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Check for most clang warnings in our headers in the test suite

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Make allheaders unit test also enable -Wall, -Wextra and -Wpedantic for
clang to detect any warnings it might give in wx headers.

Don't use -Weverything because there are just too many warnings we'd
need to disable then.
This commit is contained in:
Vadim Zeitlin
2021-12-15 02:15:36 +01:00
parent 6f8bc1018b
commit 9aaadab7d6
1 changed files with 31 additions and 5 deletions
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36
tests/allheaders.cpp
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@@ -18,7 +18,7 @@
#define CHECK_GCC_VERSION(major, minor) 0
#endif
#if CHECK_GCC_VERSION(4, 6)
#if CHECK_GCC_VERSION(4, 6) || defined(__clang__)
// As above, we can't reuse wxCONCAT() and wxSTRINGIZE macros from wx/cpp.h
// here, so define their equivalents here.
#define CONCAT_HELPER(x, y) x ## y
@@ -27,10 +27,18 @@
#define STRINGIZE_HELPER(x) #x
#define STRINGIZE(x) STRINGIZE_HELPER(x)
#define GCC_TURN_ON(warn) \
_Pragma(STRINGIZE(GCC diagnostic error STRINGIZE(CONCAT(-W,warn))))
#define GCC_TURN_OFF(warn) \
_Pragma(STRINGIZE(GCC diagnostic ignored STRINGIZE(CONCAT(-W,warn))))
#define WARNING_TURN_ON(comp, warn) \
_Pragma(STRINGIZE(comp diagnostic error STRINGIZE(CONCAT(-W,warn))))
#define WARNING_TURN_OFF(comp, warn) \
_Pragma(STRINGIZE(comp diagnostic ignored STRINGIZE(CONCAT(-W,warn))))
#if CHECK_GCC_VERSION(4, 6)
#define GCC_TURN_ON(warn) WARNING_TURN_ON(GCC, warn)
#define GCC_TURN_OFF(warn) WARNING_TURN_OFF(GCC, warn)
#elif defined(__clang__)
#define CLANG_TURN_ON(warn) WARNING_TURN_ON(clang, warn)
#define CLANG_TURN_OFF(warn) WARNING_TURN_OFF(clang, warn)
#endif
#endif
// We have to include this one first in order to check for wxUSE_XXX below.
@@ -374,6 +382,24 @@
GCC_TURN_OFF(padded)
#endif // gcc >= 4.6
// Do the same for clang too except here we don't bother with the individual
// warnings and just enable the usual ones because clang mostly includes all
// the useful warnings in them anyhow.
#ifdef CLANG_TURN_ON
CLANG_TURN_ON(all)
CLANG_TURN_ON(extra)
CLANG_TURN_ON(pedantic)
// We use long long, variadic macros and empty macro arguments (which are a
// C99 extension) even in C++98 builds.
#if __cplusplus < 201103L
CLANG_TURN_OFF(c++11-long-long)
CLANG_TURN_OFF(variadic-macros)
CLANG_TURN_OFF(c99-extensions)
#endif
#endif // clang
// ANSI build hasn't been updated to work without implicit wxString encoding
// and never will be, as it will be removed soon anyhow. And in UTF-8-only
// build we actually want to use implicit encoding (UTF-8).