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glibc
Peter Saunderson edited this page Jul 26, 2016
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Home / parallella-yoctobuild / meta-exotic / Design Guide / Per Yocto Recipe Details / glibc
Uses:
Compiles with:
- arm-poky-linux-gnueabi-gcc --sysroot=...sysroots/parallella-hdmi-tcbootstrap
PROVIDES = "virtual/libc virtual/${TARGET_PREFIX}libc-for-gcc virtual/libintl virtual/libiconv"
DEPENDS = "virtual/${TARGET_PREFIX}gcc-initial libgcc-initial linux-libc-headers virtual/${TARGET_PREFIX}libc-initial"
STAGINGCC = "gcc-cross-initial-${TARGET_ARCH}"
STAGINGCC_class-nativesdk = "gcc-crosssdk-initial-${TARGET_ARCH}"
PATH_prepend = "${STAGING_BINDIR_TOOLCHAIN}.${STAGINGCC}:"
Files generated by glibc
File | Purpose |
---|---|
crt0.o | Older style of the initial runtime code. No one generates this anymore. |
crt1.o | Newer style of the initial runtime code. Contains the _start symbol which sets up the env with argc/argv/libc _init/libc _fini before jumping to the libc main. glibc calls this file 'start.S'. |
crti.o | Defines the function prolog; _init in the .init section and _fini in the .fini section. glibc calls this 'initfini.c'. |
crtn.o | Defines the function epilog. glibc calls this 'initfini.c'. |
Scrt1.o | Used in place of crt1.o when generating PIEs. |
gcrt1.o | Used in place of crt1.o when generating code with profiling information. Compile with -pg. Produces output suitable for the gprof util. |
Mcrt1.o | Like gcrt1.o, but is used with the prof utility. glibc installs this as a dummy file as it's useless on linux systems. |