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e1a4a8eb
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2018-06-25T11:58:34
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cmake: enforce C90 standard
While the aim of libgit2 was to conform to C90 code, we never instructed
the compiler to enforce C90 compliance. Thus, quite a few violations
were able to get into our code base, which have been removed with the
previous commits. As we are now able to build libgit2 with C90 enforced,
we can set the C_STANDARD property for our own build targets.
Note that we explicitly avoid setting the C standard for our third-party
dependencies. At least the zlib target does not build with C90 enforced,
and we do not want to fix them by deviating from upstream. Thus we
simply enforce no standard for them.
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c13e56f9
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2018-06-25T14:12:53
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cmake: distinguish internal and system include directories
While we want to enforce strict C90 mode, this may cause issues with
system provided header files which are themselves not strictly
conforming. E.g. if a system header has C++ style comments, a compiler
in strict C90 mode would produce an error and abort the build. As the
user most likely doesn't want to change the system header, this would
completely break the build on such systems. One example of this is
mbedtls, which provides such header files.
The problem can be worked around by distinguishing between
system-provided and project-provided include directories. When adding
include directories via "-isystem" instead of "-I", the compiler will
skip certain checks and print out less warnings. To use system includes,
we can simply add the "SYSTEM" flag to CMake's `INCLUDE_DIRECTORIES` and
`TARGET_INCLUDE_DIRECTORIES` functions. Note that we have to split the
include directories into two variables because of this, as we definitely
still want to check for all warnings produced by our own header files.
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8ab470f5
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2018-04-27T15:31:43
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cmake: remove now-useless LIBGIT2_LIBDIRS handling
With the recent change of always resolving pkg-config libraries to their
full path, we do not have to manage the LIBGIT2_LIBDIRS variable
anymore. The only other remaining user of LIBGIT2_LIBDIRS is winhttp,
which is a CMake-style library target and can thus be resolved by CMake
automatically.
Remove the variable to simplify our build system a bit.
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b6720018
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2018-01-17T02:25:36
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examples: Switch to the nifty argv helpers from common
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8e31cc25
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2017-06-28T12:51:14
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cmake: keep track of libraries and includes via lists
Later on, we will move detection of required libraries, library
directories as well as include directories into a separate
CMakeLists.txt file inside of the source directory. Obviously, we want
to avoid duplication here regarding these parameters.
To prepare for the split, put the parameters into three variables
LIBGIT2_LIBS, LIBGIT2_LIBDIRS and LIBGIT2_INCLUDES, tracking the
required libraries, linking directory as well as include directories.
These variables can later be exported into the parent scope from inside
of the source build instructions, making them readily available for the
other subdirectories.
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b43f35fd
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2014-03-03T14:59:50
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- examples CMakeLists.txt reverted to previous state
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6874cafd
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2014-03-03T12:08:17
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cmake examples change so that general.c is off by default
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66902d47
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2013-10-29T18:30:49
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Extract common example helpers and reorg examples
This reorganizes a few of the examples so that the main function
comes first with the argument parsing extracted into a helper
that can come at the end of the file (so the example focuses more
on the use of libgit2 instead of command line support). This also
creates a shared examples/common.[ch] so that useful helper funcs
can be shared across examples instead of repeated.
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60ee53df
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2013-09-03T15:14:04
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Split examples CMakeLists.txt
Also, this converts the examples/CMakeLists.txt from explicitly
listing to just globbing for all the individual C files.
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