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Sep 25, 2018 Attempting to build from master fails on OSX mojave. Actual behaviour make CMAKEBUILDTYPE=Release build output In file included from unibilium.c:22:./unibilium.h:25:10: fatal error: 'stdio.h' file not found #include h ^. Sep 03, 2013 The naming convention of a library package must be prefix with lib follow by the name of the library and the file must end with.a. Therefore a typical library should be named as libmymath.a. However, you can ignore the prefix and the extension when using Xcode. In this case, the library name mymath is alright. Then select the file.

Now that you have the basic pieces in place, it is time to build your application. This section covers some of the more common issues that you may encounter in bringing your UNIX application to OS X. These issues apply largely without regard to what type of development you are doing.

Using GNU Autoconf, Automake, and Autoheader

If you are bringing a preexisting command-line utility to OS X that uses GNU autoconf, automake, or autoheader, you will probably find that it configures itself without modification (though the resulting configuration may be insufficient). Just run configure and make as you would on any other UNIX-based system.

If running the configure script fails because it doesn’t understand the architecture, try replacing the project’s config.sub and config.guess files with those available in /usr/share/automake-1.6. If you are distributing applications that use autoconf, you should include an up-to-date version of config.sub and config.guess so that OS X users don’t have to do anything extra to build your project.

If that still fails, you may need to run /usr/bin/autoconf on your project to rebuild the configure script before it works. OS X includes autoconf in the BSD tools package. Beyond these basics, if the project does not build, you may need to modify your makefile using some of the tips provided in the following sections. After you do that, more extensive refactoring may be required.

Some programs may use autoconf macros that are not supported by the version of autoconf that shipped with OS X. Because autoconf changes periodically, you may actually need to get a new version of autoconf if you need to build the very latest sources for some projects. In general, most projects include a prebuilt configure script with releases, so this is usually not necessary unless you are building an open source project using sources obtained from CVS or from a daily source snapshot.

However, if you find it necessary to upgrade autoconf, you can get a current version from http://www.gnu.org/software/autoconf/. Note that autoconf, by default, installs in /usr/local/, so you may need to modify your PATH environment variable to use the newly updated version. Do not attempt to replace the version installed in /usr/.

For additional information about using the GNU autotoolset, see http://autotoolset.sourceforge.net/tutorial.html and the manual pages autoconf, automake, and autoheader.

Compiling for Multiple CPU Architectures

Because the Macintosh platform includes more than one processor family, it is often important to compile software for multiple processor architectures. For example, libraries should generally be compiled as universal binaries even if you are exclusively targeting an Intel-based Macintosh computer, as your library may be used by a PowerPC binary running under Rosetta. For executables, if you plan to distribute compiled versions, you should generally create universal binaries for convenience.

When compiling programs for architectures other than your default host architecture, such as compiling for a ppc64 or Intel-based Macintosh target on a PowerPC-based build host, there are a few common problems that you may run into. Most of these problems result from one of the following mistakes:

Assuming that the build host is architecturally similar to the target architecture and will thus be capable of executing intermediate build products
Trying to determine target-processor-specific information at configuration time (by compiling and executing small code snippets) rather than at compile time (using macro tests) or execution time (for example, by using conditional byte swap functions)

Whenever cross-compiling occurs, extra care must be taken to ensure that the target architecture is detected correctly. This is particularly an issue when generating a binary containing object code for more than one architecture.

In many cases, binaries containing object code for more than one architecture can be generated simply by running the normal configuration script, then overriding the architecture flags at compile time.

For example, you might run

followed by

to generate a universal binary (for Intel-based and PowerPC-based Macintosh computers). To generate a 4-way universal binary that includes 64-bit versions, you would add -arch ppc64 and -arch x86_64 to the CFLAGS and LDFLAGS.

Note: If you are using an older version of gcc and your makefile passes LDFLAGS to gcc instead of passing them directly to ld, you may need to specify the linker flags as -Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk. This tells the compiler to pass the unknown flags to the linker without interpreting them. Do not pass the LDFLAGS in this form to ld, however; ld does not currently support the -Wl syntax.

If you need to support an older version of gcc and your makefile passes LDFLAGS to both gcc and ld, you may need to modify it to pass this argument in different forms, depending on which tool is being used. Fortunately, these cases are rare; most makefiles either pass LDFLAGS to gcc or ld, but not both. Newer versions of gcc support -syslibroot directly.

If your makefile does not explicitly pass the contents of LDFLAGS to gcc or ld, they may still be passed to one or the other by a make rule. If you are using the standard built-in make rules, the contents of LDFLAGS are passed directly to ld. If in doubt, assume that it is passed to ld. If you get an invalid flag error, you guessed incorrectly.

If your makefile uses gcc to run the linker instead of invoking it directly, you must specify a list of target architectures to link when working with universal binary object (.o) files even if you are not using all of the architectures of the object file. If you don't, you will not create a universal binary, and you may also get a linker error. For more information about 64-bit executables, see 64-Bit Transition Guide.

However, applications that make configuration-time decisions about the size of data structures will generally fail to build correctly in such an environment (since those sizes may need to be different depending on whether the compiler is executing a ppc pass, a ppc64 pass, or an i386 pass). When this happens, the tool must be configured and compiled for each architecture as separate executables, then glued together manually using lipo.

In rare cases, software not written with cross-compilation in mind will make configure-time decisions by executing code on the build host. In these cases, you will have to manually alter either the configuration scripts or the resulting headers to be appropriate for the actual target architecture (rather than the build architecture). In some cases, this can be solved by telling the configure script that you are cross-compiling using the --host, --build, and --target flags. However, this may simply result in defaults for the target platform being inserted, which doesn’t really solve the problem.

The best fix is to replace configure-time detection of endianness, data type sizes, an

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