freecad: fix musl build (patch usage of execinfo)

Closes: #13615 [via git-merge-pr]
Signed-off-by: Jürgen Buchmüller <pullmoll@t-online.de>

srcpkgs/freecad/patches/002-execinfo.patch

@@ -0,0 +1,30 @@
+--- src/App/Application.cpp
++++ src/App/Application.cpp
+@@ -1063,7 +1063,9 @@
+ #endif
+ 
+ #if defined(FC_OS_LINUX)
++#ifdef __GLIBC__
+ #include <execinfo.h>
++#endif
+ #include <dlfcn.h>
+ #include <cxxabi.h>
+ 
+@@ -1075,6 +1077,7 @@
+ // This function produces a stack backtrace with demangled function & method names.
+ void printBacktrace(size_t skip=0)
+ {
++#ifdef __GLIBC__
+     void *callstack[128];
+     size_t nMaxFrames = sizeof(callstack) / sizeof(callstack[0]);
+     size_t nFrames = backtrace(callstack, nMaxFrames);
+@@ -1105,6 +1108,9 @@
+     }
+ 
+     free(symbols);
++#else
++    std::cerr << "sorry, no backtrace on musl libc";
++#endif
+ }
+ #endif
+ 

srcpkgs/freecad/patches/010-salomesmesh-execinfo.patch

@@ -0,0 +1,30 @@
+--- src/3rdParty/salomesmesh/src/DriverSTL/Basics_Utils.cpp
++++ src/3rdParty/salomesmesh/src/DriverSTL/Basics_Utils.cpp
+@@ -29,7 +29,9 @@
+ #ifndef WIN32
+ #include <unistd.h>
+ #include <sys/stat.h>
++#ifdef __GLIBC__
+ #include <execinfo.h>
++#endif
+ #endif
+ 
+ 
+@@ -109,6 +111,7 @@
+ #ifndef WIN32
+   void print_traceback()
+   {
++#ifdef __GLIBC__
+     void *array[50];
+     size_t size;
+     char **strings;
+@@ -123,6 +126,9 @@
+       }
+ 
+     free (strings);
++#else     
++   std::cerr << "sorry, no backtrace on musl libc";
++#endif
+   }
+ #else
+   #if (_MSC_VER >= 1400) // Visual Studio 2005

srcpkgs/freecad/template

@@ -5,7 +5,7 @@
 #  - python3: freecad code not yet ready for it, probably at 0.18
 pkgname=freecad
 version=0.17
-revision=1
+revision=2
 wrksrc="FreeCAD-${version}"
 build_style=cmake
 
@@ -34,10 +34,6 @@ homepage="https://freecadweb.org/"
 distfiles="https://github.com/FreeCAD/FreeCAD/archive/${version}.tar.gz"
 checksum=ae017393476b6dc7f1192bcaf91ceedc2f9b791f2495307ce7c45efadb5266fb
 
-case "$XBPS_TARGET_MACHINE" in
-	*-musl) broken="https://build.voidlinux.eu/builders/x86_64-musl_builder/builds/9439/steps/shell_3/logs/stdio";;
-esac
-
 post_install() {
 	# AppHomePath is computed with binary's realpath:
 	# do not move binaries but symlink them instead.