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Update documentation on building double-precision externals

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IOhannes m zmölnig 2023-07-06 10:19:22 +02:00
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@ -34,15 +34,6 @@ for a given platform to get the whole toolchain):
Cross toolchains for OSX/MacOS are not generally distributed. Project Cross toolchains for OSX/MacOS are not generally distributed. Project
`osxcross` from Thomas Poechtraeger can create them for Linux. `osxcross` from Thomas Poechtraeger can create them for Linux.
## Building double-precision externals
At the time of writing (2018-02) there is no official Pd that supports
double-precision numbers yet.
However, if you do get hold of an experimental double-precision Pd, you can
easily build your externals for 64-bit numbers:
make CPPFLAGS="-DPD_FLOATSIZE=64"
## Universal binaries on macOS ## Universal binaries on macOS
The compiler, by default, builds for the native architecture of the build The compiler, by default, builds for the native architecture of the build
@ -70,6 +61,26 @@ tools/Xcode combination the build system has. For example, any newer macOS
10.15+ will support both x86_64 (Intel 64-bit) and arm64 (Apple Silicon) while 10.15+ will support both x86_64 (Intel 64-bit) and arm64 (Apple Silicon) while
OSX 10.6 - macOS 10.14 can build for x86_64 and i386 (Intel 32-bit). OSX 10.6 - macOS 10.14 can build for x86_64 and i386 (Intel 32-bit).
## Building double-precision externals
At the time of writing (2023-07-06) there is no official Pd that supports
double-precision numbers yet.
However, if you do get hold of an experimental double-precision Pd, you can
easily build your externals for 64-bit numbers, by passing `floatsize=64`
as an argument to `make`.
Starting with Pd>=0.54, double precision externals use different extensions
from traditional (single-precision) externals.
The extension consists of the OS ("linux", "darwin", "windows"), the CPU
architecture ("amd64" (x86_64), "i386" (x86), "arm64",...) and the floatsize
in bits ("64" for double-precision), followed by the system's native extension
for dynamic libraries (".dll" on Windows, ".so" on macOS/Linux/un*xes).
As of pd-lib-builder==0.7.0, you have to manually pass this extension:
make floatsize=64 extension=windows-amd64-64.so
make floatsize=64 extension=linux-arm64-64.so
make floatsize=64 extension=darwin-fat-64.so arch="x86_64 arm64"
# Project management # Project management
In general it is advised to put the `Makefile.pdlibbuilder` into a separate In general it is advised to put the `Makefile.pdlibbuilder` into a separate