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ilogbl: Fix compilation error with xlclang on AIX 7.2
From: |
Bruno Haible |
Subject: |
ilogbl: Fix compilation error with xlclang on AIX 7.2 |
Date: |
Wed, 06 Jan 2021 12:02:15 +0100 |
User-agent: |
KMail/5.1.3 (Linux/4.4.0-197-generic; KDE/5.18.0; x86_64; ; ) |
On AIX 7.2 with xlclang in 64-bit mode I see this compilation error:
xlclang -q64 -qthreaded -qtls -std=gnu11 -DHAVE_CONFIG_H -I. -I../../gllib -I..
-DGNULIB_STRICT_CHECKING=1 -I/home/haible/prefix64/include -D_THREAD_SAFE -g
-O2 -MT math.o -MD -MP -MF .deps/math.Tpo -c -o math.o ../../gllib/math.c
In file included from ../../gllib/math.c:3:
./math.h:1832:19: error: function cannot return function type 'int (long
double)'
_GL_FUNCDECL_SYS (ilogbl, int, (long double x));
^
1 error generated.
The reason is that in this situation, 'ilogbl' is defined as a macro.
This patch fixes it.
2021-01-06 Bruno Haible <bruno@clisp.org>
ilogbl: Fix compilation error with xlclang on AIX 7.2.
* lib/math.in.h (ilogbl): Undefine macro before declaration.
diff --git a/lib/math.in.h b/lib/math.in.h
index 6208a01..335505d 100644
--- a/lib/math.in.h
+++ b/lib/math.in.h
@@ -1322,6 +1322,7 @@ _GL_FUNCDECL_RPL (ilogbl, int, (long double x));
_GL_CXXALIAS_RPL (ilogbl, int, (long double x));
# else
# if !@HAVE_ILOGBL@
+# undef ilogbl
_GL_FUNCDECL_SYS (ilogbl, int, (long double x));
# endif
_GL_CXXALIAS_SYS (ilogbl, int, (long double x));
@@ -2102,7 +2103,7 @@ _GL_FUNCDECL_RPL (sinf, float, (float x));
_GL_CXXALIAS_RPL (sinf, float, (float x));
# else
# if !@HAVE_SINF@
- # undef sinf
+# undef sinf
_GL_FUNCDECL_SYS (sinf, float, (float x));
# endif
_GL_CXXALIAS_SYS (sinf, float, (float x));
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