apt fails to build from source with Linaro toolchain

[Michael Hope]

Seen with 4.4.4-6ubuntu5~ppa2 while building apt 0.7.25.3ubuntu9. The failure is suspicious and may be a fault in apt.

http://launchpadlibrarian.net/51555634/buildlog_ubuntu-maverick-armel.apt_0.7.25.3ubuntu9_FAILEDTOBUILD.txt.gz

deb/dpkgpm.cc: In member function 'bool pkgDPkgPM::OpenLog()':
deb/dpkgpm.cc:597: error: 'chmod' was not declared in this scope
deb/dpkgpm.cc:609: error: 'chmod' was not declared in this scope
deb/dpkgpm.cc: In member function 'virtual bool pkgDPkgPM::Go(int)':
deb/dpkgpm.cc:1143: warning: format not a string literal and no format arguments
deb/dpkgpm.cc:832: warning: ignoring return value of 'int pipe(int*)', declared with attribute warn_unused_result
deb/dpkgpm.cc:985: warning: ignoring return value of 'ssize_t write(int, const void*, size_t)', declared with attribute warn_unused_result
deb/dpkgpm.cc: In member function 'void pkgDPkgPM::WriteApportReport(const char*, const char*)':
deb/dpkgpm.cc:1259: error: no matching function for call to 'stat::stat(const char*, stat*)'
//usr/include/bits/stat.h:40: note: candidates are: stat::stat()
//usr/include/bits/stat.h:40: note: stat::stat(const stat&)
deb/dpkgpm.cc:1287: error: 'chmod' was not declared in this scope
deb/dpkgpm.cc:1289: error: 'chmod' was not declared in this scope
make[2]: *** [../build/obj/apt-pkg/dpkgpm.opic] Error 1

[Loïc Minier (lool)]

This is not a toolchain bug, nor an armel specific bug:
http://udd.debian.org/cgi-bin/ubuntu_ftbfs.cgi
lists this failure on i386 and amd64, it's a missing include in apt, and the toolchain just got pickier

[Yao Qi (yao-codesourcery)]

http://udd.debian.org/cgi-bin/ubuntu_ftbfs.cgi shows that this error also happens on i386/amd64. It is not a linaro-gcc specific bug.