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| author | Eric Gallager <egall@gwmail.gwu.edu> | 2018-02-12 01:42:47 -0500 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2018-04-07 11:18:58 +0200 |
| commit | a19fefb0706f939d2df7a76704ee549fecb1c4fd (patch) | |
| tree | 46ffddbc152bbf3753e132af5997df91b146ba3c /m4 | |
| parent | 4e884615d1702914c1ec4c182f94eb9b8efc7a16 (diff) | |
build: add picky compiler warning flags for gcc 6 and 7
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/curl-compilers.m4 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4 index 422946e26..20bdbd706 100644 --- a/m4/curl-compilers.m4 +++ b/m4/curl-compilers.m4 @@ -1044,6 +1044,23 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [ tmp_CFLAGS="$tmp_CFLAGS -Wdouble-promotion" fi # + dnl Only gcc 6 or later + if test "$compiler_num" -ge "600"; then + tmp_CFLAGS="$tmp_CFLAGS -Wshift-negative-value" + tmp_CFLAGS="$tmp_CFLAGS -Wshift-overflow=2" + tmp_CFLAGS="$tmp_CFLAGS -Wnull-dereference" + tmp_CFLAGS="$tmp_CFLAGS -Wduplicated-cond" + fi + # + dnl Only gcc 7 or later + if test "$compiler_num" -ge "700"; then + tmp_CFLAGS="$tmp_CFLAGS -Wduplicated-branches" + tmp_CFLAGS="$tmp_CFLAGS -Wrestrict" + tmp_CFLAGS="$tmp_CFLAGS -Walloc-zero" + tmp_CFLAGS="$tmp_CFLAGS -Wformat-overflow=2" + tmp_CFLAGS="$tmp_CFLAGS -Wformat-truncation=2" + fi + # fi # dnl Do not issue warnings for code in system include paths. |