Fix build when HOST_CC is GCC 16

The default C++ standard in GCC 16 is C++20 (from C++17),
which introduced "requires" as a keyword. This caused the
build of libsolv (and libpackage) to break.

fs_shell now sets -std=c++11 as in bfs_shell. Both define
__STRICT_ANSI__ to avoid using certain headers, which now
causes conflicts related to __int128 when the standard is
not actually strict ANSI.

Change-Id: Ie142fb87eb79a20fe0c1b5f3fdd3b94899eaff48
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10980
Haiku-Format: Haiku-format Bot <[email protected]>
Reviewed-by: waddlesplash <[email protected]>

headers/config/HaikuVersion.h

@@ -55,7 +55,7 @@
 
 #if __GNUC__ == 2
 #	define B_HAIKU_ABI					B_HAIKU_ABI_GCC_2_HAIKU
-#elif (__GNUC__ >= 4 && __GNUC__ <= 15) || defined(__TINYC__)
+#elif (__GNUC__ >= 4 && __GNUC__ <= 16) || defined(__TINYC__)
 #	define B_HAIKU_ABI					B_HAIKU_ABI_GCC_4
 #else
 #	error Unsupported compiler!

src/build/libpackage/solver/Jamfile

@@ -4,6 +4,8 @@ UseHeaders [ FDirName $(HAIKU_TOP) src libs libsolv ] : true ;
 
 UsePrivateHeaders shared ;
 
+SubDirC++Flags -std=gnu++11 ;
+
 USES_BE_API on libpackage-add-on-libsolv_build.so = true ;
 
 SEARCH_SOURCE += [ FDirName $(HAIKU_TOP) src kits package solver ] ;

src/build/libsolv/Jamfile

@@ -37,7 +37,7 @@ switch $(HOST_PLATFORM) {
 SubDirCcFlags -Wno-sign-compare -Wno-missing-prototypes ;
 
 SubDirCcFlags $(HOST_PIC_CCFLAGS) ;
-SubDirC++Flags $(HOST_PIC_C++FLAGS) ;
+SubDirC++Flags $(HOST_PIC_C++FLAGS) -std=gnu++11 ;
 
 
 # libsolv

src/tools/fs_shell/Jamfile

@@ -16,6 +16,8 @@ DEFINES += FS_SHELL=1 ;
 # prevent inclusion of HaikuBuildCompatibility.h and _BSD_SOURCE headers
 DEFINES += HAIKU_BUILD_COMPATIBILITY_H __STRICT_ANSI__ ;
 
+SubDirC++Flags -std=c++11 ;
+
 # platform specific sources/libraries
 local fsShellCommandSources ;
 local externalCommandsSources ;