 $(eval $(call TestHostCommand,working-gcc, \
-	\nPlease reinstall the GNU C Compiler (6 or later) - \
+	Please reinstall the GNU C Compiler (6 or later) - \
 	it appears to be broken, \
 	echo 'int main(int argc, char **argv) { return 0; }' | \
 		gcc -x c -o $(TMP_DIR)/a.out -))
@@ -43,7 +43,7 @@ $(eval $(call SetupHostCommand,g++, \
 	g++ --version | grep -E 'Apple.(LLVM|clang)' ))
 
 $(eval $(call TestHostCommand,working-g++, \
-	\nPlease reinstall the GNU C++ Compiler (4.8 or later) - \
+	Please reinstall the GNU C++ Compiler (6 or later) - \
 	it appears to be broken, \
 	echo 'int main(int argc, char **argv) { return 0; }' | \
 		g++ -x c++ -o $(TMP_DIR)/a.out - -lstdc++ && \