Commit Graph

9 Commits

Author SHA1 Message Date
Anas Nashif
fe958df4dd libc: rework libc selection and reduce Kconfigs
Moved all libc Kconfigs to where the code is and remove the default
Kconfig for selecting the minimal libc. Minimal libc is now the default
if nothing else is configured in.

Removed the options for extended libc, this obviously was restricting
features in the minimal libc without a good reason, most of the
functions are available directly when using newlib, so there is no
reason why we need to restrict those in minimal libc.

Jira: ZEP-1440
Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 22:31:28 +00:00
Sergio Rodriguez
6d5981bf28 lib: Adding the strstr() function
The strstr function finds the first occurrence of a substring
in another string, null terminated strings are not compared, this
function is added for compability for porting other libraries (like
mbedtls)

Jira: ZEP-327

Origin: http://www.leidinger.net/freebsd/dox/libkern/html/d3/d29/
strstr_8c_source.html

Change-Id: I52aac218ce0bd86373ec60f5afc49a92c85f6319
Signed-off-by: Sergio Rodriguez <sergio.sf.rodriguez@intel.com>
2016-07-19 22:35:21 +00:00
Benjamin Walsh
fc1c0c3345 libc/minimal: use per-thread errno implementation
Provides proper access to the per-thread errno variable, by using the
_get_errno() call.

Users can now do:

  errno = EINVAL;
  printk("errno: %d\n", errno);

Change-Id: I0ef365199656d002623b39b7f45f14f561501375
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-02-05 20:24:58 -05:00
Anas Nashif
f3f7eac765 Add MINIMAL_LIBC_EXTENDED to limit libc builds
This option adds optional libc functions that are not directly
used by the kernel but can be used for testing purposes.

This option is experimental.

Change-Id: Ia4dba718359c4f381047a5b52ebddb26d87ea75a
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-02-05 20:16:15 -05:00
Anas Nashif
751d90da85 libc: add support for strncasecmp function
Add function for comparing two strings ignoring case.

Change-Id: I2fc78c0a0d0f53e23566ffacd8dca3b23e386c26
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-02-05 20:16:15 -05:00
Dirk Brandewie
6bc71f5933 libc: added errno global variable
Change-Id: I42ae30fe5826828cc4696f155caeb186a31f913b
Signed-off-by: Fabien Chereau <fabien.chereau@intel.com>
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
2016-02-05 20:16:01 -05:00
Anas Nashif
8d00ec5c4e build: build libc as object, not kbuild library (lib.a)
The way we build the libc files is not a real library that can be
used as a libc and makes managing the source files a bit
difficult, so lets revert back to building the c function files
like everything else in the system to avoid any confusion.

Change-Id: I4e998e37bc376522fe253c4aefefe7804597f0f2
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-02-05 20:14:45 -05:00
Juan Manuel Cruz
de1cec29d6 Kbuild: Build minimal libc as a static library.
This commit changes the way libc is built.
Instead of building a hierarchy of objects linked into the
microkernel, libc minimal is built as a static library and
linked against the microkernel binary.
The location of the libc is configurable with the variable
KLIBC_DIR. This gives the flexibility to build against a
different libc other than minimal.

Change-Id: I9c0b6a684a9f3b407861aa387727c45eceb269c4
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
2016-02-05 20:14:08 -05:00
Juan Manuel Cruz
d31a6a6f31 Creation of Makefiles for libc minimal.
This commit adds the Makefiles to create object-bundle for
libc minimal.

Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
Change-Id: I9d15e0203664010ba4ef5cf3625b4075d7827ad7
2016-02-05 20:14:04 -05:00