Hi,
while building a gcc crosscompiler for ARMv7-a (32bit
TARGET="arm-linux-gnueabihf")
on a x86_64 linux host, I get the following error that says that
PATH_MAX isn't defined while compiling the file
gcc-source/libsanitizer/asan/asan_linux.cc, see below.
In that file <limits.h> is included, but PATH_MAX is defined in <linux/limits.h>.
This error happens in the very last step of the build process
( cd gcc-build ; make -j5 all ; make install ; cd .. )
I used glibc (not newlib).
All sources are the latest versions, ie. from git etc.
How to fix this bug?
Is the processing of this AddressSanitizer file (asan_linux.cc) optional?
Thx
########
...
libtool: compile: /data/sw/src/cross/my_cross_build/gcc-build/./gcc/xgcc
-shared-libgcc -B/data/sw/src/cross/my_cross_build/gcc-build/./gcc -nostdinc++
-L/data/sw/src/cross/my_cross_build/gcc-build/arm-linu
x-gnueabihf/libstdc++-v3/src
-L/data/sw/src/cross/my_cross_build/gcc-build/arm-linux-gnueabihf/libstdc++-v3/src/.libs
-L/data/sw/src/cross/my_cross_build/gcc-build/arm-linux-gnueabihf/libstdc++-v3/libsupc++/
.libs -B/sw/src/cross/INSTALL_DIR/arm-linux-gnueabihf/bin/
-B/sw/src/cross/INSTALL_DIR/arm-linux-gnueabihf/lib/ -isystem
/sw/src/cross/INSTALL_DIR/arm-linux-gnueabihf/include -isystem
/sw/src/cross/INSTALL_D
IR/arm-linux-gnueabihf/sys-include -D_GNU_SOURCE -D_DEBUG
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
-DASAN_HAS_EXCEPTIONS=1 -DASAN_NEEDS_SEGV=1 -DCAN_SANITIZE_UB=0 -I. -I../../../
../gcc-source/libsanitizer/asan -I.. -I
../../../../gcc-source/libsanitizer/include -I
../../../../gcc-source/libsanitizer -Wall -W -Wno-unused-parameter
-Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-b
uiltin -fno-exceptions -fno-rtti -fomit-frame-pointer -funwind-tables
-fvisibility=hidden -Wno-variadic-macros -fno-ipa-icf
-I../../libstdc++-v3/include -I../../libstdc++-v3/include/arm-linux-gnueabihf
-I../
../../../gcc-source/libsanitizer/../libstdc++-v3/libsupc++ -std=gnu++11 -g -O2
-D_GNU_SOURCE -MT asan_mac.lo -MD -MP -MF .deps/asan_mac.Tpo -c
../../../../gcc-source/libsanitizer/asan/asan_mac.cc -o asan_mac
.o >/dev/null 2>&1
../../../../gcc-source/libsanitizer/asan/asan_linux.cc: In function 'void
__asan::AsanCheckIncompatibleRT()':
../../../../gcc-source/libsanitizer/asan/asan_linux.cc:216:21: error:
'PATH_MAX' was not declared in this scope
216 | char filename[PATH_MAX];
| ^~~~~~~~
../../../../gcc-source/libsanitizer/asan/asan_linux.cc:217:35: error:
'filename' was not declared in this scope; did you mean 'fileno'?
217 | MemoryMappedSegment segment(filename, sizeof(filename));
| ^~~~~~~~
| fileno
Makefile:599: recipe for target 'asan_linux.lo' failed
make[4]: *** [asan_linux.lo] Error 1
######
zz@cs5:/data/sw/src/cross/my_cross_build$ find
../INSTALL_DIR/arm-linux-gnueabihf/ -iname "limit*" -ls
12900673 4 -rw-r--r-- 1 zz zz 937 Mar 27 20:08
../INSTALL_DIR/arm-linux-gnueabihf/include/linux/limits.h
12241315 8 -rw-r--r-- 1 zz zz 5412 Mar 27 20:35
../INSTALL_DIR/arm-linux-gnueabihf/include/limits.h
zz@cs5:/data/sw/src/cross/my_cross_build$ grep "PATH_MAX"
../INSTALL_DIR/arm-linux-gnueabihf/include/limits.h
zz@cs5:/data/sw/src/cross/my_cross_build$ grep "PATH_MAX"
../INSTALL_DIR/arm-linux-gnueabihf/include/linux/limits.h
#define PATH_MAX 4096 /* # chars in a path name including nul */
#######
