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build: detect ICC, only try ICC options if ICC

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Some ICC command-line options can cause confusion for other
compilers; test for ICC specifically, and only try to use those
options if ICC is being used.

Signed-off-by: Mark Stapp <mjs@voltanet.io>
This commit is contained in:
Mark Stapp 2021-02-15 13:59:02 -05:00
parent 54c7adbf49
commit 4e90d19ea3
1 changed files with 11 additions and 2 deletions
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13
configure.ac
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@ -191,6 +191,11 @@ CXXFLAGS="$orig_cxxflags"
AC_PROG_CC_C99
dnl NB: see C11 below
dnl Some special handling for ICC later on
if test "$CC" = "icc"; then
cc_is_icc="yes"
fi
PKG_PROG_PKG_CONFIG
dnl it's 2019, sed is sed.
@ -252,7 +257,9 @@ AC_DEFUN([AC_LINK_IFELSE_FLAGS], [{
dnl ICC won't bail on unknown options without -diag-error 10006
dnl need to do this first so we get useful results for the other options
AC_C_FLAG([-diag-error 10006])
if test "$cc_is_icc" = "yes"; then
AC_C_FLAG([-diag-error 10006])
fi
dnl AC_PROG_CC_C99 may change CC to include -std=gnu99 or something
ac_cc="$CC"
@ -335,7 +342,9 @@ AC_SUBST([CXX_COMPAT_CFLAGS])
dnl ICC emits a broken warning for const char *x = a ? "b" : "c";
dnl for some reason the string consts get 'promoted' to char *,
dnl triggering a const to non-const conversion warning.
AC_C_FLAG([-diag-disable 3179])
if test "$cc_is_icc" = "yes"; then
AC_C_FLAG([-diag-disable 3179])
fi
if test "$enable_werror" = "yes" ; then
WERROR="-Werror"