make check//unix/-fPIE/-pie RUNTESTFLAGS=solib-display.exp gcc -fpic -c -fPIE -pie -o x.o x.c /usr/lib/gcc/x86_64-redhat-linux/4.6.1/../../../../lib64/Scrt1.o: In function `_start': (.text+0x20): undefined reference to `main' => Change the order for overrides. One has to also use -fPIC rather than -fPIE, -fPIC is stronger. The correct way would be: make check//unix RUNTESTFLAGS='CC_FOR_TARGET=gcc\ -fPIC\ -pie CXX_FOR_TARGET=g++\ -fPIC\ -pie solib-display.exp' But there is a problem with testsuite.unix non-unique subdir name and also a problem with make -j parallelization of the testsuite. --- gdb-7.3.50.20110722/gdb/testsuite/lib/future.exp 2011-10-11 16:44:05.000000000 +0200 +++ gdb-7.3.50.20110722/gdb/testsuite/lib/future.exp2 2011-10-11 16:44:10.000000000 +0200 @@ -77,6 +77,10 @@ proc gdb_default_target_compile {source set ldflags "" set dest [target_info name] + if {[board_info $dest exists multilib_flags]} { + append add_flags " [board_info $dest multilib_flags]" + } + if {[info exists CFLAGS_FOR_TARGET]} { append add_flags " $CFLAGS_FOR_TARGET" } @@ -333,10 +337,6 @@ proc gdb_default_target_compile {source } } - if {[board_info $dest exists multilib_flags]} { - append add_flags " [board_info $dest multilib_flags]" - } - verbose "doing compile" set sources ""