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| author | Lukas Larsson <[email protected]> | 2018-11-28 11:04:03 +0100 |
|---|---|---|
| committer | Lukas Larsson <[email protected]> | 2018-12-03 14:41:13 +0100 |
| commit | cc21219185d7ff90b5d3d09cae896082d7627ea9 (patch) | |
| tree | 594e7cb32a2ea3627a8cad5d75374fff056316d9 | |
| parent | 892409dd4a517f2a6d75db13384c468519df899f (diff) | |
| download | otp-cc21219185d7ff90b5d3d09cae896082d7627ea9.tar.gz otp-cc21219185d7ff90b5d3d09cae896082d7627ea9.tar.bz2 otp-cc21219185d7ff90b5d3d09cae896082d7627ea9.zip | |
erts: Add check that a -O flag is present in CFLAGS
There have been too many times when users have needed to
enable something through CFLAGS but forgotten to add the
'-O2 -g' flags.
| -rw-r--r-- | erts/configure.in | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/erts/configure.in b/erts/configure.in index 4a27b532de..1074aab2c2 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -589,6 +589,17 @@ else WFLAGS="" WERRORFLAGS="" fi + +AC_MSG_CHECKING([CFLAGS for -O switch]) +case "$CFLAGS" in + *-O*) AC_MSG_RESULT([yes]) ;; + *) + AC_MSG_ERROR([ + CFLAGS must contain a -O flag. If you need to edit the CFLAGS you probably + also want to add the default CFLAGS. The default CFLAGS are "-O2 -g". + If you want to build erts without any optimization, pass -O0 to CFLAGS.]) ;; +esac + dnl DEBUG_FLAGS is obsolete (I hope) AC_SUBST(DEBUG_FLAGS) AC_SUBST(DEBUG_CFLAGS) |