++ gcc@gcc.gnu.org
> -----Original Message----- > From: Wasim Khan > Sent: 15 April 2025 12:41 > To: gcc-h...@gcc.gnu.org > Subject: GCOV issue with GCC-14.2 > > Hi, > > I am using GCOV for test coverage in a project using instructions for > freestanding environment > > Below are the flags i use. > > CFLAGS += -fprofile-arcs -ftest-coverage -fprofile-info-section LFLAGS += > -lgcov > --coverage > > With these flags, thigs works fine with toolchain version 12.3 but i am facing > below error if i upgrade to toolchain version 14.2 (AArch32 bare-metal > target). > > /opt/arm-gnu-toolchain-14.2.rel1-x86_64-arm-none-eabi/bin/../lib/gcc/arm- > none-eabi/14.2.1/../../../../arm-none-eabi/bin/ld: /opt//arm-gnu-toolchain- > 14.2.rel1-x86_64-arm-none-eabi/bin/../lib/gcc/arm-none- > eabi/14.2.1/thumb/v8-m.main+fp/softfp/libgcov.a(_gcov.o): in function > `gcov_read_bytes': > libgcov-driver.c:(.text.gcov_read_bytes+0x10): undefined reference to `fread' > > > > I found that if i pass '-lgcov --coverage' before '-lc' in linking, then my > problem is > fixed. > > + LFLAGS += -lgcov --coverage > LFLAGS += -lc > - LFLAGS += -lgcov --coverage > > Need help to understand why such changes/library order is are not required for > toolchain version 12.3 ? > > > Regards, > Wasim
