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[misc] enable ASLR for MinGW builds

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* ASLR is enabled by default for Visual Studio builds but that isn't the case
  for MinGW builds. Fix that and also add -Wformat-security while we're at it.
* Closes #1518
* Also ensure that we'll never write protective MBR message for non-bootable
  GPT drives, even as we are not calling WriteSBR() for those anyway.
This commit is contained in:
Pete Batard 2020-04-23 16:48:37 +01:00
parent 0085c4a464
commit 44a8e08bc6
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GPG key ID: 38E0CF5E69EDD671
5 changed files with 13 additions and 11 deletions
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5
configure.ac
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@ -19,7 +19,8 @@ AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions])
AM_CFLAGS="${AM_CFLAGS} -DWINVER=0x601 -D_WIN32_WINNT=0x601 -D_WIN32_IE=0x800"
# "-Wl,--nxcompat" to enable DEP (Data Execution Prevention)
AM_LDFLAGS="${AM_LDFLAGS} -Wl,-no-undefined -Wl,--nxcompat -Wl,--no-insert-timestamp"
# "-Wl,--dynamicbase" to enable ASLR (Address Space Layout Randomization)
AM_LDFLAGS="${AM_LDFLAGS} -Wl,-no-undefined -Wl,--nxcompat -Wl,--no-insert-timestamp -Wl,--dynamicbase"
# Debug symbols
AC_ARG_ENABLE([debug],
@ -62,7 +63,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[nopointersign_cflags="-Wno-pointer-sign"], [nopointersign_cflags=""])
CFLAGS="${saved_CFLAGS}"
AM_CFLAGS="$AM_CFLAGS -DUNICODE -D_UNICODE -UNDEBUG -DCOBJMACROS -std=gnu99 -Wshadow -Wall -Wundef -Wunused -Wstrict-prototypes -Wno-restrict -Werror-implicit-function-declaration $nopointersign_cflags"
AM_CFLAGS="$AM_CFLAGS -DUNICODE -D_UNICODE -UNDEBUG -DCOBJMACROS -std=gnu99 -Wshadow -Wall -Wformat-security -Wundef -Wunused -Wstrict-prototypes -Wno-restrict -Werror-implicit-function-declaration $nopointersign_cflags"
AC_SUBST([VISIBILITY_CFLAGS])
AC_SUBST([AM_CFLAGS])