libgcc12 @12.2.0 fails to configure - include mpc.h broken

[vallon (Justin)]

One of the configure checks for libgcc12 is failing. It is checking MPC version is >= 0.8.0, but instead has trouble compiling the check driver.

The build seems to be choking on a simple include of <mpc.h>.

$ port build libgcc12
/usr/bin/clang -arch x86_64 -c -pipe -Os -isysroot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.sdk -I/opt/local/include -I/opt/local/include -I/opt/local/include  -I/opt/local/include -isysroot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.sdk conftest.c
In file included from conftest.c:10:
/opt/local/include/mpc.h:287:35: error: unknown type name 'FILE'
__MPC_DECLSPEC void mpcr_out_str (FILE *f, mpcr_srcptr r);
                                  ^
1 error generated.
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define LT_OBJDIR ".libs/"
| /* end confdefs.h.  */
| #include <mpc.h>
| int
| main ()
| {
| 
|     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
|     choke me
|     #endif
| 
|   ;
|   return 0;
| }

Can be reproduced with just an include:

$ cat x.c
#include <mpc.h>
$ /usr/bin/clang -arch x86_64 -c -pipe -Os -isysroot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.sdk -I/opt/local/include x.c
In file included from x.c:1:
/opt/local/include/mpc.h:287:35: error: unknown type name 'FILE'
__MPC_DECLSPEC void mpcr_out_str (FILE *f, mpcr_srcptr r);
                                  ^

System: OS 13, xcodebuild -version "Xcode 14.1, Build version 14B47b"

[thaumkid (Jacob Hobbs)]

I had the same issue - to fix it, I had to modify /opt/local/include/mpc.h and after line 24, insert the line, "#include <stdio.h>".

Afterwards, port install libgcc12 was successful

[jmroot (Joshua Root)]

#66457